mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
124 lines
3.3 KiB
JavaScript
124 lines
3.3 KiB
JavaScript
#ifdef 0
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#endif
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/**
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* This singleton represents the whole 'New Tab Page' and takes care of
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* initializing all its components.
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*/
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let gPage = {
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/**
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* Initializes the page.
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*/
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init: function Page_init() {
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// Add ourselves to the list of pages to receive notifications.
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gAllPages.register(this);
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// Listen for 'unload' to unregister this page.
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addEventListener("unload", this, false);
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// Listen for toggle button clicks.
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let button = document.getElementById("newtab-toggle");
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button.addEventListener("click", this, false);
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// Check if the new tab feature is enabled.
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let enabled = gAllPages.enabled;
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if (enabled)
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this._init();
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this._updateAttributes(enabled);
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},
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/**
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* Listens for notifications specific to this page.
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*/
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observe: function Page_observe() {
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let enabled = gAllPages.enabled;
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this._updateAttributes(enabled);
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// Initialize the whole page if we haven't done that, yet.
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if (enabled)
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this._init();
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},
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/**
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* Updates the whole page and the grid when the storage has changed.
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*/
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update: function Page_update() {
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gGrid.refresh();
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},
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/**
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* Internally initializes the page. This runs only when/if the feature
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* is/gets enabled.
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*/
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_init: function Page_init() {
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if (this._initialized)
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return;
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this._initialized = true;
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gLinks.populateCache(function () {
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// Initialize and render the grid.
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gGrid.init();
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// Initialize the drop target shim.
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gDropTargetShim.init();
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#ifdef XP_MACOSX
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// Workaround to prevent a delay on MacOSX due to a slow drop animation.
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document.addEventListener("dragover", this, false);
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document.addEventListener("drop", this, false);
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#endif
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}.bind(this));
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},
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/**
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* Updates the 'page-disabled' attributes of the respective DOM nodes.
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* @param aValue Whether the New Tab Page is enabled or not.
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*/
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_updateAttributes: function Page_updateAttributes(aValue) {
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let selector = "#newtab-scrollbox, #newtab-toggle, #newtab-grid";
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let nodes = document.querySelectorAll(selector);
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// Set the nodes' states.
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for (let i = 0; i < nodes.length; i++) {
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let node = nodes[i];
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if (aValue)
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node.removeAttribute("page-disabled");
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else
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node.setAttribute("page-disabled", "true");
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}
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// Update the toggle button's title.
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let toggle = document.getElementById("newtab-toggle");
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toggle.setAttribute("title", newTabString(aValue ? "hide" : "show"));
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},
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/**
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* Handles all page events.
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*/
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handleEvent: function Page_handleEvent(aEvent) {
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switch (aEvent.type) {
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case "unload":
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gAllPages.unregister(this);
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break;
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case "click":
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gAllPages.enabled = !gAllPages.enabled;
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break;
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case "dragover":
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if (gDrag.isValid(aEvent) && gDrag.draggedSite)
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aEvent.preventDefault();
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break;
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case "drop":
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if (gDrag.isValid(aEvent) && gDrag.draggedSite) {
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aEvent.preventDefault();
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aEvent.stopPropagation();
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}
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break;
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}
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}
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};
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