/* * Copyright 2006 James Bursa * 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 * User interaction with a CONTENT_HTML (implementation). */ #include #include #include #include "utils/corestrings.h" #include "utils/messages.h" #include "utils/utils.h" #include "utils/log.h" #include "utils/nsoption.h" #include "netsurf/content.h" #include "netsurf/browser_window.h" #include "netsurf/mouse.h" #include "netsurf/misc.h" #include "netsurf/layout.h" #include "content/hlcache.h" #include "desktop/frames.h" #include "desktop/scrollbar.h" #include "desktop/selection.h" #include "desktop/textarea.h" #include "desktop/textinput.h" #include "javascript/js.h" #include "desktop/gui_internal.h" #include "render/box.h" #include "render/box_textarea.h" #include "render/font.h" #include "render/form_internal.h" #include "render/html_internal.h" #include "render/imagemap.h" #include "render/search.h" /** * Get pointer shape for given box * * \param box box in question * \param imagemap whether an imagemap applies to the box */ static browser_pointer_shape get_pointer_shape(struct box *box, bool imagemap) { browser_pointer_shape pointer; css_computed_style *style; enum css_cursor_e cursor; lwc_string **cursor_uris; if (box->type == BOX_FLOAT_LEFT || box->type == BOX_FLOAT_RIGHT) style = box->children->style; else style = box->style; if (style == NULL) return BROWSER_POINTER_DEFAULT; cursor = css_computed_cursor(style, &cursor_uris); switch (cursor) { case CSS_CURSOR_AUTO: if (box->href || (box->gadget && (box->gadget->type == GADGET_IMAGE || box->gadget->type == GADGET_SUBMIT)) || imagemap) { /* link */ pointer = BROWSER_POINTER_POINT; } else if (box->gadget && (box->gadget->type == GADGET_TEXTBOX || box->gadget->type == GADGET_PASSWORD || box->gadget->type == GADGET_TEXTAREA)) { /* text input */ pointer = BROWSER_POINTER_CARET; } else { /* html content doesn't mind */ pointer = BROWSER_POINTER_AUTO; } break; case CSS_CURSOR_CROSSHAIR: pointer = BROWSER_POINTER_CROSS; break; case CSS_CURSOR_POINTER: pointer = BROWSER_POINTER_POINT; break; case CSS_CURSOR_MOVE: pointer = BROWSER_POINTER_MOVE; break; case CSS_CURSOR_E_RESIZE: pointer = BROWSER_POINTER_RIGHT; break; case CSS_CURSOR_W_RESIZE: pointer = BROWSER_POINTER_LEFT; break; case CSS_CURSOR_N_RESIZE: pointer = BROWSER_POINTER_UP; break; case CSS_CURSOR_S_RESIZE: pointer = BROWSER_POINTER_DOWN; break; case CSS_CURSOR_NE_RESIZE: pointer = BROWSER_POINTER_RU; break; case CSS_CURSOR_SW_RESIZE: pointer = BROWSER_POINTER_LD; break; case CSS_CURSOR_SE_RESIZE: pointer = BROWSER_POINTER_RD; break; case CSS_CURSOR_NW_RESIZE: pointer = BROWSER_POINTER_LU; break; case CSS_CURSOR_TEXT: pointer = BROWSER_POINTER_CARET; break; case CSS_CURSOR_WAIT: pointer = BROWSER_POINTER_WAIT; break; case CSS_CURSOR_PROGRESS: pointer = BROWSER_POINTER_PROGRESS; break; case CSS_CURSOR_HELP: pointer = BROWSER_POINTER_HELP; break; default: pointer = BROWSER_POINTER_DEFAULT; break; } return pointer; } /** * Start drag scrolling the contents of a box * * \param box the box to be scrolled * \param x x ordinate of initial mouse position * \param y y ordinate */ static void html_box_drag_start(struct box *box, int x, int y) { int box_x, box_y; int scroll_mouse_x, scroll_mouse_y; box_coords(box, &box_x, &box_y); if (box->scroll_x != NULL) { scroll_mouse_x = x - box_x ; scroll_mouse_y = y - (box_y + box->padding[TOP] + box->height + box->padding[BOTTOM] - SCROLLBAR_WIDTH); scrollbar_start_content_drag(box->scroll_x, scroll_mouse_x, scroll_mouse_y); } else if (box->scroll_y != NULL) { scroll_mouse_x = x - (box_x + box->padding[LEFT] + box->width + box->padding[RIGHT] - SCROLLBAR_WIDTH); scroll_mouse_y = y - box_y; scrollbar_start_content_drag(box->scroll_y, scroll_mouse_x, scroll_mouse_y); } } /** * End overflow scroll scrollbar drags * * \param html html content * \param mouse state of mouse buttons and modifier keys * \param x coordinate of mouse * \param y coordinate of mouse * \param dir Direction of drag */ static size_t html_selection_drag_end(struct html_content *html, browser_mouse_state mouse, int x, int y, int dir) { int pixel_offset; struct box *box; int dx, dy; size_t idx = 0; box = box_pick_text_box(html, x, y, dir, &dx, &dy); if (box) { plot_font_style_t fstyle; font_plot_style_from_css(box->style, &fstyle); guit->layout->position(&fstyle, box->text, box->length, dx, &idx, &pixel_offset); idx += box->byte_offset; } return idx; } /** * Handle mouse tracking (including drags) in an HTML content window. * * \param c content of type html * \param bw browser window * \param mouse state of mouse buttons and modifier keys * \param x coordinate of mouse * \param y coordinate of mouse */ void html_mouse_track(struct content *c, struct browser_window *bw, browser_mouse_state mouse, int x, int y) { html_mouse_action(c, bw, mouse, x, y); } /** * Helper for file gadgets to store their filename. * * Stores the filename unencoded on the dom node associated with the * gadget. * * \todo Get rid of this crap eventually * * \param operation DOM operation * \param key DOM node key being considerd * \param _data The data assocated with the key * \param src The source DOM node. * \param dst The destination DOM node. */ static void html__image_coords_dom_user_data_handler(dom_node_operation operation, dom_string *key, void *_data, struct dom_node *src, struct dom_node *dst) { struct image_input_coords *oldcoords, *coords = _data, *newcoords; if (!dom_string_isequal(corestring_dom___ns_key_image_coords_node_data, key) || coords == NULL) { return; } switch (operation) { case DOM_NODE_CLONED: newcoords = calloc(1, sizeof(*newcoords)); if (newcoords != NULL) { *newcoords = *coords; if (dom_node_set_user_data(dst, corestring_dom___ns_key_image_coords_node_data, newcoords, html__image_coords_dom_user_data_handler, &oldcoords) == DOM_NO_ERR) { free(oldcoords); } } break; case DOM_NODE_DELETED: free(coords); break; case DOM_NODE_RENAMED: case DOM_NODE_IMPORTED: case DOM_NODE_ADOPTED: break; default: LOG("User data operation not handled."); assert(0); } } /** * Handle mouse clicks and movements in an HTML content window. * * \param c content of type html * \param bw browser window * \param mouse state of mouse buttons and modifier keys * \param x coordinate of mouse * \param y coordinate of mouse * * This function handles both hovering and clicking. It is important that the * code path is identical (except that hovering doesn't carry out the action), * so that the status bar reflects exactly what will happen. Having separate * code paths opens the possibility that an attacker will make the status bar * show some harmless action where clicking will be harmful. */ void html_mouse_action(struct content *c, struct browser_window *bw, browser_mouse_state mouse, int x, int y) { html_content *html = (html_content *) c; enum { ACTION_NONE, ACTION_SUBMIT, ACTION_GO } action = ACTION_NONE; const char *title = 0; nsurl *url = 0; char *url_s = NULL; size_t url_l = 0; const char *target = 0; char status_buffer[200]; const char *status = 0; browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT; bool imagemap = false; int box_x = 0, box_y = 0; int gadget_box_x = 0, gadget_box_y = 0; int html_object_pos_x = 0, html_object_pos_y = 0; int text_box_x = 0; struct box *url_box = 0; struct box *gadget_box = 0; struct box *text_box = 0; struct box *box; struct form_control *gadget = 0; hlcache_handle *object = NULL; struct box *html_object_box = NULL; struct browser_window *iframe = NULL; struct box *drag_candidate = NULL; struct scrollbar *scrollbar = NULL; plot_font_style_t fstyle; int scroll_mouse_x = 0, scroll_mouse_y = 0; int padding_left, padding_right, padding_top, padding_bottom; browser_drag_type drag_type = browser_window_get_drag_type(bw); union content_msg_data msg_data; struct dom_node *node = NULL; union html_drag_owner drag_owner; union html_selection_owner sel_owner; bool click = mouse & (BROWSER_MOUSE_PRESS_1 | BROWSER_MOUSE_PRESS_2 | BROWSER_MOUSE_CLICK_1 | BROWSER_MOUSE_CLICK_2 | BROWSER_MOUSE_DRAG_1 | BROWSER_MOUSE_DRAG_2); if (drag_type != DRAGGING_NONE && !mouse && html->visible_select_menu != NULL) { /* drag end: select menu */ form_select_mouse_drag_end(html->visible_select_menu, mouse, x, y); } if (html->visible_select_menu != NULL) { box = html->visible_select_menu->box; box_coords(box, &box_x, &box_y); box_x -= box->border[LEFT].width; box_y += box->height + box->border[BOTTOM].width + box->padding[BOTTOM] + box->padding[TOP]; status = form_select_mouse_action(html->visible_select_menu, mouse, x - box_x, y - box_y); if (status != NULL) { msg_data.explicit_status_text = status; content_broadcast(c, CONTENT_MSG_STATUS, msg_data); } else { int width, height; form_select_get_dimensions(html->visible_select_menu, &width, &height); html->visible_select_menu = NULL; browser_window_redraw_rect(bw, box_x, box_y, width, height); } return; } if (html->drag_type == HTML_DRAG_SELECTION) { /* Selection drag */ struct box *box; int dir = -1; int dx, dy; if (!mouse) { /* End of selection drag */ int dir = -1; size_t idx; if (selection_dragging_start(&html->sel)) dir = 1; idx = html_selection_drag_end(html, mouse, x, y, dir); if (idx != 0) selection_track(&html->sel, mouse, idx); drag_owner.no_owner = true; html_set_drag_type(html, HTML_DRAG_NONE, drag_owner, NULL); return; } if (selection_dragging_start(&html->sel)) dir = 1; box = box_pick_text_box(html, x, y, dir, &dx, &dy); if (box != NULL) { int pixel_offset; size_t idx; plot_font_style_t fstyle; font_plot_style_from_css(box->style, &fstyle); guit->layout->position(&fstyle, box->text, box->length, dx, &idx, &pixel_offset); selection_track(&html->sel, mouse, box->byte_offset + idx); } return; } if (html->drag_type == HTML_DRAG_SCROLLBAR) { struct scrollbar *scr = html->drag_owner.scrollbar; struct html_scrollbar_data *data = scrollbar_get_data(scr); if (!mouse) { /* drag end: scrollbar */ html_overflow_scroll_drag_end(scr, mouse, x, y); } box = data->box; box_coords(box, &box_x, &box_y); if (scrollbar_is_horizontal(scr)) { scroll_mouse_x = x - box_x ; scroll_mouse_y = y - (box_y + box->padding[TOP] + box->height + box->padding[BOTTOM] - SCROLLBAR_WIDTH); status = scrollbar_mouse_status_to_message( scrollbar_mouse_action(scr, mouse, scroll_mouse_x, scroll_mouse_y)); } else { scroll_mouse_x = x - (box_x + box->padding[LEFT] + box->width + box->padding[RIGHT] - SCROLLBAR_WIDTH); scroll_mouse_y = y - box_y; status = scrollbar_mouse_status_to_message( scrollbar_mouse_action(scr, mouse, scroll_mouse_x, scroll_mouse_y)); } msg_data.explicit_status_text = status; content_broadcast(c, CONTENT_MSG_STATUS, msg_data); return; } if (html->drag_type == HTML_DRAG_TEXTAREA_SELECTION || html->drag_type == HTML_DRAG_TEXTAREA_SCROLLBAR) { box = html->drag_owner.textarea; assert(box->gadget != NULL); assert(box->gadget->type == GADGET_TEXTAREA || box->gadget->type == GADGET_PASSWORD || box->gadget->type == GADGET_TEXTBOX); box_coords(box, &box_x, &box_y); textarea_mouse_action(box->gadget->data.text.ta, mouse, x - box_x, y - box_y); /* TODO: Set appropriate statusbar message */ return; } if (html->drag_type == HTML_DRAG_CONTENT_SELECTION || html->drag_type == HTML_DRAG_CONTENT_SCROLL) { box = html->drag_owner.content; assert(box->object != NULL); box_coords(box, &box_x, &box_y); content_mouse_track(box->object, bw, mouse, x - box_x, y - box_y); return; } if (html->drag_type == HTML_DRAG_CONTENT_SELECTION) { box = html->drag_owner.content; assert(box->object != NULL); box_coords(box, &box_x, &box_y); content_mouse_track(box->object, bw, mouse, x - box_x, y - box_y); return; } /* Content related drags handled by now */ assert(html->drag_type == HTML_DRAG_NONE); /* search the box tree for a link, imagemap, form control, or * box with scrollbars */ box = html->layout; /* Consider the margins of the html page now */ box_x = box->margin[LEFT]; box_y = box->margin[TOP]; /* descend through visible boxes setting more specific values for: * box - deepest box at point * html_object_box - html object * html_object_pos_x - html object * html_object_pos_y - html object * object - non html object * iframe - iframe * url - href or imagemap * target - href or imagemap or gadget * url_box - href or imagemap * imagemap - imagemap * gadget - gadget * gadget_box - gadget * gadget_box_x - gadget * gadget_box_y - gadget * title - title * pointer * * drag_candidate - first box with scroll * padding_left - box with scroll * padding_right * padding_top * padding_bottom * scrollbar - inside padding box stops decent * scroll_mouse_x - inside padding box stops decent * scroll_mouse_y - inside padding box stops decent * * text_box - text box * text_box_x - text_box */ do { if ((box->style != NULL) && (css_computed_visibility(box->style) == CSS_VISIBILITY_HIDDEN)) { continue; } if (box->node != NULL) { node = box->node; } if (box->object) { if (content_get_type(box->object) == CONTENT_HTML) { html_object_box = box; html_object_pos_x = box_x; html_object_pos_y = box_y; } else { object = box->object; } } if (box->iframe) { iframe = box->iframe; } if (box->href) { url = box->href; target = box->target; url_box = box; } if (box->usemap) { url = imagemap_get(html, box->usemap, box_x, box_y, x, y, &target); if (url) { imagemap = true; url_box = box; } } if (box->gadget) { gadget = box->gadget; gadget_box = box; gadget_box_x = box_x; gadget_box_y = box_y; if (gadget->form) target = gadget->form->target; } if (box->title) { title = box->title; } pointer = get_pointer_shape(box, false); if ((box->scroll_x != NULL) || (box->scroll_y != NULL)) { if (drag_candidate == NULL) { drag_candidate = box; } padding_left = box_x + scrollbar_get_offset(box->scroll_x); padding_right = padding_left + box->padding[LEFT] + box->width + box->padding[RIGHT]; padding_top = box_y + scrollbar_get_offset(box->scroll_y); padding_bottom = padding_top + box->padding[TOP] + box->height + box->padding[BOTTOM]; if ((x > padding_left) && (x < padding_right) && (y > padding_top) && (y < padding_bottom)) { /* mouse inside padding box */ if ((box->scroll_y != NULL) && (x > (padding_right - SCROLLBAR_WIDTH))) { /* mouse above vertical box scroll */ scrollbar = box->scroll_y; scroll_mouse_x = x - (padding_right - SCROLLBAR_WIDTH); scroll_mouse_y = y - padding_top; break; } else if ((box->scroll_x != NULL) && (y > (padding_bottom - SCROLLBAR_WIDTH))) { /* mouse above horizontal box scroll */ scrollbar = box->scroll_x; scroll_mouse_x = x - padding_left; scroll_mouse_y = y - (padding_bottom - SCROLLBAR_WIDTH); break; } } } if (box->text && !box->object) { text_box = box; text_box_x = box_x; } } while ((box = box_at_point(box, x, y, &box_x, &box_y)) != NULL); /* use of box_x, box_y, or content below this point is probably a * mistake; they will refer to the last box returned by box_at_point */ assert(node != NULL); if (scrollbar) { status = scrollbar_mouse_status_to_message( scrollbar_mouse_action(scrollbar, mouse, scroll_mouse_x, scroll_mouse_y)); pointer = BROWSER_POINTER_DEFAULT; } else if (gadget) { textarea_mouse_status ta_status; switch (gadget->type) { case GADGET_SELECT: status = messages_get("FormSelect"); pointer = BROWSER_POINTER_MENU; if (mouse & BROWSER_MOUSE_CLICK_1 && nsoption_bool(core_select_menu)) { html->visible_select_menu = gadget; form_open_select_menu(c, gadget, form_select_menu_callback, c); pointer = BROWSER_POINTER_DEFAULT; } else if (mouse & BROWSER_MOUSE_CLICK_1) { msg_data.select_menu.gadget = gadget; content_broadcast(c, CONTENT_MSG_SELECTMENU, msg_data); } break; case GADGET_CHECKBOX: status = messages_get("FormCheckbox"); if (mouse & BROWSER_MOUSE_CLICK_1) { gadget->selected = !gadget->selected; dom_html_input_element_set_checked( (dom_html_input_element *)(gadget->node), gadget->selected); html__redraw_a_box(html, gadget_box); } break; case GADGET_RADIO: status = messages_get("FormRadio"); if (mouse & BROWSER_MOUSE_CLICK_1) form_radio_set(gadget); break; case GADGET_IMAGE: if (mouse & BROWSER_MOUSE_CLICK_1) { struct image_input_coords *coords, *oldcoords; /** \todo Find a way to not ignore errors */ coords = calloc(1, sizeof(*coords)); if (coords == NULL) { return; } coords->x = x - gadget_box_x; coords->y = y - gadget_box_y; if (dom_node_set_user_data( gadget->node, corestring_dom___ns_key_image_coords_node_data, coords, html__image_coords_dom_user_data_handler, &oldcoords) != DOM_NO_ERR) return; free(oldcoords); } /* drop through */ case GADGET_SUBMIT: if (gadget->form) { snprintf(status_buffer, sizeof status_buffer, messages_get("FormSubmit"), gadget->form->action); status = status_buffer; pointer = get_pointer_shape(gadget_box, false); if (mouse & (BROWSER_MOUSE_CLICK_1 | BROWSER_MOUSE_CLICK_2)) action = ACTION_SUBMIT; } else { status = messages_get("FormBadSubmit"); } break; case GADGET_TEXTBOX: case GADGET_PASSWORD: case GADGET_TEXTAREA: if (gadget->type == GADGET_TEXTAREA) status = messages_get("FormTextarea"); else status = messages_get("FormTextbox"); if (click && (html->selection_type != HTML_SELECTION_TEXTAREA || html->selection_owner.textarea != gadget_box)) { sel_owner.none = true; html_set_selection(html, HTML_SELECTION_NONE, sel_owner, true); } ta_status = textarea_mouse_action(gadget->data.text.ta, mouse, x - gadget_box_x, y - gadget_box_y); if (ta_status & TEXTAREA_MOUSE_EDITOR) { pointer = get_pointer_shape(gadget_box, false); } else { pointer = BROWSER_POINTER_DEFAULT; status = scrollbar_mouse_status_to_message( ta_status >> 3); } break; case GADGET_HIDDEN: /* not possible: no box generated */ break; case GADGET_RESET: status = messages_get("FormReset"); break; case GADGET_FILE: status = messages_get("FormFile"); if (mouse & BROWSER_MOUSE_CLICK_1) { msg_data.gadget_click.gadget = gadget; content_broadcast(c, CONTENT_MSG_GADGETCLICK, msg_data); } break; case GADGET_BUTTON: /* This gadget cannot be activated */ status = messages_get("FormButton"); break; } } else if (object && (mouse & BROWSER_MOUSE_MOD_2)) { if (mouse & BROWSER_MOUSE_DRAG_2) { msg_data.dragsave.type = CONTENT_SAVE_NATIVE; msg_data.dragsave.content = object; content_broadcast(c, CONTENT_MSG_DRAGSAVE, msg_data); } else if (mouse & BROWSER_MOUSE_DRAG_1) { msg_data.dragsave.type = CONTENT_SAVE_ORIG; msg_data.dragsave.content = object; content_broadcast(c, CONTENT_MSG_DRAGSAVE, msg_data); } /* \todo should have a drag-saving object msg */ } else if (iframe) { int pos_x, pos_y; float scale = browser_window_get_scale(bw); browser_window_get_position(iframe, false, &pos_x, &pos_y); pos_x /= scale; pos_y /= scale; if (mouse & BROWSER_MOUSE_CLICK_1 || mouse & BROWSER_MOUSE_CLICK_2) { browser_window_mouse_click(iframe, mouse, x - pos_x, y - pos_y); } else { browser_window_mouse_track(iframe, mouse, x - pos_x, y - pos_y); } } else if (html_object_box) { if (click && (html->selection_type != HTML_SELECTION_CONTENT || html->selection_owner.content != html_object_box)) { sel_owner.none = true; html_set_selection(html, HTML_SELECTION_NONE, sel_owner, true); } if (mouse & BROWSER_MOUSE_CLICK_1 || mouse & BROWSER_MOUSE_CLICK_2) { content_mouse_action(html_object_box->object, bw, mouse, x - html_object_pos_x, y - html_object_pos_y); } else { content_mouse_track(html_object_box->object, bw, mouse, x - html_object_pos_x, y - html_object_pos_y); } } else if (url) { if (nsoption_bool(display_decoded_idn) == true) { if (nsurl_get_utf8(url, &url_s, &url_l) != NSERROR_OK) { /* Unable to obtain a decoded IDN. This is not a fatal error. * Ensure the string pointer is NULL so we use the encoded version. */ url_s = NULL; } } if (title) { snprintf(status_buffer, sizeof status_buffer, "%s: %s", url_s ? url_s : nsurl_access(url), title); } else { snprintf(status_buffer, sizeof status_buffer, "%s", url_s ? url_s : nsurl_access(url)); } status = status_buffer; if (url_s != NULL) free(url_s); pointer = get_pointer_shape(url_box, imagemap); if (mouse & BROWSER_MOUSE_CLICK_1 && mouse & BROWSER_MOUSE_MOD_1) { /* force download of link */ browser_window_navigate(bw, url, content_get_url(c), BW_NAVIGATE_DOWNLOAD, NULL, NULL, NULL); } else if (mouse & BROWSER_MOUSE_CLICK_2 && mouse & BROWSER_MOUSE_MOD_1) { msg_data.savelink.url = url; msg_data.savelink.title = title; content_broadcast(c, CONTENT_MSG_SAVELINK, msg_data); } else if (mouse & (BROWSER_MOUSE_CLICK_1 | BROWSER_MOUSE_CLICK_2)) action = ACTION_GO; } else { bool done = false; /* frame resizing */ if (browser_window_frame_resize_start(bw, mouse, x, y, &pointer)) { if (mouse & (BROWSER_MOUSE_DRAG_1 | BROWSER_MOUSE_DRAG_2)) { status = messages_get("FrameDrag"); } done = true; } /* if clicking in the main page, remove the selection from any * text areas */ if (!done) { if (click && html->focus_type != HTML_FOCUS_SELF) { union html_focus_owner fo; fo.self = true; html_set_focus(html, HTML_FOCUS_SELF, fo, true, 0, 0, 0, NULL); } if (click && html->selection_type != HTML_SELECTION_SELF) { sel_owner.none = true; html_set_selection(html, HTML_SELECTION_NONE, sel_owner, true); } if (text_box) { int pixel_offset; size_t idx; font_plot_style_from_css(text_box->style, &fstyle); guit->layout->position(&fstyle, text_box->text, text_box->length, x - text_box_x, &idx, &pixel_offset); if (selection_click(&html->sel, mouse, text_box->byte_offset + idx)) { /* key presses must be directed at the * main browser window, paste text * operations ignored */ html_drag_type drag_type; union html_drag_owner drag_owner; if (selection_dragging(&html->sel)) { drag_type = HTML_DRAG_SELECTION; drag_owner.no_owner = true; html_set_drag_type(html, drag_type, drag_owner, NULL); status = messages_get( "Selecting"); } done = true; } } else if (mouse & BROWSER_MOUSE_PRESS_1) { sel_owner.none = true; selection_clear(&html->sel, true); } if (selection_defined(&html->sel)) { sel_owner.none = false; html_set_selection(html, HTML_SELECTION_SELF, sel_owner, true); } else if (click && html->selection_type != HTML_SELECTION_NONE) { sel_owner.none = true; html_set_selection(html, HTML_SELECTION_NONE, sel_owner, true); } } if (!done) { if (title) status = title; if (mouse & BROWSER_MOUSE_DRAG_1) { if (mouse & BROWSER_MOUSE_MOD_2) { msg_data.dragsave.type = CONTENT_SAVE_COMPLETE; msg_data.dragsave.content = NULL; content_broadcast(c, CONTENT_MSG_DRAGSAVE, msg_data); } else { if (drag_candidate == NULL) { browser_window_page_drag_start( bw, x, y); } else { html_box_drag_start( drag_candidate, x, y); } pointer = BROWSER_POINTER_MOVE; } } else if (mouse & BROWSER_MOUSE_DRAG_2) { if (mouse & BROWSER_MOUSE_MOD_2) { msg_data.dragsave.type = CONTENT_SAVE_SOURCE; msg_data.dragsave.content = NULL; content_broadcast(c, CONTENT_MSG_DRAGSAVE, msg_data); } else { if (drag_candidate == NULL) { browser_window_page_drag_start( bw, x, y); } else { html_box_drag_start( drag_candidate, x, y); } pointer = BROWSER_POINTER_MOVE; } } } if (mouse && mouse < BROWSER_MOUSE_MOD_1) { /* ensure key presses still act on the browser window */ union html_focus_owner fo; fo.self = true; html_set_focus(html, HTML_FOCUS_SELF, fo, true, 0, 0, 0, NULL); } } if (!iframe && !html_object_box) { msg_data.explicit_status_text = status; content_broadcast(c, CONTENT_MSG_STATUS, msg_data); msg_data.pointer = pointer; content_broadcast(c, CONTENT_MSG_POINTER, msg_data); } /* fire dom click event */ if (mouse & BROWSER_MOUSE_CLICK_1) { fire_dom_event(corestring_dom_click, node, true, true); } /* deferred actions that can cause this browser_window to be destroyed * and must therefore be done after set_status/pointer */ switch (action) { case ACTION_SUBMIT: form_submit(content_get_url(c), browser_window_find_target(bw, target, mouse), gadget->form, gadget); break; case ACTION_GO: browser_window_navigate(browser_window_find_target(bw, target, mouse), url, content_get_url(c), BW_NAVIGATE_HISTORY, NULL, NULL, NULL); break; case ACTION_NONE: break; } } /** * Handle keypresses. * * \param c content of type HTML * \param key The UCS4 character codepoint * \return true if key handled, false otherwise */ bool html_keypress(struct content *c, uint32_t key) { html_content *html = (html_content *) c; struct selection *sel = &html->sel; struct box *box; switch (html->focus_type) { case HTML_FOCUS_CONTENT: box = html->focus_owner.content; return content_keypress(box->object, key); case HTML_FOCUS_TEXTAREA: box = html->focus_owner.textarea; return box_textarea_keypress(html, box, key); default: /* Deal with it below */ break; } switch (key) { case NS_KEY_COPY_SELECTION: selection_copy_to_clipboard(sel); return true; case NS_KEY_CLEAR_SELECTION: selection_clear(sel, true); return true; case NS_KEY_SELECT_ALL: selection_select_all(sel); return true; case NS_KEY_ESCAPE: if (selection_defined(sel)) { selection_clear(sel, true); return true; } /* if there's no selection, leave Escape for the caller */ return false; } return false; } /** * Handle search. * * \param c content of type HTML * \param context front end private data * \param flags search flags * \param string search string */ void html_search(struct content *c, void *context, search_flags_t flags, const char *string) { html_content *html = (html_content *)c; assert(c != NULL); if (string != NULL && html->search_string != NULL && strcmp(string, html->search_string) == 0 && html->search != NULL) { /* Continue prev. search */ search_step(html->search, flags, string); } else if (string != NULL) { /* New search */ free(html->search_string); html->search_string = strdup(string); if (html->search_string == NULL) return; if (html->search != NULL) { search_destroy_context(html->search); html->search = NULL; } html->search = search_create_context(c, CONTENT_HTML, context); if (html->search == NULL) return; search_step(html->search, flags, string); } else { /* Clear search */ html_search_clear(c); free(html->search_string); html->search_string = NULL; } } /** * Terminate a search. * * \param c content of type HTML */ void html_search_clear(struct content *c) { html_content *html = (html_content *)c; assert(c != NULL); free(html->search_string); html->search_string = NULL; if (html->search != NULL) { search_destroy_context(html->search); } html->search = NULL; } /** * Callback for in-page scrollbars. */ void html_overflow_scroll_callback(void *client_data, struct scrollbar_msg_data *scrollbar_data) { struct html_scrollbar_data *data = client_data; html_content *html = (html_content *)data->c; struct box *box = data->box; union content_msg_data msg_data; html_drag_type drag_type; union html_drag_owner drag_owner; switch(scrollbar_data->msg) { case SCROLLBAR_MSG_MOVED: if (html->reflowing == true) { /* Can't redraw during layout, and it will * be redrawn after layout anyway. */ break; } html__redraw_a_box(html, box); break; case SCROLLBAR_MSG_SCROLL_START: { struct rect rect = { .x0 = scrollbar_data->x0, .y0 = scrollbar_data->y0, .x1 = scrollbar_data->x1, .y1 = scrollbar_data->y1 }; drag_type = HTML_DRAG_SCROLLBAR; drag_owner.scrollbar = scrollbar_data->scrollbar; html_set_drag_type(html, drag_type, drag_owner, &rect); } break; case SCROLLBAR_MSG_SCROLL_FINISHED: drag_type = HTML_DRAG_NONE; drag_owner.no_owner = true; html_set_drag_type(html, drag_type, drag_owner, NULL); msg_data.pointer = BROWSER_POINTER_AUTO; content_broadcast(data->c, CONTENT_MSG_POINTER, msg_data); break; } } /** * End overflow scroll scrollbar drags * * \param scrollbar scrollbar widget * \param mouse state of mouse buttons and modifier keys * \param x coordinate of mouse * \param y coordinate of mouse */ void html_overflow_scroll_drag_end(struct scrollbar *scrollbar, browser_mouse_state mouse, int x, int y) { int scroll_mouse_x, scroll_mouse_y, box_x, box_y; struct html_scrollbar_data *data = scrollbar_get_data(scrollbar); struct box *box; box = data->box; box_coords(box, &box_x, &box_y); if (scrollbar_is_horizontal(scrollbar)) { scroll_mouse_x = x - box_x; scroll_mouse_y = y - (box_y + box->padding[TOP] + box->height + box->padding[BOTTOM] - SCROLLBAR_WIDTH); scrollbar_mouse_drag_end(scrollbar, mouse, scroll_mouse_x, scroll_mouse_y); } else { scroll_mouse_x = x - (box_x + box->padding[LEFT] + box->width + box->padding[RIGHT] - SCROLLBAR_WIDTH); scroll_mouse_y = y - box_y; scrollbar_mouse_drag_end(scrollbar, mouse, scroll_mouse_x, scroll_mouse_y); } } /* Documented in html_internal.h */ void html_set_drag_type(html_content *html, html_drag_type drag_type, union html_drag_owner drag_owner, const struct rect *rect) { union content_msg_data msg_data; assert(html != NULL); html->drag_type = drag_type; html->drag_owner = drag_owner; switch (drag_type) { case HTML_DRAG_NONE: assert(drag_owner.no_owner == true); msg_data.drag.type = CONTENT_DRAG_NONE; break; case HTML_DRAG_SCROLLBAR: case HTML_DRAG_TEXTAREA_SCROLLBAR: case HTML_DRAG_CONTENT_SCROLL: msg_data.drag.type = CONTENT_DRAG_SCROLL; break; case HTML_DRAG_SELECTION: assert(drag_owner.no_owner == true); /* Fall through */ case HTML_DRAG_TEXTAREA_SELECTION: case HTML_DRAG_CONTENT_SELECTION: msg_data.drag.type = CONTENT_DRAG_SELECTION; break; } msg_data.drag.rect = rect; /* Inform of the content's drag status change */ content_broadcast((struct content *)html, CONTENT_MSG_DRAG, msg_data); } /* Documented in html_internal.h */ void html_set_focus(html_content *html, html_focus_type focus_type, union html_focus_owner focus_owner, bool hide_caret, int x, int y, int height, const struct rect *clip) { union content_msg_data msg_data; int x_off = 0; int y_off = 0; struct rect cr; bool textarea_lost_focus = html->focus_type == HTML_FOCUS_TEXTAREA && focus_type != HTML_FOCUS_TEXTAREA; assert(html != NULL); switch (focus_type) { case HTML_FOCUS_SELF: assert(focus_owner.self == true); if (html->focus_type == HTML_FOCUS_SELF) /* Don't need to tell anyone anything */ return; break; case HTML_FOCUS_CONTENT: box_coords(focus_owner.content, &x_off, &y_off); break; case HTML_FOCUS_TEXTAREA: box_coords(focus_owner.textarea, &x_off, &y_off); break; } html->focus_type = focus_type; html->focus_owner = focus_owner; if (textarea_lost_focus) { msg_data.caret.type = CONTENT_CARET_REMOVE; } else if (focus_type != HTML_FOCUS_SELF && hide_caret) { msg_data.caret.type = CONTENT_CARET_HIDE; } else { if (clip != NULL) { cr = *clip; cr.x0 += x_off; cr.y0 += y_off; cr.x1 += x_off; cr.y1 += y_off; } msg_data.caret.type = CONTENT_CARET_SET_POS; msg_data.caret.pos.x = x + x_off; msg_data.caret.pos.y = y + y_off; msg_data.caret.pos.height = height; msg_data.caret.pos.clip = (clip == NULL) ? NULL : &cr; } /* Inform of the content's drag status change */ content_broadcast((struct content *)html, CONTENT_MSG_CARET, msg_data); } /* Documented in html_internal.h */ void html_set_selection(html_content *html, html_selection_type selection_type, union html_selection_owner selection_owner, bool read_only) { union content_msg_data msg_data; struct box *box; bool changed = false; bool same_type = html->selection_type == selection_type; assert(html != NULL); if ((selection_type == HTML_SELECTION_NONE && html->selection_type != HTML_SELECTION_NONE) || (selection_type != HTML_SELECTION_NONE && html->selection_type == HTML_SELECTION_NONE)) /* Existance of selection has changed, and we'll need to * inform our owner */ changed = true; /* Clear any existing selection */ if (html->selection_type != HTML_SELECTION_NONE) { switch (html->selection_type) { case HTML_SELECTION_SELF: if (same_type) break; selection_clear(&html->sel, true); break; case HTML_SELECTION_TEXTAREA: if (same_type && html->selection_owner.textarea == selection_owner.textarea) break; box = html->selection_owner.textarea; textarea_clear_selection(box->gadget->data.text.ta); break; case HTML_SELECTION_CONTENT: if (same_type && html->selection_owner.content == selection_owner.content) break; box = html->selection_owner.content; content_clear_selection(box->object); break; default: break; } } html->selection_type = selection_type; html->selection_owner = selection_owner; if (!changed) /* Don't need to report lack of change to owner */ return; /* Prepare msg */ switch (selection_type) { case HTML_SELECTION_NONE: assert(selection_owner.none == true); msg_data.selection.selection = false; break; case HTML_SELECTION_SELF: assert(selection_owner.none == false); /* fall through */ case HTML_SELECTION_TEXTAREA: case HTML_SELECTION_CONTENT: msg_data.selection.selection = true; break; default: break; } msg_data.selection.read_only = read_only; /* Inform of the content's selection status change */ content_broadcast((struct content *)html, CONTENT_MSG_SELECTION, msg_data); }