/* * Copyright 2003 Phil Mellor * Copyright 2006 James Bursa * Copyright 2004 Andrew Timmins * Copyright 2004 John Tytgat * Copyright 2006 Richard Wilson * Copyright 2008 Michael Drake * Copyright 2009 Paul Blokus * * This file is part of NetSurf, http://www.netsurf-browser.org/ * * NetSurf is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * NetSurf is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ /** * \file * * Browser window creation and manipulation implementation. */ #include "utils/config.h" #include #include #include #include #include #include #include #include #include "utils/corestrings.h" #include "utils/log.h" #include "utils/messages.h" #include "utils/nsurl.h" #include "utils/utils.h" #include "utils/utf8.h" #include "utils/nsoption.h" #include "content/content.h" #include "content/fetch.h" #include "content/hlcache.h" #include "content/urldb.h" #include "render/form.h" #include "render/html.h" #include "render/box.h" #include "curl/curl.h" #include "css/utils.h" #include "javascript/js.h" #include "desktop/browser_history.h" #include "desktop/browser_private.h" #include "desktop/download.h" #include "desktop/frames.h" #include "desktop/global_history.h" #include "desktop/hotlist.h" #include "desktop/knockout.h" #include "desktop/scrollbar.h" #include "desktop/selection.h" #include "desktop/plotters.h" #include "desktop/gui_misc.h" #include "desktop/gui_window.h" #include "desktop/gui_internal.h" /** maximum frame depth */ #define FRAME_DEPTH 8 /** * Get position of scrollbar widget within browser window. * * \param bw The browser window * \param horizontal Whether to get position of horizontal scrollbar * \param x Updated to x-coord of top left of scrollbar widget * \param y Updated to y-coord of top left of scrollbar widget */ static inline void browser_window_get_scrollbar_pos(struct browser_window *bw, bool horizontal, int *x, int *y) { if (horizontal) { *x = 0; *y = bw->height - SCROLLBAR_WIDTH; } else { *x = bw->width - SCROLLBAR_WIDTH; *y = 0; } } /** * Get browser window scrollbar widget length * * \param bw The browser window * \param horizontal Whether to get length of horizontal scrollbar * \return the scrollbar's length */ static inline int browser_window_get_scrollbar_len(struct browser_window *bw, bool horizontal) { if (horizontal) return bw->width - (bw->scroll_y != NULL ? SCROLLBAR_WIDTH : 0); else return bw->height; } /* exported interface, documented in browser.h */ bool browser_window_redraw(struct browser_window *bw, int x, int y, const struct rect *clip, const struct redraw_context *ctx) { struct redraw_context new_ctx = *ctx; int width = 0; int height = 0; bool plot_ok = true; content_type content_type; struct content_redraw_data data; struct rect content_clip; if (bw == NULL) { LOG(("NULL browser window")); return false; } if (bw->current_content == NULL && bw->children == NULL) { /* Browser window has no content, render blank fill */ ctx->plot->clip(clip); return ctx->plot->rectangle(clip->x0, clip->y0, clip->x1, clip->y1, plot_style_fill_white); } /* Browser window has content OR children (frames) */ if ((bw->window != NULL) && (ctx->plot->option_knockout)) { /* Root browser window: start knockout */ knockout_plot_start(ctx, &new_ctx); } new_ctx.plot->clip(clip); /* Handle redraw of any browser window children */ if (bw->children) { struct browser_window *child; int cur_child; int children = bw->rows * bw->cols; if (bw->window != NULL) /* Root browser window; start with blank fill */ plot_ok &= new_ctx.plot->rectangle(clip->x0, clip->y0, clip->x1, clip->y1, plot_style_fill_white); /* Loop through all children of bw */ for (cur_child = 0; cur_child < children; cur_child++) { /* Set current child */ child = &bw->children[cur_child]; /* Get frame edge box in global coordinates */ content_clip.x0 = (x + child->x) * child->scale; content_clip.y0 = (y + child->y) * child->scale; content_clip.x1 = content_clip.x0 + child->width * child->scale; content_clip.y1 = content_clip.y0 + child->height * child->scale; /* Intersect it with clip rectangle */ if (content_clip.x0 < clip->x0) content_clip.x0 = clip->x0; if (content_clip.y0 < clip->y0) content_clip.y0 = clip->y0; if (clip->x1 < content_clip.x1) content_clip.x1 = clip->x1; if (clip->y1 < content_clip.y1) content_clip.y1 = clip->y1; /* Skip this frame if it lies outside clip rectangle */ if (content_clip.x0 >= content_clip.x1 || content_clip.y0 >= content_clip.y1) continue; /* Redraw frame */ plot_ok &= browser_window_redraw(child, x + child->x, y + child->y, &content_clip, &new_ctx); } /* Nothing else to redraw for browser windows with children; * cleanup and return */ if (bw->window != NULL && ctx->plot->option_knockout) { /* Root browser window: knockout end */ knockout_plot_end(); } return plot_ok; } /* Handle browser windows with content to redraw */ content_type = content_get_type(bw->current_content); if (content_type != CONTENT_HTML && content_type != CONTENT_TEXTPLAIN) { /* Set render area according to scale */ width = content_get_width(bw->current_content) * bw->scale; height = content_get_height(bw->current_content) * bw->scale; /* Non-HTML may not fill viewport to extents, so plot white * background fill */ plot_ok &= new_ctx.plot->rectangle(clip->x0, clip->y0, clip->x1, clip->y1, plot_style_fill_white); } /* Set up content redraw data */ data.x = x - scrollbar_get_offset(bw->scroll_x); data.y = y - scrollbar_get_offset(bw->scroll_y); data.width = width; data.height = height; data.background_colour = 0xFFFFFF; data.scale = bw->scale; data.repeat_x = false; data.repeat_y = false; content_clip = *clip; if (!bw->window) { int x0 = x * bw->scale; int y0 = y * bw->scale; int x1 = (x + bw->width - ((bw->scroll_y != NULL) ? SCROLLBAR_WIDTH : 0)) * bw->scale; int y1 = (y + bw->height - ((bw->scroll_x != NULL) ? SCROLLBAR_WIDTH : 0)) * bw->scale; if (content_clip.x0 < x0) content_clip.x0 = x0; if (content_clip.y0 < y0) content_clip.y0 = y0; if (x1 < content_clip.x1) content_clip.x1 = x1; if (y1 < content_clip.y1) content_clip.y1 = y1; } /* Render the content */ plot_ok &= content_redraw(bw->current_content, &data, &content_clip, &new_ctx); /* Back to full clip rect */ new_ctx.plot->clip(clip); if (!bw->window) { /* Render scrollbars */ int off_x, off_y; if (bw->scroll_x != NULL) { browser_window_get_scrollbar_pos(bw, true, &off_x, &off_y); plot_ok &= scrollbar_redraw(bw->scroll_x, x + off_x, y + off_y, clip, bw->scale, &new_ctx); } if (bw->scroll_y != NULL) { browser_window_get_scrollbar_pos(bw, false, &off_x, &off_y); plot_ok &= scrollbar_redraw(bw->scroll_y, x + off_x, y + off_y, clip, bw->scale, &new_ctx); } } if (bw->window != NULL && ctx->plot->option_knockout) { /* Root browser window: end knockout */ knockout_plot_end(); } return plot_ok; } /* exported interface, documented in browser.h */ bool browser_window_redraw_ready(struct browser_window *bw) { if (bw == NULL) { LOG(("NULL browser window")); return false; } else if (bw->current_content != NULL) { /* Can't render locked contents */ return !content_is_locked(bw->current_content); } return true; } /* exported interface, documented in browser_private.h */ void browser_window_update_extent(struct browser_window *bw) { if (bw->window != NULL) /* Front end window */ guit->window->update_extent(bw->window); else /* Core-managed browser window */ browser_window_handle_scrollbars(bw); } /* exported interface, documented in browser.h */ void browser_window_get_position(struct browser_window *bw, bool root, int *pos_x, int *pos_y) { *pos_x = 0; *pos_y = 0; assert(bw != NULL); while (bw) { switch (bw->browser_window_type) { case BROWSER_WINDOW_FRAMESET: *pos_x += bw->x * bw->scale; *pos_y += bw->y * bw->scale; break; case BROWSER_WINDOW_NORMAL: /* There is no offset to the root browser window */ break; case BROWSER_WINDOW_FRAME: /* Iframe and Frame handling is identical; * fall though */ case BROWSER_WINDOW_IFRAME: *pos_x += (bw->x - scrollbar_get_offset(bw->scroll_x)) * bw->scale; *pos_y += (bw->y - scrollbar_get_offset(bw->scroll_y)) * bw->scale; break; } bw = bw->parent; if (!root) { /* return if we just wanted the position in the parent * browser window. */ return; } } } /* exported interface, documented in browser.h */ void browser_window_set_position(struct browser_window *bw, int x, int y) { assert(bw != NULL); if (bw->window == NULL) { /* Core managed browser window */ bw->x = x; bw->y = y; } else { LOG(("Asked to set position of front end window.")); assert(0); } } /* exported interface, documented in browser.h */ void browser_window_set_drag_type(struct browser_window *bw, browser_drag_type type, const struct rect *rect) { struct browser_window *top_bw = browser_window_get_root(bw); gui_drag_type gtype; bw->drag_type = type; if (type == DRAGGING_NONE) { top_bw->drag_window = NULL; } else { top_bw->drag_window = bw; switch (type) { case DRAGGING_SELECTION: /* TODO: tell front end */ return; case DRAGGING_SCR_X: case DRAGGING_SCR_Y: case DRAGGING_CONTENT_SCROLLBAR: gtype = GDRAGGING_SCROLLBAR; break; default: gtype = GDRAGGING_OTHER; break; } guit->window->drag_start(top_bw->window, gtype, rect); } } /* exported interface, documented in browser.h */ browser_drag_type browser_window_get_drag_type(struct browser_window *bw) { return bw->drag_type; } /* exported interface, documented in browser.h */ struct browser_window * browser_window_get_root(struct browser_window *bw) { while (bw && bw->parent) { bw = bw->parent; } return bw; } /* exported interface, documented in browser.h */ browser_editor_flags browser_window_get_editor_flags(struct browser_window *bw) { browser_editor_flags ed_flags = BW_EDITOR_NONE; assert(bw->window); assert(bw->parent == NULL); if (bw->selection.bw != NULL) { ed_flags |= BW_EDITOR_CAN_COPY; if (!bw->selection.read_only) ed_flags |= BW_EDITOR_CAN_CUT; } if (bw->can_edit) ed_flags |= BW_EDITOR_CAN_PASTE; return ed_flags; } /* exported interface, documented in browser.h */ char * browser_window_get_selection(struct browser_window *bw) { assert(bw->window); assert(bw->parent == NULL); if (bw->selection.bw == NULL || bw->selection.bw->current_content == NULL) return NULL; return content_get_selection(bw->selection.bw->current_content); } /** * Set or remove a selection. * * \param bw browser window with selection * \param selection true if bw has a selection, false if removing selection * \param read_only true iff selection is read only (e.g. can't cut it) */ static void browser_window_set_selection(struct browser_window *bw, bool selection, bool read_only) { struct browser_window *top; assert(bw != NULL); top = browser_window_get_root(bw); assert(top != NULL); if (bw != top->selection.bw && top->selection.bw != NULL && top->selection.bw->current_content != NULL) { /* clear old selection */ content_clear_selection(top->selection.bw->current_content); } if (selection) { top->selection.bw = bw; } else { top->selection.bw = NULL; } top->selection.read_only = read_only; } /* exported interface, documented in browser.h */ void browser_window_scroll_visible(struct browser_window *bw, const struct rect *rect) { assert(bw != NULL); if (bw->window != NULL) { /* Front end window */ guit->window->scroll_visible(bw->window, rect->x0, rect->y0, rect->x1, rect->y1); } else { /* Core managed browser window */ if (bw->scroll_x != NULL) scrollbar_set(bw->scroll_x, rect->x0, false); if (bw->scroll_y != NULL) scrollbar_set(bw->scroll_y, rect->y0, false); } } /* exported interface, documented in browser.h */ void browser_window_set_scroll(struct browser_window *bw, int x, int y) { if (bw->window != NULL) { guit->window->set_scroll(bw->window, x, y); } else { if (bw->scroll_x != NULL) scrollbar_set(bw->scroll_x, x, false); if (bw->scroll_y != NULL) scrollbar_set(bw->scroll_y, y, false); } } /** * Internal helper for browser_window_get_contextual_content */ static void browser_window__get_contextual_content(struct browser_window *bw, int x, int y, struct contextual_content *data) { /* Handle (i)frame scroll offset (core-managed browser windows only) */ x += scrollbar_get_offset(bw->scroll_x); y += scrollbar_get_offset(bw->scroll_y); if (bw->children) { /* Browser window has children, so pass request on to * appropriate child */ struct browser_window *bwc; int cur_child; int children = bw->rows * bw->cols; /* Loop through all children of bw */ for (cur_child = 0; cur_child < children; cur_child++) { /* Set current child */ bwc = &bw->children[cur_child]; /* Skip this frame if (x, y) coord lies outside */ if (x < bwc->x || bwc->x + bwc->width < x || y < bwc->y || bwc->y + bwc->height < y) continue; /* Pass request into this child */ browser_window__get_contextual_content(bwc, (x - bwc->x), (y - bwc->y), data); return; } /* Coordinate not contained by any frame */ return; } if (bw->current_content == NULL) /* No content; nothing to set */ return; /* Pass request to content */ content_get_contextual_content(bw->current_content, x, y, data); data->main = bw->current_content; } /* exported interface, documented in browser.h */ void browser_window_get_contextual_content(struct browser_window *bw, int x, int y, struct contextual_content *data) { data->link_url = NULL; data->object = NULL; data->main = NULL; data->form_features = CTX_FORM_NONE; browser_window__get_contextual_content(bw, x, y, data); } /* exported interface, documented in browser.h */ bool browser_window_scroll_at_point(struct browser_window *bw, int x, int y, int scrx, int scry) { bool handled_scroll = false; assert(bw != NULL); /* Handle (i)frame scroll offset (core-managed browser windows only) */ x += scrollbar_get_offset(bw->scroll_x); y += scrollbar_get_offset(bw->scroll_y); if (bw->children) { /* Browser window has children, so pass request on to * appropriate child */ struct browser_window *bwc; int cur_child; int children = bw->rows * bw->cols; /* Loop through all children of bw */ for (cur_child = 0; cur_child < children; cur_child++) { /* Set current child */ bwc = &bw->children[cur_child]; /* Skip this frame if (x, y) coord lies outside */ if (x < bwc->x || bwc->x + bwc->width < x || y < bwc->y || bwc->y + bwc->height < y) continue; /* Pass request into this child */ return browser_window_scroll_at_point(bwc, (x - bwc->x), (y - bwc->y), scrx, scry); } } /* Try to scroll any current content */ if (bw->current_content != NULL && content_scroll_at_point( bw->current_content, x, y, scrx, scry) == true) /* Scroll handled by current content */ return true; /* Try to scroll this window, if scroll not already handled */ if (handled_scroll == false) { if (bw->scroll_y && scrollbar_scroll(bw->scroll_y, scry)) handled_scroll = true; if (bw->scroll_x && scrollbar_scroll(bw->scroll_x, scrx)) handled_scroll = true; } return handled_scroll; } /* exported interface, documented in browser.h */ bool browser_window_drop_file_at_point(struct browser_window *bw, int x, int y, char *file) { assert(bw != NULL); /* Handle (i)frame scroll offset (core-managed browser windows only) */ x += scrollbar_get_offset(bw->scroll_x); y += scrollbar_get_offset(bw->scroll_y); if (bw->children) { /* Browser window has children, so pass request on to * appropriate child */ struct browser_window *bwc; int cur_child; int children = bw->rows * bw->cols; /* Loop through all children of bw */ for (cur_child = 0; cur_child < children; cur_child++) { /* Set current child */ bwc = &bw->children[cur_child]; /* Skip this frame if (x, y) coord lies outside */ if (x < bwc->x || bwc->x + bwc->width < x || y < bwc->y || bwc->y + bwc->height < y) continue; /* Pass request into this child */ return browser_window_drop_file_at_point(bwc, (x - bwc->x), (y - bwc->y), file); } } /* Pass file drop on to any content */ if (bw->current_content != NULL) return content_drop_file_at_point(bw->current_content, x, y, file); return false; } void browser_window_set_gadget_filename(struct browser_window *bw, struct form_control *gadget, const char *fn) { html_set_file_gadget_filename(bw->current_content, gadget, fn); } /* exported interface, documented in browser.h */ nserror browser_window_debug_dump(struct browser_window *bw, FILE *f, enum content_debug op) { if (bw->current_content == NULL) { return NSERROR_OK; } return content_debug_dump(bw->current_content, f, op); } /** slow script handler */ static bool slow_script(void *ctx) { static int count = 0; LOG(("Continuing execution %d", count)); count++; if (count > 1) { count = 0; return false; } return true; } /* exported interface, documented in desktop/browser.h */ nserror browser_window_create(enum browser_window_create_flags flags, nsurl *url, nsurl *referrer, struct browser_window *existing, struct browser_window **bw) { gui_window_create_flags gw_flags = GW_CREATE_NONE; struct browser_window *ret; /* Check parameters */ if (flags & BW_CREATE_CLONE) { if (existing == NULL) { assert(0 && "Failed: No existing window provided."); return NSERROR_BAD_PARAMETER; } } if (!(flags & BW_CREATE_HISTORY)) { if (!(flags & BW_CREATE_CLONE) || existing == NULL) { assert(0 && "Failed: Must have existing for history."); return NSERROR_BAD_PARAMETER; } } if ((ret = calloc(1, sizeof(struct browser_window))) == NULL) { warn_user("NoMemory", 0); return NSERROR_NOMEM; } /* new javascript context for window */ ret->jsctx = js_newcontext(nsoption_int(script_timeout), slow_script, NULL); /* Initialise common parts */ browser_window_initialise_common(flags, ret, existing); /* window characteristics */ ret->browser_window_type = BROWSER_WINDOW_NORMAL; ret->scrolling = SCROLLING_YES; ret->border = true; ret->no_resize = true; ret->last_action = wallclock(); ret->focus = ret; /* The existing gui_window is on the top-level existing * browser_window. */ existing = browser_window_get_root(existing); /* Set up gui_window creation flags */ if (flags & BW_CREATE_TAB) gw_flags |= GW_CREATE_TAB; if (flags & BW_CREATE_CLONE) gw_flags |= GW_CREATE_CLONE; ret->window = guit->window->create(ret, (existing != NULL) ? existing->window : NULL, gw_flags); if (ret->window == NULL) { browser_window_destroy(ret); return NSERROR_BAD_PARAMETER; } if (url != NULL) { enum browser_window_nav_flags nav_flags = BW_NAVIGATE_NONE; if (flags & BW_CREATE_UNVERIFIABLE) nav_flags |= BW_NAVIGATE_UNVERIFIABLE; if (flags & BW_CREATE_HISTORY) nav_flags |= BW_NAVIGATE_HISTORY; browser_window_navigate(ret, url, referrer, nav_flags, NULL, NULL, NULL); } if (bw != NULL) { *bw = ret; } return NSERROR_OK; } /** * Initialise common parts of a browser window * * \param flags Flags to control operation * \param bw The window to initialise * \param existing The existing window if cloning, else NULL */ nserror browser_window_initialise_common(enum browser_window_create_flags flags, struct browser_window *bw, struct browser_window *existing) { nserror err; assert(bw); if (flags & BW_CREATE_CLONE) { assert(existing != NULL); /* clone history */ err = browser_window_history_clone(existing, bw); /* copy the scale */ bw->scale = existing->scale; } else { /* create history */ err = browser_window_history_create(bw); /* default scale */ bw->scale = (float) nsoption_int(scale) / 100.0; } if (err != NSERROR_OK) return err; /* window characteristics */ bw->refresh_interval = -1; bw->drag_type = DRAGGING_NONE; bw->scroll_x = NULL; bw->scroll_y = NULL; bw->focus = NULL; /* initialise status text cache */ bw->status_text = NULL; bw->status_text_len = 0; bw->status_match = 0; bw->status_miss = 0; return NSERROR_OK; } /** * implements the download operation of a window navigate */ static nserror browser_window_download(struct browser_window *bw, nsurl *url, nsurl *nsref, uint32_t fetch_flags, bool fetch_is_post, llcache_post_data *post) { llcache_handle *l; struct browser_window *root; nserror error; root = browser_window_get_root(bw); assert(root != NULL); fetch_flags |= LLCACHE_RETRIEVE_FORCE_FETCH; fetch_flags |= LLCACHE_RETRIEVE_STREAM_DATA; error = llcache_handle_retrieve(url, fetch_flags, nsref, fetch_is_post ? post : NULL, NULL, NULL, &l); if (error == NSERROR_NO_FETCH_HANDLER) { /* no internal handler for this type, call out to frontend */ error = guit->browser->launch_url(url); } else if (error != NSERROR_OK) { LOG(("Failed to fetch download: %d", error)); } else { error = download_context_create(l, root->window); if (error != NSERROR_OK) { LOG(("Failed creating download context: %d", error)); llcache_handle_abort(l); llcache_handle_release(l); } } return error; } static bool browser_window_check_throbber(struct browser_window *bw) { int children, index; if (bw->throbbing) return true; if (bw->children) { children = bw->rows * bw->cols; for (index = 0; index < children; index++) { if (browser_window_check_throbber(&bw->children[index])) return true; } } if (bw->iframes) { for (index = 0; index < bw->iframe_count; index++) { if (browser_window_check_throbber(&bw->iframes[index])) return true; } } return false; } /** * Start the busy indicator. * * \param bw browser window */ static void browser_window_start_throbber(struct browser_window *bw) { bw->throbbing = true; while (bw->parent) bw = bw->parent; guit->window->start_throbber(bw->window); } /** * Stop the busy indicator. * * \param bw browser window */ static void browser_window_stop_throbber(struct browser_window *bw) { bw->throbbing = false; while (bw->parent) bw = bw->parent; if (!browser_window_check_throbber(bw)) { guit->window->stop_throbber(bw->window); } } /** * Callback for fetchcache() for browser window favicon fetches. */ static nserror browser_window_favicon_callback(hlcache_handle *c, const hlcache_event *event, void *pw) { struct browser_window *bw = pw; switch (event->type) { case CONTENT_MSG_DONE: if (bw->current_favicon != NULL) { content_status status = content_get_status(bw->current_favicon); if ((status == CONTENT_STATUS_READY) || (status == CONTENT_STATUS_DONE)) content_close(bw->current_favicon); hlcache_handle_release(bw->current_favicon); } bw->current_favicon = c; bw->loading_favicon = NULL; /* content_get_bitmap on the hlcache_handle should give * us the favicon bitmap at this point */ guit->window->set_icon(bw->window, c); break; case CONTENT_MSG_ERROR: /* clean up after ourselves */ if (c == bw->loading_favicon) bw->loading_favicon = NULL; else if (c == bw->current_favicon) { bw->current_favicon = NULL; } hlcache_handle_release(c); if (bw->failed_favicon == false) { nsurl *nsref = NULL; nsurl *nsurl; nserror error; bw->failed_favicon = true; error = nsurl_create("resource:favicon.ico", &nsurl); if (error != NSERROR_OK) { LOG(("Unable to create default location url")); } else { hlcache_handle_retrieve(nsurl, HLCACHE_RETRIEVE_SNIFF_TYPE, nsref, NULL, browser_window_favicon_callback, bw, NULL, CONTENT_IMAGE, &bw->loading_favicon); nsurl_unref(nsurl); } } break; default: break; } return NSERROR_OK; } static void browser_window_update_favicon(hlcache_handle *c, struct browser_window *bw, struct content_rfc5988_link *link) { nsurl *nsref = NULL; nsurl *nsurl; nserror error; assert(c != NULL); assert(bw !=NULL); if (bw->window == NULL) /* Not top-level browser window; not interested */ return; /* already fetching the favicon - use that */ if (bw->loading_favicon != NULL) return; bw->failed_favicon = false; if (link == NULL) { /* Look for "icon" */ link = content_find_rfc5988_link(c, corestring_lwc_icon); } if (link == NULL) { /* Look for "shortcut icon" */ link = content_find_rfc5988_link(c, corestring_lwc_shortcut_icon); } if (link == NULL) { lwc_string *scheme; bool speculative_default = false; bool match; nsurl = hlcache_handle_get_url(c); scheme = nsurl_get_component(nsurl, NSURL_SCHEME); /* If the document was fetched over http(s), then speculate * that there's a favicon living at /favicon.ico */ if ((lwc_string_caseless_isequal(scheme, corestring_lwc_http, &match) == lwc_error_ok && match) || (lwc_string_caseless_isequal(scheme, corestring_lwc_https, &match) == lwc_error_ok && match)) { speculative_default = true; } lwc_string_unref(scheme); if (speculative_default) { /* no favicon via link, try for the default location */ error = nsurl_join(nsurl, "/favicon.ico", &nsurl); } else { bw->failed_favicon = true; error = nsurl_create("resource:favicon.ico", &nsurl); } if (error != NSERROR_OK) { LOG(("Unable to create default location url")); return; } } else { nsurl = nsurl_ref(link->href); } if (link == NULL) { LOG(("fetching general favicon from '%s'", nsurl_access(nsurl))); } else { LOG(("fetching favicon rel:%s '%s'", lwc_string_data(link->rel), nsurl_access(nsurl))); } hlcache_handle_retrieve(nsurl, HLCACHE_RETRIEVE_SNIFF_TYPE, nsref, NULL, browser_window_favicon_callback, bw, NULL, CONTENT_IMAGE, &bw->loading_favicon); nsurl_unref(nsurl); } /** window callback errorcode handling */ static void browser_window_callback_errorcode(hlcache_handle *c, struct browser_window *bw, nserror code) { const char* message; message = messages_get_errorcode(code); browser_window_set_status(bw, message); /* Only warn the user about errors in top-level windows */ if (bw->browser_window_type == BROWSER_WINDOW_NORMAL) { warn_user(message, 0); } if (c == bw->loading_content) { bw->loading_content = NULL; } else if (c == bw->current_content) { bw->current_content = NULL; browser_window_remove_caret(bw, false); } hlcache_handle_release(c); browser_window_stop_throbber(bw); } /** * Handle meta http-equiv refresh time elapsing by loading a new page. * * \param p browser window to refresh with new page */ static void browser_window_refresh(void *p) { struct browser_window *bw = p; nsurl *url; nsurl *refresh; hlcache_handle *parent = NULL; enum browser_window_nav_flags flags = BW_NAVIGATE_UNVERIFIABLE; assert(bw->current_content != NULL && (content_get_status(bw->current_content) == CONTENT_STATUS_READY || content_get_status(bw->current_content) == CONTENT_STATUS_DONE)); /* Ignore if the refresh URL has gone * (may happen if a fetch error occurred) */ refresh = content_get_refresh_url(bw->current_content); if (refresh == NULL) return; /* mark this content as invalid so it gets flushed from the cache */ content_invalidate_reuse_data(bw->current_content); url = hlcache_handle_get_url(bw->current_content); if ((url == NULL) || (nsurl_compare(url, refresh, NSURL_COMPLETE))) { flags |= BW_NAVIGATE_HISTORY; } /* Treat an (almost) immediate refresh in a top-level browser window as * if it were an HTTP redirect, and thus make the resulting fetch * verifiable. * * See fetchcache.c for why redirected fetches should be verifiable at * all. */ if (bw->refresh_interval <= 100 && bw->parent == NULL) { flags &= ~BW_NAVIGATE_UNVERIFIABLE; } else { parent = bw->current_content; } browser_window_navigate(bw, refresh, url, flags, NULL, NULL, parent); } /** * Transfer the loading_content to a new download window. */ static void browser_window_convert_to_download(struct browser_window *bw, llcache_handle *stream) { struct browser_window *root = browser_window_get_root(bw); nserror error; assert(root != NULL); error = download_context_create(stream, root->window); if (error != NSERROR_OK) { llcache_handle_abort(stream); llcache_handle_release(stream); } /* remove content from browser window */ hlcache_handle_release(bw->loading_content); bw->loading_content = NULL; browser_window_stop_throbber(bw); } /** * Callback handler for content event messages. */ static nserror browser_window_callback(hlcache_handle *c, const hlcache_event *event, void *pw) { struct browser_window *bw = pw; switch (event->type) { case CONTENT_MSG_DOWNLOAD: assert(bw->loading_content == c); browser_window_convert_to_download(bw, event->data.download); if (bw->current_content != NULL) { browser_window_refresh_url_bar(bw); } break; case CONTENT_MSG_LOADING: assert(bw->loading_content == c); #ifdef WITH_THEME_INSTALL if (content_get_type(c) == CONTENT_THEME) { theme_install_start(c); bw->loading_content = NULL; browser_window_stop_throbber(bw); } else #endif { bw->refresh_interval = -1; browser_window_set_status(bw, content_get_status_message(c)); } break; case CONTENT_MSG_READY: { int width, height; assert(bw->loading_content == c); if (bw->current_content != NULL) { content_status status = content_get_status(bw->current_content); if (status == CONTENT_STATUS_READY || status == CONTENT_STATUS_DONE) content_close(bw->current_content); hlcache_handle_release(bw->current_content); } bw->current_content = c; bw->loading_content = NULL; /* Format the new content to the correct dimensions */ browser_window_get_dimensions(bw, &width, &height, true); content_reformat(c, false, width, height); browser_window_remove_caret(bw, false); if (bw->window != NULL) { guit->window->new_content(bw->window); browser_window_refresh_url_bar(bw); } /* new content; set scroll_to_top */ browser_window_update(bw, true); content_open(c, bw, 0, 0); browser_window_set_status(bw, content_get_status_message(c)); /* history */ if (bw->history_add && bw->history) { nsurl *url = hlcache_handle_get_url(c); if (urldb_add_url(url)) { urldb_set_url_title(url, content_get_title(c)); urldb_update_url_visit_data(url); urldb_set_url_content_type(url, content_get_type(c)); /* This is safe as we've just added the URL */ global_history_add(urldb_get_url(url)); } /* TODO: Urldb / Thumbnails / Local history brokenness * * We add to local history after calling urldb_add_url * rather than in the block above. If urldb_add_url * fails (as it will for urls like "about:about", * "about:config" etc), there would be no local history * node, and later calls to history_update will either * explode or overwrite the node for the previous URL. * * We call it after, rather than before urldb_add_url * because history_add calls thumbnail_create, which * tries to register the thumbnail with urldb. That * thumbnail registration fails if the url doesn't * exist in urldb already, and only urldb-registered * thumbnails get freed. So if we called history_add * before urldb_add_url we would leak thumbnails for * all newly visited URLs. With the history_add call * after, we only leak the thumbnails when urldb does * not add the URL. */ browser_window_history_add(bw, c, bw->frag_id); } /* frames */ if (content_get_type(c) == CONTENT_HTML && html_get_frameset(c) != NULL) browser_window_create_frameset(bw, html_get_frameset(c)); if (content_get_type(c) == CONTENT_HTML && html_get_iframe(c) != NULL) browser_window_create_iframes(bw, html_get_iframe(c)); } break; case CONTENT_MSG_DONE: assert(bw->current_content == c); if (bw->window == NULL) { /* Updated browser window's scrollbars. * TODO: do this before CONTENT_MSG_DONE */ browser_window_reformat(bw, true, bw->width, bw->height); browser_window_handle_scrollbars(bw); } browser_window_update(bw, false); browser_window_set_status(bw, content_get_status_message(c)); browser_window_stop_throbber(bw); browser_window_update_favicon(c, bw, NULL); browser_window_history_update(bw, c); hotlist_update_url(hlcache_handle_get_url(c)); if (bw->refresh_interval != -1) { guit->browser->schedule(bw->refresh_interval * 10, browser_window_refresh, bw); } break; case CONTENT_MSG_ERRORCODE: browser_window_callback_errorcode(c, bw, event->data.errorcode); break; case CONTENT_MSG_ERROR: browser_window_set_status(bw, event->data.error); /* Only warn the user about errors in top-level windows */ if (bw->browser_window_type == BROWSER_WINDOW_NORMAL) warn_user(event->data.error, 0); if (c == bw->loading_content) bw->loading_content = NULL; else if (c == bw->current_content) { bw->current_content = NULL; browser_window_remove_caret(bw, false); } hlcache_handle_release(c); browser_window_stop_throbber(bw); break; case CONTENT_MSG_REDIRECT: if (urldb_add_url(event->data.redirect.from)) urldb_update_url_visit_data(event->data.redirect.from); break; case CONTENT_MSG_STATUS: if (event->data.explicit_status_text == NULL) { /* Object content's status text updated */ const char *status = NULL; if (bw->loading_content != NULL) /* Give preference to any loading content */ status = content_get_status_message( bw->loading_content); if (status == NULL) status = content_get_status_message(c); if (status != NULL) browser_window_set_status(bw, status); } else { /* Object content wants to set explicit message */ browser_window_set_status(bw, event->data.explicit_status_text); } break; case CONTENT_MSG_REFORMAT: if (c == bw->current_content && content_get_type(c) == CONTENT_HTML) { /* reposition frames */ if (html_get_frameset(c) != NULL) browser_window_recalculate_frameset(bw); /* reflow iframe positions */ if (html_get_iframe(c) != NULL) browser_window_recalculate_iframes(bw); } /* Hide any caret, but don't remove it */ browser_window_remove_caret(bw, true); if (!(event->data.background)) { /* Reformatted content should be redrawn */ browser_window_update(bw, false); } break; case CONTENT_MSG_REDRAW: { struct rect rect = { .x0 = event->data.redraw.x, .y0 = event->data.redraw.y, .x1 = event->data.redraw.x + event->data.redraw.width, .y1 = event->data.redraw.y + event->data.redraw.height }; browser_window_update_box(bw, &rect); } break; case CONTENT_MSG_REFRESH: bw->refresh_interval = event->data.delay * 100; break; case CONTENT_MSG_LINK: /* content has an rfc5988 link element */ { bool match; /* Handle "icon" and "shortcut icon" */ if ((lwc_string_caseless_isequal( event->data.rfc5988_link->rel, corestring_lwc_icon, &match) == lwc_error_ok && match) || (lwc_string_caseless_isequal( event->data.rfc5988_link->rel, corestring_lwc_shortcut_icon, &match) == lwc_error_ok && match)) { /* it's a favicon perhaps start a fetch for it */ browser_window_update_favicon(c, bw, event->data.rfc5988_link); } } break; case CONTENT_MSG_GETCTX: /* only the content object created by the browser * window requires a new global compartment object */ assert(bw->loading_content == c); if (js_newcompartment(bw->jsctx, bw, hlcache_handle_get_content(c)) != NULL) { *(event->data.jscontext) = bw->jsctx; } break; case CONTENT_MSG_SCROLL: /* Content wants to be scrolled */ if (bw->current_content != c) break; if (event->data.scroll.area) { struct rect rect = { .x0 = event->data.scroll.x0, .y0 = event->data.scroll.y0, .x1 = event->data.scroll.x1, .y1 = event->data.scroll.y1 }; browser_window_scroll_visible(bw, &rect); } else { browser_window_set_scroll(bw, event->data.scroll.x0, event->data.scroll.y0); } break; case CONTENT_MSG_DRAGSAVE: { /* Content wants drag save of a content */ struct browser_window *root = browser_window_get_root(bw); hlcache_handle *save = event->data.dragsave.content; if (save == NULL) { save = c; } switch(event->data.dragsave.type) { case CONTENT_SAVE_ORIG: guit->window->drag_save_object(root->window, save, GUI_SAVE_OBJECT_ORIG); break; case CONTENT_SAVE_NATIVE: guit->window->drag_save_object(root->window, save, GUI_SAVE_OBJECT_NATIVE); break; case CONTENT_SAVE_COMPLETE: guit->window->drag_save_object(root->window, save, GUI_SAVE_COMPLETE); break; case CONTENT_SAVE_SOURCE: guit->window->drag_save_object(root->window, save, GUI_SAVE_SOURCE); break; } } break; case CONTENT_MSG_SAVELINK: { /* Content wants a link to be saved */ struct browser_window *root = browser_window_get_root(bw); guit->window->save_link(root->window, event->data.savelink.url, event->data.savelink.title); } break; case CONTENT_MSG_POINTER: /* Content wants to have specific mouse pointer */ browser_window_set_pointer(bw, event->data.pointer); break; case CONTENT_MSG_DRAG: { browser_drag_type bdt = DRAGGING_NONE; switch (event->data.drag.type) { case CONTENT_DRAG_NONE: bdt = DRAGGING_NONE; break; case CONTENT_DRAG_SCROLL: bdt = DRAGGING_CONTENT_SCROLLBAR; break; case CONTENT_DRAG_SELECTION: bdt = DRAGGING_SELECTION; break; } browser_window_set_drag_type(bw, bdt, event->data.drag.rect); } break; case CONTENT_MSG_CARET: switch (event->data.caret.type) { case CONTENT_CARET_REMOVE: browser_window_remove_caret(bw, false); break; case CONTENT_CARET_HIDE: browser_window_remove_caret(bw, true); break; case CONTENT_CARET_SET_POS: browser_window_place_caret(bw, event->data.caret.pos.x, event->data.caret.pos.y, event->data.caret.pos.height, event->data.caret.pos.clip); break; } break; case CONTENT_MSG_SELECTION: browser_window_set_selection(bw, event->data.selection.selection, event->data.selection.read_only); break; case CONTENT_MSG_GADGETCLICK: if (event->data.gadget_click.gadget->type == GADGET_FILE) { guit->window->file_gadget_open(bw->window, c, event->data.gadget_click.gadget); } break; default: break; } return NSERROR_OK; } /* Have to forward declare browser_window_destroy_internal */ static void browser_window_destroy_internal(struct browser_window *bw); /** * Close and destroy all child browser window. * * \param bw browser window */ static void browser_window_destroy_children(struct browser_window *bw) { int i; if (bw->children) { for (i = 0; i < (bw->rows * bw->cols); i++) browser_window_destroy_internal(&bw->children[i]); free(bw->children); bw->children = NULL; bw->rows = 0; bw->cols = 0; } if (bw->iframes) { for (i = 0; i < bw->iframe_count; i++) browser_window_destroy_internal(&bw->iframes[i]); free(bw->iframes); bw->iframes = NULL; bw->iframe_count = 0; } } /** * Release all memory associated with a browser window. * * \param bw browser window */ void browser_window_destroy_internal(struct browser_window *bw) { assert(bw); LOG(("Destroying window")); if (bw->children != NULL || bw->iframes != NULL) { browser_window_destroy_children(bw); } /* clear any pending callbacks */ guit->browser->schedule(-1, browser_window_refresh, bw); /* The ugly cast here is so the reformat function can be * passed a gui window pointer in its API rather than void* */ LOG(("Clearing schedule %p(%p)", guit->window->reformat, bw->window)); guit->browser->schedule(-1, (void(*)(void*))guit->window->reformat, bw->window); /* If this brower window is not the root window, and has focus, unset * the root browser window's focus pointer. */ if (!bw->window) { struct browser_window *top = browser_window_get_root(bw); if (top->focus == bw) top->focus = top; if (top->selection.bw == bw) { browser_window_set_selection(top, false, false); } } /* Destruction order is important: we must ensure that the frontend * destroys any window(s) associated with this browser window before * we attempt any destructive cleanup. */ if (bw->window) { /* Only the root window has a GUI window */ guit->window->destroy(bw->window); } if (bw->loading_content != NULL) { hlcache_handle_abort(bw->loading_content); hlcache_handle_release(bw->loading_content); bw->loading_content = NULL; } if (bw->current_content != NULL) { content_status status = content_get_status(bw->current_content); if (status == CONTENT_STATUS_READY || status == CONTENT_STATUS_DONE) content_close(bw->current_content); hlcache_handle_release(bw->current_content); bw->current_content = NULL; } if (bw->loading_favicon != NULL) { hlcache_handle_abort(bw->loading_favicon); hlcache_handle_release(bw->loading_favicon); bw->loading_favicon = NULL; } if (bw->current_favicon != NULL) { content_status status = content_get_status(bw->current_favicon); if (status == CONTENT_STATUS_READY || status == CONTENT_STATUS_DONE) content_close(bw->current_favicon); hlcache_handle_release(bw->current_favicon); bw->current_favicon = NULL; } if (bw->box != NULL) { bw->box->iframe = NULL; bw->box = NULL; } if (bw->jsctx != NULL) { js_destroycontext(bw->jsctx); } /* These simply free memory, so are safe here */ if (bw->frag_id != NULL) lwc_string_unref(bw->frag_id); browser_window_history_destroy(bw); free(bw->name); free(bw->status_text); bw->status_text = NULL; LOG(("Status text cache match:miss %d:%d", bw->status_match, bw->status_miss)); } /** * Close and destroy a browser window. * * \param bw browser window */ void browser_window_destroy(struct browser_window *bw) { /* can't destoy child windows on their own */ assert(!bw->parent); /* destroy */ browser_window_destroy_internal(bw); free(bw); } /** * Update URL bar for a given browser window to given URL * * \param bw Browser window to update URL bar for. * \param url URL for content displayed by bw including any fragment. */ static inline void browser_window_refresh_url_bar_internal( struct browser_window *bw, nsurl *url) { assert(bw); assert(url); if (bw->parent != NULL) { /* Not root window; don't set a URL in GUI URL bar */ return; } guit->window->set_url(bw->window, nsurl_access(url)); } /** * Update URL bar for a given browser window to bw's content's URL * * \param bw Browser window to update URL bar for. */ void browser_window_refresh_url_bar(struct browser_window *bw) { assert(bw); if (bw->parent != NULL) { /* Not root window; don't set a URL in GUI URL bar */ return; } if (bw->current_content == NULL) { /* TODO: set "about:blank"? */ return; } if (bw->frag_id == NULL) { browser_window_refresh_url_bar_internal(bw, hlcache_handle_get_url(bw->current_content)); } else { nsurl *display_url; nserror error; /* Combine URL and Fragment */ error = nsurl_refragment( hlcache_handle_get_url(bw->current_content), bw->frag_id, &display_url); if (error != NSERROR_OK) { warn_user("NoMemory", 0); return; } browser_window_refresh_url_bar_internal(bw, display_url); nsurl_unref(display_url); } } /* exported interface documented in desktop/browser.h */ nserror browser_window_navigate(struct browser_window *bw, nsurl *url, nsurl *referrer, enum browser_window_nav_flags flags, char *post_urlenc, struct fetch_multipart_data *post_multipart, hlcache_handle *parent) { hlcache_handle *c; int depth = 0; struct browser_window *cur; uint32_t fetch_flags = 0; bool fetch_is_post = (post_urlenc != NULL || post_multipart != NULL); llcache_post_data post; hlcache_child_context child; nserror error; assert(bw); assert(url); LOG(("bw %p, url %s", bw, nsurl_access(url))); /* don't allow massively nested framesets */ for (cur = bw; cur->parent; cur = cur->parent) { depth++; } if (depth > FRAME_DEPTH) { LOG(("frame depth too high.")); return NSERROR_FRAME_DEPTH; } /* Set up retrieval parameters */ if (!(flags & BW_NAVIGATE_UNVERIFIABLE)) { fetch_flags |= LLCACHE_RETRIEVE_VERIFIABLE; } if (post_multipart != NULL) { post.type = LLCACHE_POST_MULTIPART; post.data.multipart = post_multipart; } else if (post_urlenc != NULL) { post.type = LLCACHE_POST_URL_ENCODED; post.data.urlenc = post_urlenc; } if ((parent != NULL) && (content_get_type(parent) == CONTENT_HTML)) { child.charset = html_get_encoding(parent); child.quirks = content_get_quirks(parent); } url = nsurl_ref(url); if (referrer != NULL) { referrer = nsurl_ref(referrer); } /* Get download out of the way */ if ((flags & BW_NAVIGATE_DOWNLOAD) != 0) { error = browser_window_download(bw, url, referrer, fetch_flags, fetch_is_post, &post); nsurl_unref(url); if (referrer != NULL) { nsurl_unref(referrer); } return error; } if (bw->frag_id != NULL) { lwc_string_unref(bw->frag_id); } bw->frag_id = NULL; if (nsurl_has_component(url, NSURL_FRAGMENT)) { bool same_url = false; bw->frag_id = nsurl_get_component(url, NSURL_FRAGMENT); /* Compare new URL with existing one (ignoring fragments) */ if ((bw->current_content != NULL) && (hlcache_handle_get_url(bw->current_content) != NULL)) { same_url = nsurl_compare(url, hlcache_handle_get_url( bw->current_content), NSURL_COMPLETE); } /* if we're simply moving to another ID on the same page, * don't bother to fetch, just update the window. */ if ((same_url) && (fetch_is_post == false) && (nsurl_has_component(url, NSURL_QUERY) == false)) { nsurl_unref(url); if (referrer != NULL) { nsurl_unref(referrer); } if ((flags & BW_NAVIGATE_HISTORY) != 0) { browser_window_history_add(bw, bw->current_content, bw->frag_id); } browser_window_update(bw, false); if (bw->current_content != NULL) { browser_window_refresh_url_bar(bw); } return NSERROR_OK; } } browser_window_stop(bw); browser_window_remove_caret(bw, false); browser_window_destroy_children(bw); LOG(("Loading '%s'", nsurl_access(url))); browser_window_set_status(bw, messages_get("Loading")); bw->history_add = (flags & BW_NAVIGATE_HISTORY); /* Verifiable fetches may trigger a download */ if (!(flags & BW_NAVIGATE_UNVERIFIABLE)) { fetch_flags |= HLCACHE_RETRIEVE_MAY_DOWNLOAD; } error = hlcache_handle_retrieve(url, fetch_flags | HLCACHE_RETRIEVE_SNIFF_TYPE, referrer, fetch_is_post ? &post : NULL, browser_window_callback, bw, parent != NULL ? &child : NULL, CONTENT_ANY, &c); switch (error) { case NSERROR_OK: bw->loading_content = c; browser_window_start_throbber(bw); browser_window_refresh_url_bar_internal(bw, url); break; case NSERROR_NO_FETCH_HANDLER: /* no handler for this type */ /** @todo does this always try and download even unverifiable content? */ error = guit->browser->launch_url(url); break; default: /* report error to user */ browser_window_set_status(bw, messages_get_errorcode(error)); /** @todo should the caller report the error? */ warn_user(messages_get_errorcode(error), 0); break; } nsurl_unref(url); if (referrer != NULL) { nsurl_unref(referrer); } /* Record time */ bw->last_action = wallclock(); return error; } /* Exported interface, documented in browser.h */ nsurl* browser_window_get_url(struct browser_window *bw) { assert(bw != NULL); if (bw->current_content != NULL) { return hlcache_handle_get_url(bw->current_content); } else if (bw->loading_content != NULL) { /* TODO: should we return this? */ return hlcache_handle_get_url(bw->loading_content); } return corestring_nsurl_about_blank; } /* Exported interface, documented in browser.h */ const char* browser_window_get_title(struct browser_window *bw) { assert(bw != NULL); if (bw->current_content != NULL) { return content_get_title(bw->current_content); } return NULL; } /* Exported interface, documented in browser.h */ struct history * browser_window_get_history(struct browser_window *bw) { assert(bw != NULL); return bw->history; } /* Exported interface, documented in browser.h */ bool browser_window_has_content(struct browser_window *bw) { assert(bw != NULL); if (bw->current_content == NULL) { return false; } return true; } /* Exported interface, documented in browser.h */ struct hlcache_handle *browser_window_get_content(struct browser_window *bw) { return bw->current_content; } /* Exported interface, documented in browser.h */ nserror browser_window_get_extents(struct browser_window *bw, bool scaled, int *width, int *height) { assert(bw != NULL); if (bw->current_content == NULL) { *width = 0; *height = 0; return NSERROR_BAD_CONTENT; } *width = content_get_width(bw->current_content); *height = content_get_height(bw->current_content); if (scaled) { *width *= bw->scale; *height *= bw->scale; } return NSERROR_OK; } /* * Get the dimensions of the area a browser window occupies * * \param bw The browser window to get dimensions of * \param width Updated to the browser window viewport width * \param height Updated to the browser window viewport height * \param scaled Whether we want the height with scale applied */ void browser_window_get_dimensions(struct browser_window *bw, int *width, int *height, bool scaled) { assert(bw); if (bw->window == NULL) { /* Core managed browser window */ *width = bw->width; *height = bw->height; } else { /* Front end window */ guit->window->get_dimensions(bw->window, width, height, scaled); } } /* * Set the dimensions of the area a browser window occupies * * \param bw The browser window to set dimensions of * \param width Width in pixels * \param height Height in pixels */ void browser_window_set_dimensions(struct browser_window *bw, int width, int height) { assert(bw); if (bw->window == NULL) { /* Core managed browser window */ bw->width = width; bw->height = height; } else { LOG(("Asked to set dimensions of front end window.")); assert(0); } } /** * Redraw browser window, set extent to content, and update title. * * \param bw browser_window * \param scroll_to_top move view to top of page */ void browser_window_update(struct browser_window *bw, bool scroll_to_top) { int x, y; if (bw->current_content == NULL) return; switch (bw->browser_window_type) { case BROWSER_WINDOW_NORMAL: /* Root browser window, constituting a front end window/tab */ guit->window->set_title(bw->window, content_get_title(bw->current_content)); browser_window_update_extent(bw); if (scroll_to_top) browser_window_set_scroll(bw, 0, 0); /* if frag_id exists, then try to scroll to it */ /** @todo don't do this if the user has scrolled */ if (bw->frag_id && html_get_id_offset(bw->current_content, bw->frag_id, &x, &y)) { browser_window_set_scroll(bw, x, y); } guit->window->redraw(bw->window); break; case BROWSER_WINDOW_IFRAME: /* Internal iframe browser window */ assert(bw->parent != NULL); assert(bw->parent->current_content != NULL); browser_window_update_extent(bw); if (scroll_to_top) browser_window_set_scroll(bw, 0, 0); /* if frag_id exists, then try to scroll to it */ /** @todo don't do this if the user has scrolled */ if (bw->frag_id && html_get_id_offset(bw->current_content, bw->frag_id, &x, &y)) { browser_window_set_scroll(bw, x, y); } html_redraw_a_box(bw->parent->current_content, bw->box); break; case BROWSER_WINDOW_FRAME: { struct rect rect; browser_window_update_extent(bw); if (scroll_to_top) browser_window_set_scroll(bw, 0, 0); /* if frag_id exists, then try to scroll to it */ /** @todo don't do this if the user has scrolled */ if (bw->frag_id && html_get_id_offset(bw->current_content, bw->frag_id, &x, &y)) { browser_window_set_scroll(bw, x, y); } rect.x0 = scrollbar_get_offset(bw->scroll_x); rect.y0 = scrollbar_get_offset(bw->scroll_y); rect.x1 = rect.x0 + bw->width; rect.y1 = rect.y0 + bw->height; browser_window_update_box(bw, &rect); } break; default: case BROWSER_WINDOW_FRAMESET: /* Nothing to do */ break; } } void browser_window_update_box(struct browser_window *bw, struct rect *rect) { int pos_x; int pos_y; struct browser_window *top; assert(bw); if (bw->window != NULL) { /* Front end window */ guit->window->update(bw->window, rect); } else { /* Core managed browser window */ browser_window_get_position(bw, true, &pos_x, &pos_y); top = browser_window_get_root(bw); rect->x0 += pos_x / bw->scale; rect->y0 += pos_y / bw->scale; rect->x1 += pos_x / bw->scale; rect->y1 += pos_y / bw->scale; guit->window->update(top->window, rect); } } /** * Stop all fetching activity in a browser window. * * \param bw browser window */ void browser_window_stop(struct browser_window *bw) { int children, index; if (bw->loading_content != NULL) { hlcache_handle_abort(bw->loading_content); hlcache_handle_release(bw->loading_content); bw->loading_content = NULL; } if (bw->current_content != NULL && content_get_status( bw->current_content) != CONTENT_STATUS_DONE) { nserror error; assert(content_get_status(bw->current_content) == CONTENT_STATUS_READY); error = hlcache_handle_abort(bw->current_content); assert(error == NSERROR_OK); } guit->browser->schedule(-1, browser_window_refresh, bw); if (bw->children) { children = bw->rows * bw->cols; for (index = 0; index < children; index++) browser_window_stop(&bw->children[index]); } if (bw->iframes) { children = bw->iframe_count; for (index = 0; index < children; index++) browser_window_stop(&bw->iframes[index]); } if (bw->current_content != NULL) { browser_window_refresh_url_bar(bw); } browser_window_stop_throbber(bw); } /** * Reload the page in a browser window. * * \param bw browser window * \param all whether to reload all objects associated with the page */ void browser_window_reload(struct browser_window *bw, bool all) { hlcache_handle *c; unsigned int i; if (bw->current_content == NULL || bw->loading_content != NULL) return; if (all && content_get_type(bw->current_content) == CONTENT_HTML) { struct html_stylesheet *sheets; struct content_html_object *object; unsigned int count; c = bw->current_content; /* invalidate objects */ object = html_get_objects(c, &count); for (; object != NULL; object = object->next) { if (object->content != NULL) content_invalidate_reuse_data(object->content); } /* invalidate stylesheets */ sheets = html_get_stylesheets(c, &count); for (i = STYLESHEET_START; i != count; i++) { if (sheets[i].sheet != NULL) { content_invalidate_reuse_data(sheets[i].sheet); } } } content_invalidate_reuse_data(bw->current_content); browser_window_navigate(bw, hlcache_handle_get_url(bw->current_content), NULL, BW_NAVIGATE_NONE, NULL, NULL, NULL); } /** * Change the status bar of a browser window. * * \param bw browser window * \param text new status text (copied) */ void browser_window_set_status(struct browser_window *bw, const char *text) { int text_len; /* find topmost window */ while (bw->parent) bw = bw->parent; if ((bw->status_text != NULL) && (strcmp(text, bw->status_text) == 0)) { /* status text is unchanged */ bw->status_match++; return; } /* status text is changed */ text_len = strlen(text); if ((bw->status_text == NULL) || (bw->status_text_len < text_len)) { /* no current string allocation or it is not long enough */ free(bw->status_text); bw->status_text = strdup(text); bw->status_text_len = text_len; } else { /* current allocation has enough space */ memcpy(bw->status_text, text, text_len + 1); } bw->status_miss++; guit->window->set_status(bw->window, bw->status_text); } /** * Change the shape of the mouse pointer * * \param bw Browser window to set shape in * \param shape The pointer shape to use */ void browser_window_set_pointer(struct browser_window *bw, browser_pointer_shape shape) { struct browser_window *root = browser_window_get_root(bw); gui_pointer_shape gui_shape; bool loading; assert(root); assert(root->window); loading = (bw->loading_content != NULL || (bw->current_content && content_get_status(bw->current_content) == CONTENT_STATUS_READY)); if (wallclock() - bw->last_action < 100 && loading) { /* If loading and less than 1 second since last link followed, * force progress indicator pointer */ gui_shape = GUI_POINTER_PROGRESS; } else if (shape == BROWSER_POINTER_AUTO) { /* Up to browser window to decide */ if (loading) gui_shape = GUI_POINTER_PROGRESS; else gui_shape = GUI_POINTER_DEFAULT; } else { /* Use what we were told */ gui_shape = (gui_pointer_shape)shape; } guit->window->set_pointer(root->window, gui_shape); } /* exported function documented in desktop/browser.h */ nserror browser_window_schedule_reformat(struct browser_window *bw) { /* The ugly cast here is so the reformat function can be * passed a gui window pointer in its API rather than void* */ LOG(("Scheduleing %p(%p)", guit->window->reformat, bw->window)); guit->browser->schedule(0, (void(*)(void*))guit->window->reformat, bw->window); return NSERROR_OK; } /** * Reformat a browser window contents to a new width or height. * * \param bw the browser window to reformat * \param width new width * \param height new height */ void browser_window_reformat(struct browser_window *bw, bool background, int width, int height) { hlcache_handle *c = bw->current_content; if (c == NULL) return; if (bw->browser_window_type != BROWSER_WINDOW_IFRAME) { /* Iframe dimensions are already scaled in parent's layout */ width /= bw->scale; height /= bw->scale; } if (bw->window == NULL) { /* Core managed browser window; subtract scrollbar width */ width -= bw->scroll_y ? SCROLLBAR_WIDTH : 0; height -= bw->scroll_x ? SCROLLBAR_WIDTH : 0; width = width > 0 ? width : 0; height = height > 0 ? height : 0; } content_reformat(c, background, width, height); } static void browser_window_set_scale_internal(struct browser_window *bw, float scale) { int i; hlcache_handle *c; if (fabs(bw->scale-scale) < 0.0001) return; bw->scale = scale; c = bw->current_content; if (c != NULL) { if (content_can_reformat(c) == false) { browser_window_update(bw, false); } else { browser_window_schedule_reformat(bw); } } for (i = 0; i < (bw->cols * bw->rows); i++) browser_window_set_scale_internal(&bw->children[i], scale); for (i = 0; i < bw->iframe_count; i++) browser_window_set_scale_internal(&bw->iframes[i], scale); } /* exported interface documented in desktop/browser.h */ void browser_window_set_scale(struct browser_window *bw, float scale, bool all) { while (bw->parent && all) bw = bw->parent; browser_window_set_scale_internal(bw, scale); if (bw->parent) bw = bw->parent; browser_window_recalculate_frameset(bw); } /* exported interface documented in desktop/browser.h */ float browser_window_get_scale(struct browser_window *bw) { return bw->scale; } static void browser_window_find_target_internal(struct browser_window *bw, const char *target, int depth, struct browser_window *page, int *rdepth, struct browser_window **bw_target) { int i; if ((bw->name) && (!strcasecmp(bw->name, target))) { if ((bw == page) || (depth > *rdepth)) { *rdepth = depth; *bw_target = bw; } } if ((!bw->children) && (!bw->iframes)) return; depth++; if (bw->children != NULL) { for (i = 0; i < (bw->cols * bw->rows); i++) { if ((bw->children[i].name) && (!strcasecmp(bw->children[i].name, target))) { if ((page == &bw->children[i]) || (depth > *rdepth)) { *rdepth = depth; *bw_target = &bw->children[i]; } } if (bw->children[i].children) browser_window_find_target_internal( &bw->children[i], target, depth, page, rdepth, bw_target); } } if (bw->iframes != NULL) { for (i = 0; i < bw->iframe_count; i++) browser_window_find_target_internal(&bw->iframes[i], target, depth, page, rdepth, bw_target); } } /** * Locate a browser window in the specified stack according. * * \param bw the browser_window to search all relatives of * \param target the target to locate * \param mouse The current mouse state * \return The browser window the mouse is in */ struct browser_window *browser_window_find_target(struct browser_window *bw, const char *target, browser_mouse_state mouse) { struct browser_window *bw_target; struct browser_window *top; hlcache_handle *c; int rdepth; nserror error; /* use the base target if we don't have one */ c = bw->current_content; if (target == NULL && c != NULL && content_get_type(c) == CONTENT_HTML) target = html_get_base_target(c); if (target == NULL) target = TARGET_SELF; /* allow the simple case of target="_blank" to be ignored if requested */ if ((!(mouse & BROWSER_MOUSE_CLICK_2)) && (!((mouse & BROWSER_MOUSE_CLICK_2) && (mouse & BROWSER_MOUSE_MOD_2))) && (!nsoption_bool(target_blank))) { /* not a mouse button 2 click * not a mouse button 1 click with ctrl pressed * configured to ignore target="_blank" */ if ((target == TARGET_BLANK) || (!strcasecmp(target, "_blank"))) return bw; } /* handle reserved keywords */ if (((nsoption_bool(button_2_tab)) && (mouse & BROWSER_MOUSE_CLICK_2))|| ((!nsoption_bool(button_2_tab)) && ((mouse & BROWSER_MOUSE_CLICK_1) && (mouse & BROWSER_MOUSE_MOD_2))) || ((nsoption_bool(button_2_tab)) && ((target == TARGET_BLANK) || (!strcasecmp(target, "_blank"))))) { /* open in new tab if: * - button_2 opens in new tab and button_2 was pressed * OR * - button_2 doesn't open in new tabs and button_1 was * pressed with ctrl held * OR * - button_2 opens in new tab and the link target is "_blank" */ error = browser_window_create(BW_CREATE_TAB | BW_CREATE_HISTORY | BW_CREATE_CLONE, NULL, NULL, bw, &bw_target); if (error != NSERROR_OK) { return bw; } return bw_target; } else if (((!nsoption_bool(button_2_tab)) && (mouse & BROWSER_MOUSE_CLICK_2)) || ((nsoption_bool(button_2_tab)) && ((mouse & BROWSER_MOUSE_CLICK_1) && (mouse & BROWSER_MOUSE_MOD_2))) || ((!nsoption_bool(button_2_tab)) && ((target == TARGET_BLANK) || (!strcasecmp(target, "_blank"))))) { /* open in new window if: * - button_2 doesn't open in new tabs and button_2 was pressed * OR * - button_2 opens in new tab and button_1 was pressed with * ctrl held * OR * - button_2 doesn't open in new tabs and the link target is * "_blank" */ error = browser_window_create(BW_CREATE_HISTORY | BW_CREATE_CLONE, NULL, NULL, bw, &bw_target); if (error != NSERROR_OK) { return bw; } return bw_target; } else if ((target == TARGET_SELF) || (!strcasecmp(target, "_self"))) { return bw; } else if ((target == TARGET_PARENT) || (!strcasecmp(target, "_parent"))) { if (bw->parent) return bw->parent; return bw; } else if ((target == TARGET_TOP) || (!strcasecmp(target, "_top"))) { while (bw->parent) bw = bw->parent; return bw; } /* find frame according to B.8, ie using the following priorities: * * 1) current frame * 2) closest to front */ rdepth = -1; bw_target = NULL; for (top = bw; top->parent; top = top->parent); browser_window_find_target_internal(top, target, 0, bw, &rdepth, &bw_target); if (bw_target) return bw_target; /* we require a new window using the target name */ if (!nsoption_bool(target_blank)) return bw; error = browser_window_create(BW_CREATE_CLONE | BW_CREATE_HISTORY, NULL, NULL, bw, &bw_target); if (error != NSERROR_OK) { return bw; } /* frame names should begin with an alphabetic character (a-z,A-Z), * however in practice you get things such as '_new' and '2left'. The * only real effect this has is when giving out names as it can be * assumed that an author intended '_new' to create a new nameless * window (ie '_blank') whereas in the case of '2left' the intention * was for a new named window. As such we merely special case windows * that begin with an underscore. */ if (target[0] != '_') { bw_target->name = strdup(target); if (!bw_target->name) warn_user("NoMemory", 0); } return bw_target; } /** * Handles the end of a drag operation in a browser window. * * \param bw browser window * \param mouse state of mouse buttons and modifier keys * \param x coordinate of mouse * \param y coordinate of mouse * * TODO: Remove this function, once these things are associated with content, * rather than bw. */ static void browser_window_mouse_drag_end(struct browser_window *bw, browser_mouse_state mouse, int x, int y) { int scr_x, scr_y; switch (bw->drag_type) { case DRAGGING_SELECTION: case DRAGGING_OTHER: case DRAGGING_CONTENT_SCROLLBAR: /* Drag handled by content handler */ break; case DRAGGING_SCR_X: browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y); scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x); scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y); scrollbar_mouse_drag_end(bw->scroll_x, mouse, scr_x, scr_y); bw->drag_type = DRAGGING_NONE; break; case DRAGGING_SCR_Y: browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y); scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x); scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y); scrollbar_mouse_drag_end(bw->scroll_y, mouse, scr_x, scr_y); bw->drag_type = DRAGGING_NONE; break; default: browser_window_set_drag_type(bw, DRAGGING_NONE, NULL); break; } } /** * Handle non-click mouse action in a browser window. (drag ends, movements) * * \param bw browser window * \param mouse state of mouse buttons and modifier keys * \param x coordinate of mouse * \param y coordinate of mouse */ void browser_window_mouse_track(struct browser_window *bw, browser_mouse_state mouse, int x, int y) { hlcache_handle *c = bw->current_content; const char *status = NULL; browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT; if (bw->window != NULL && bw->drag_window && bw != bw->drag_window) { /* This is the root browser window and there's an active drag * in a sub window. * Pass the mouse action straight on to that bw. */ struct browser_window *drag_bw = bw->drag_window; int off_x = 0; int off_y = 0; browser_window_get_position(drag_bw, true, &off_x, &off_y); if (drag_bw->browser_window_type == BROWSER_WINDOW_FRAME) { browser_window_mouse_track(drag_bw, mouse, x - off_x, y - off_y); } else if (drag_bw->browser_window_type == BROWSER_WINDOW_IFRAME) { browser_window_mouse_track(drag_bw, mouse, x - off_x / bw->scale, y - off_y / bw->scale); } return; } if (bw->children) { /* Browser window has children (frames) */ struct browser_window *child; int cur_child; int children = bw->rows * bw->cols; for (cur_child = 0; cur_child < children; cur_child++) { child = &bw->children[cur_child]; if (x < child->x || y < child->y || child->x + child->width < x || child->y + child->height < y) { /* Click not in this child */ continue; } /* It's this child that contains the mouse; pass * mouse action on to child */ browser_window_mouse_track(child, mouse, x - child->x + scrollbar_get_offset( child->scroll_x), y - child->y + scrollbar_get_offset( child->scroll_y)); /* Mouse action was for this child, we're done */ return; } /* Odd if we reached here, but nothing else can use the click * when there are children. */ return; } if (c == NULL && bw->drag_type != DRAGGING_FRAME) return; if (bw->drag_type != DRAGGING_NONE && !mouse) { browser_window_mouse_drag_end(bw, mouse, x, y); } /* Browser window's horizontal scrollbar */ if (bw->scroll_x != NULL && bw->drag_type != DRAGGING_SCR_Y) { int scr_x, scr_y; browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y); scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x); scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y); if ((scr_x > 0 && scr_x < browser_window_get_scrollbar_len(bw, true) && scr_y > 0 && scr_y < SCROLLBAR_WIDTH && bw->drag_type == DRAGGING_NONE) || bw->drag_type == DRAGGING_SCR_X) { /* Start a scrollbar drag, or continue existing drag */ status = scrollbar_mouse_status_to_message( scrollbar_mouse_action( bw->scroll_x, mouse, scr_x, scr_y)); pointer = BROWSER_POINTER_DEFAULT; if (status != NULL) browser_window_set_status(bw, status); browser_window_set_pointer(bw, pointer); return; } } /* Browser window's vertical scrollbar */ if (bw->scroll_y != NULL) { int scr_x, scr_y; browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y); scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x); scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y); if ((scr_y > 0 && scr_y < browser_window_get_scrollbar_len(bw, false) && scr_x > 0 && scr_x < SCROLLBAR_WIDTH && bw->drag_type == DRAGGING_NONE) || bw->drag_type == DRAGGING_SCR_Y) { /* Start a scrollbar drag, or continue existing drag */ status = scrollbar_mouse_status_to_message( scrollbar_mouse_action( bw->scroll_y, mouse, scr_x, scr_y)); pointer = BROWSER_POINTER_DEFAULT; if (status != NULL) browser_window_set_status(bw, status); browser_window_set_pointer(bw, pointer); return; } } if (bw->drag_type == DRAGGING_FRAME) { browser_window_resize_frame(bw, bw->x + x, bw->y + y); } else if (bw->drag_type == DRAGGING_PAGE_SCROLL) { /* mouse movement since drag started */ int scrollx = bw->drag_start_x - x; int scrolly = bw->drag_start_y - y; /* new scroll offsets */ scrollx += bw->drag_start_scroll_x; scrolly += bw->drag_start_scroll_y; bw->drag_start_scroll_x = scrollx; bw->drag_start_scroll_y = scrolly; browser_window_set_scroll(bw, scrollx, scrolly); } else { assert(c != NULL); content_mouse_track(c, bw, mouse, x, y); } } /** * Handle mouse clicks in a browser window. * * \param bw browser window * \param mouse state of mouse buttons and modifier keys * \param x coordinate of mouse * \param y coordinate of mouse */ void browser_window_mouse_click(struct browser_window *bw, browser_mouse_state mouse, int x, int y) { hlcache_handle *c = bw->current_content; const char *status = NULL; browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT; if (bw->children) { /* Browser window has children (frames) */ struct browser_window *child; int cur_child; int children = bw->rows * bw->cols; for (cur_child = 0; cur_child < children; cur_child++) { child = &bw->children[cur_child]; if (x < child->x || y < child->y || child->x + child->width < x || child->y + child->height < y) { /* Click not in this child */ continue; } /* It's this child that contains the click; pass it * on to child. */ browser_window_mouse_click(child, mouse, x - child->x + scrollbar_get_offset( child->scroll_x), y - child->y + scrollbar_get_offset( child->scroll_y)); /* Mouse action was for this child, we're done */ return; } return; } if (!c) return; if (bw->scroll_x != NULL) { int scr_x, scr_y; browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y); scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x); scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y); if (scr_x > 0 && scr_x < browser_window_get_scrollbar_len(bw, true) && scr_y > 0 && scr_y < SCROLLBAR_WIDTH) { status = scrollbar_mouse_status_to_message( scrollbar_mouse_action( bw->scroll_x, mouse, scr_x, scr_y)); pointer = BROWSER_POINTER_DEFAULT; if (status != NULL) browser_window_set_status(bw, status); browser_window_set_pointer(bw, pointer); return; } } if (bw->scroll_y != NULL) { int scr_x, scr_y; browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y); scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x); scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y); if (scr_y > 0 && scr_y < browser_window_get_scrollbar_len(bw, false) && scr_x > 0 && scr_x < SCROLLBAR_WIDTH) { status = scrollbar_mouse_status_to_message( scrollbar_mouse_action( bw->scroll_y, mouse, scr_x, scr_y)); pointer = BROWSER_POINTER_DEFAULT; if (status != NULL) browser_window_set_status(bw, status); browser_window_set_pointer(bw, pointer); return; } } switch (content_get_type(c)) { case CONTENT_HTML: case CONTENT_TEXTPLAIN: { /* Give bw focus */ struct browser_window *root_bw = browser_window_get_root(bw); if (bw != root_bw->focus) { browser_window_remove_caret(bw, false); browser_window_set_selection(bw, false, true); root_bw->focus = bw; } /* Pass mouse action to content */ content_mouse_action(c, bw, mouse, x, y); } break; default: if (mouse & BROWSER_MOUSE_MOD_2) { if (mouse & BROWSER_MOUSE_DRAG_2) { guit->window->drag_save_object(bw->window, c, GUI_SAVE_OBJECT_NATIVE); } else if (mouse & BROWSER_MOUSE_DRAG_1) { guit->window->drag_save_object(bw->window, c, GUI_SAVE_OBJECT_ORIG); } } else if (mouse & (BROWSER_MOUSE_DRAG_1 | BROWSER_MOUSE_DRAG_2)) { browser_window_page_drag_start(bw, x, y); browser_window_set_pointer(bw, BROWSER_POINTER_MOVE); } break; } } /** * Redraw a rectangular region of a browser window * * \param bw browser window to be redrawn * \param x x co-ord of top-left * \param y y co-ord of top-left * \param width width of rectangle * \param height height of rectangle */ void browser_window_redraw_rect(struct browser_window *bw, int x, int y, int width, int height) { content_request_redraw(bw->current_content, x, y, width, height); } /** * Start drag scrolling the contents of the browser window * * \param bw browser window * \param x x ordinate of initial mouse position * \param y y ordinate */ void browser_window_page_drag_start(struct browser_window *bw, int x, int y) { assert(bw != NULL); browser_window_set_drag_type(bw, DRAGGING_PAGE_SCROLL, NULL); bw->drag_start_x = x; bw->drag_start_y = y; if (bw->window != NULL) { /* Front end window */ guit->window->get_scroll(bw->window, &bw->drag_start_scroll_x, &bw->drag_start_scroll_y); guit->window->scroll_start(bw->window); } else { /* Core managed browser window */ bw->drag_start_scroll_x = scrollbar_get_offset(bw->scroll_x); bw->drag_start_scroll_y = scrollbar_get_offset(bw->scroll_y); } } /** * Check availability of Back action for a given browser window * * \param bw browser window * \return true if Back action is available */ bool browser_window_back_available(struct browser_window *bw) { return (bw && bw->history && browser_window_history_back_available(bw)); } /** * Check availability of Forward action for a given browser window * * \param bw browser window * \return true if Forward action is available */ bool browser_window_forward_available(struct browser_window *bw) { return (bw && bw->history && browser_window_history_forward_available(bw)); } /** * Check availability of Reload action for a given browser window * * \param bw browser window * \return true if Reload action is available */ bool browser_window_reload_available(struct browser_window *bw) { return (bw && bw->current_content && !bw->loading_content); } /** * Check availability of Stop action for a given browser window * * \param bw browser window * \return true if Stop action is available */ bool browser_window_stop_available(struct browser_window *bw) { return (bw && (bw->loading_content || (bw->current_content && (content_get_status(bw->current_content) != CONTENT_STATUS_DONE)))); } /* exported interface documented in browser.h */ nserror browser_set_dpi(int dpi) { nscss_screen_dpi = INTTOFIX(dpi); return NSERROR_OK; } /* exported interface documented in browser.h */ int browser_get_dpi(void) { return FIXTOINT(nscss_screen_dpi); }