The Tor Browser: comparison browser/metro/base/content/startui/TopSitesView.js

comparison: browser/metro/base/content/startui/TopSitesView.js

browser/metro/base/content/startui/TopSitesView.js

branch: TOR_BUG_9701
changeset 15: b8a032363ba2

equal deleted inserted replaced

--1:000000000000
+:cccdf51dcc79
+/* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict"
+Cu.import("resource://gre/modules/PageThumbs.jsm");
+function TopSitesView(aGrid) {
+View.call(this, aGrid);
+// View monitors this for maximum tile display counts
+this.tilePrefName = "browser.display.startUI.topsites.maxresults";
+this.showing = this.maxTiles > 0 && !this.isFirstRun();
+// clean up state when the appbar closes
+StartUI.chromeWin.addEventListener('MozAppbarDismissing', this, false);
+let history = Cc["@mozilla.org/browser/nav-history-service;1"].
+getService(Ci.nsINavHistoryService);
+history.addObserver(this, false);
+Services.obs.addObserver(this, "Metro:RefreshTopsiteThumbnail", false);
+NewTabUtils.allPages.register(this);
+TopSites.prepareCache().then(function(){
+this.populateGrid();
+}.bind(this));
+}
+TopSitesView.prototype = Util.extend(Object.create(View.prototype), {
+_set:null,
+// _lastSelectedSites used to temporarily store blocked/removed sites for undo/restore-ing
+_lastSelectedSites: null,
+// isUpdating used only for testing currently
+isUpdating: false,
+// For View's showing property
+get vbox() {
+return document.getElementById("start-topsites");
+},
+destruct: function destruct() {
+Services.obs.removeObserver(this, "Metro:RefreshTopsiteThumbnail");
+NewTabUtils.allPages.unregister(this);
+if (StartUI.chromeWin) {
+StartUI.chromeWin.removeEventListener('MozAppbarDismissing', this, false);
+}
+View.prototype.destruct.call(this);
+},
+handleItemClick: function tabview_handleItemClick(aItem) {
+let url = aItem.getAttribute("value");
+StartUI.goToURI(url);
+},
+doActionOnSelectedTiles: function(aActionName, aEvent) {
+let tileGroup = this._set;
+let selectedTiles = tileGroup.selectedItems;
+let sites = Array.map(selectedTiles, TopSites._linkFromNode);
+let nextContextActions = new Set();
+switch (aActionName){
+case "delete":
+for (let aNode of selectedTiles) {
+// add some class to transition element before deletion?
+aNode.contextActions.delete('delete');
+// we need new context buttons to show (the tile node will go away though)
+}
+this._lastSelectedSites = (this._lastSelectedSites || []).concat(sites);
+// stop the appbar from dismissing
+aEvent.preventDefault();
+nextContextActions.add('restore');
+TopSites.hideSites(sites);
+break;
+case "restore":
+// usually restore is an undo action, so we have to recreate the tiles and grid selection
+if (this._lastSelectedSites) {
+let selectedUrls = this._lastSelectedSites.map((site) => site.url);
+// re-select the tiles once the tileGroup is done populating and arranging
+tileGroup.addEventListener("arranged", function _onArranged(aEvent){
+for (let url of selectedUrls) {
+let tileNode = tileGroup.querySelector("richgriditem[value='"+url+"']");
+if (tileNode) {
+tileNode.setAttribute("selected", true);
+}
+}
+tileGroup.removeEventListener("arranged", _onArranged, false);
+// <sfoster> we can't just call selectItem n times on tileGroup as selecting means trigger the default action
+// for seltype="single" grids.
+// so we toggle the attributes and raise the selectionchange "manually"
+let event = tileGroup.ownerDocument.createEvent("Events");
+event.initEvent("selectionchange", true, true);
+tileGroup.dispatchEvent(event);
+}, false);
+TopSites.restoreSites(this._lastSelectedSites);
+// stop the appbar from dismissing,
+// the selectionchange event will trigger re-population of the context appbar
+aEvent.preventDefault();
+}
+break;
+case "pin":
+let pinIndices = [];
+Array.forEach(selectedTiles, function(aNode) {
+pinIndices.push( Array.indexOf(aNode.control.items, aNode) );
+aNode.contextActions.delete('pin');
+aNode.contextActions.add('unpin');
+});
+TopSites.pinSites(sites, pinIndices);
+break;
+case "unpin":
+Array.forEach(selectedTiles, function(aNode) {
+aNode.contextActions.delete('unpin');
+aNode.contextActions.add('pin');
+});
+TopSites.unpinSites(sites);
+break;
+// default: no action
+}
+if (nextContextActions.size) {
+// at next tick, re-populate the context appbar
+setTimeout(function(){
+// fire a MozContextActionsChange event to update the context appbar
+let event = document.createEvent("Events");
+event.actions = [...nextContextActions];
+event.initEvent("MozContextActionsChange", true, false);
+tileGroup.dispatchEvent(event);
+},0);
+}
+},
+handleEvent: function(aEvent) {
+switch (aEvent.type){
+case "MozAppbarDismissing":
+// clean up when the context appbar is dismissed - we don't remember selections
+this._lastSelectedSites = null;
+break;
+}
+},
+update: function() {
+// called by the NewTabUtils.allPages.update, notifying us of data-change in topsites
+let grid = this._set,
+dirtySites = TopSites.dirty();
+if (dirtySites.size) {
+// we can just do a partial update and refresh the node representing each dirty tile
+for (let site of dirtySites) {
+let tileNode = grid.querySelector("[value='"+site.url+"']");
+if (tileNode) {
+this.updateTile(tileNode, new Site(site));
+}
+}
+} else {
+// flush, recreate all
+this.isUpdating = true;
+// destroy and recreate all item nodes, skip calling arrangeItems
+this.populateGrid();
+}
+},
+updateTile: function(aTileNode, aSite, aArrangeGrid) {
+if (!(aSite && aSite.url)) {
+throw new Error("Invalid Site object passed to TopSitesView updateTile");
+}
+this._updateFavicon(aTileNode, Util.makeURI(aSite.url));
+Task.spawn(function() {
+let filepath = PageThumbsStorage.getFilePathForURL(aSite.url);
+if (yield OS.File.exists(filepath)) {
+aSite.backgroundImage = 'url("'+PageThumbs.getThumbnailURL(aSite.url)+'")';
+// use the setter when available to update the backgroundImage value
+if ('backgroundImage' in aTileNode &&
+aTileNode.backgroundImage != aSite.backgroundImage) {
+aTileNode.backgroundImage = aSite.backgroundImage;
+} else {
+// just update the attribute for when the node gets the binding applied
+aTileNode.setAttribute("customImage", aSite.backgroundImage);
+}
+}
+});
+aSite.applyToTileNode(aTileNode);
+if (aTileNode.refresh) {
+aTileNode.refresh();
+}
+if (aArrangeGrid) {
+this._set.arrangeItems();
+}
+},
+populateGrid: function populateGrid() {
+this.isUpdating = true;
+let sites = TopSites.getSites();
+let tileset = this._set;
+tileset.clearAll(true);
+if (!this.maxTiles) {
+this.isUpdating = false;
+return;
+} else {
+sites = sites.slice(0, this.maxTiles);
+}
+for (let site of sites) {
+let slot = tileset.nextSlot();
+this.updateTile(slot, site);
+}
+tileset.arrangeItems();
+this.isUpdating = false;
+},
+forceReloadOfThumbnail: function forceReloadOfThumbnail(url) {
+let nodes = this._set.querySelectorAll('richgriditem[value="'+url+'"]');
+for (let item of nodes) {
+if ("isBound" in item && item.isBound) {
+item.refreshBackgroundImage();
+}
+}
+},
+isFirstRun: function isFirstRun() {
+return Services.prefs.getBoolPref("browser.firstrun.show.localepicker");
+},
+_adjustDOMforViewState: function _adjustDOMforViewState(aState) {
+if (!this._set)
+return;
+if (!aState)
+aState = this._set.getAttribute("viewstate");
+View.prototype._adjustDOMforViewState.call(this, aState);
+// Don't show thumbnails in snapped view.
+if (aState == "snapped") {
+document.getElementById("start-topsites-grid").removeAttribute("tiletype");
+} else {
+document.getElementById("start-topsites-grid").setAttribute("tiletype", "thumbnail");
+}
+// propogate tiletype changes down to tile children
+let tileType = this._set.getAttribute("tiletype");
+for (let item of this._set.children) {
+if (tileType) {
+item.setAttribute("tiletype", tileType);
+} else {
+item.removeAttribute("tiletype");
+}
+}
+},
+refreshView: function () {
+this.populateGrid();
+},
+// nsIObservers
+observe: function (aSubject, aTopic, aState) {
+switch (aTopic) {
+case "Metro:RefreshTopsiteThumbnail":
+this.forceReloadOfThumbnail(aState);
+break;
+}
+View.prototype.observe.call(this, aSubject, aTopic, aState);
+this.showing = this.maxTiles > 0 && !this.isFirstRun();
+},
+// nsINavHistoryObserver
+onBeginUpdateBatch: function() {
+},
+onEndUpdateBatch: function() {
+},
+onVisit: function(aURI, aVisitID, aTime, aSessionID,
+aReferringID, aTransitionType) {
+},
+onTitleChanged: function(aURI, aPageTitle) {
+},
+onDeleteURI: function(aURI) {
+},
+onClearHistory: function() {
+if ('clearAll' in this._set)
+this._set.clearAll();
+},
+onPageChanged: function(aURI, aWhat, aValue) {
+},
+onDeleteVisits: function (aURI, aVisitTime, aGUID, aReason, aTransitionType) {
+},
+QueryInterface: function(iid) {
+if (iid.equals(Components.interfaces.nsINavHistoryObserver) ||
+iid.equals(Components.interfaces.nsISupports)) {
+return this;
+}
+throw Cr.NS_ERROR_NO_INTERFACE;
+}
+});
+let TopSitesStartView = {
+_view: null,
+get _grid() { return document.getElementById("start-topsites-grid"); },
+init: function init() {
+this._view = new TopSitesView(this._grid);
+this._grid.removeAttribute("fade");
+},
+uninit: function uninit() {
+if (this._view) {
+this._view.destruct();
+}
+},
+};