524 lines
19 KiB
JavaScript
524 lines
19 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const Clutter = imports.gi.Clutter;
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const Lang = imports.lang;
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const Shell = imports.gi.Shell;
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const Signals = imports.signals;
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const St = imports.gi.St;
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const Mainloop = imports.mainloop;
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const Gettext = imports.gettext.domain('gnome-shell');
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const _ = Gettext.gettext;
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const DocInfo = imports.misc.docInfo;
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const DND = imports.ui.dnd;
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const GenericDisplay = imports.ui.genericDisplay;
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const Main = imports.ui.main;
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const Search = imports.ui.search;
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const MAX_DASH_DOCS = 50;
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const DASH_DOCS_ICON_SIZE = 16;
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const DEFAULT_SPACING = 4;
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/* This class represents a single display item containing information about a document.
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* We take the current number of seconds in the constructor to avoid looking up the current
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* time for every item when they are created in a batch.
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*
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* docInfo - DocInfo object containing information about the document
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* currentSeconds - current number of seconds since the epoch
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*/
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function DocDisplayItem(docInfo, currentSecs) {
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this._init(docInfo, currentSecs);
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}
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DocDisplayItem.prototype = {
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__proto__: GenericDisplay.GenericDisplayItem.prototype,
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_init : function(docInfo, currentSecs) {
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GenericDisplay.GenericDisplayItem.prototype._init.call(this);
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this._docInfo = docInfo;
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this._setItemInfo(docInfo.name, '');
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this._timeoutTime = -1;
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this._resetTimeDisplay(currentSecs);
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},
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//// Public methods ////
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getUpdateTimeoutTime: function() {
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return this._timeoutTime;
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},
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// Update any relative-time based displays for this item.
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redisplay: function(currentSecs) {
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this._resetTimeDisplay(currentSecs);
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},
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//// Public method overrides ////
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// Opens a document represented by this display item.
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launch : function() {
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this._docInfo.launch();
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},
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//// Protected method overrides ////
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// Returns an icon for the item.
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_createIcon : function() {
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return this._docInfo.createIcon(GenericDisplay.ITEM_DISPLAY_ICON_SIZE);
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},
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// Returns a preview icon for the item.
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_createPreviewIcon : function() {
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return this._docInfo.createIcon(GenericDisplay.PREVIEW_ICON_SIZE);
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},
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// Creates and returns a large preview icon, but only if this._docInfo is an image file
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// and we were able to generate a pixbuf from it successfully.
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_createLargePreviewIcon : function() {
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if (this._docInfo.mimeType == null || this._docInfo.mimeType.indexOf('image/') != 0)
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return null;
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try {
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return St.TextureCache.get_default().load_uri_sync(St.TextureCachePolicy.NONE,
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this._docInfo.uri, -1, -1);
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} catch (e) {
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// An exception will be raised when the image format isn't know
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/* FIXME: http://bugzilla.gnome.org/show_bug.cgi?id=591480: should
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* only ignore GDK_PIXBUF_ERROR_UNKNOWN_TYPE. */
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return null;
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}
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},
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//// Drag and Drop ////
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shellWorkspaceLaunch: function() {
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this.launch();
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},
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//// Private Methods ////
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// Updates the last visited time displayed in the description text for the item.
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_resetTimeDisplay: function(currentSecs) {
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let lastSecs = this._docInfo.timestamp;
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let timeDelta = currentSecs - lastSecs;
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let [text, nextUpdate] = global.format_time_relative_pretty(timeDelta);
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this._timeoutTime = currentSecs + nextUpdate;
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this._setDescriptionText(text);
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}
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};
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/* This class represents a display containing a collection of document items.
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* The documents are sorted by how recently they were last visited.
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*/
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function DocDisplay() {
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this._init();
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}
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DocDisplay.prototype = {
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__proto__: GenericDisplay.GenericDisplay.prototype,
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_init : function() {
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GenericDisplay.GenericDisplay.prototype._init.call(this);
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// We keep a single timeout callback for updating last visited times
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// for all the items in the display. This avoids creating individual
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// callbacks for each item in the display. So proper time updates
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// for individual items and item details depend on the item being
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// associated with one of the displays.
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this._updateTimeoutTargetTime = -1;
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this._updateTimeoutId = 0;
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this._docManager = DocInfo.getDocManager();
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this._docsStale = true;
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this._docManager.connect('changed', Lang.bind(this, function(mgr, userData) {
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this._docsStale = true;
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// Changes in local recent files should not happen when we are in the Overview mode,
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// but redisplaying right away is cool when we use Zephyr.
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// Also, we might be displaying remote documents, like Google Docs, in the future
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// which might be edited by someone else.
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this._redisplay(GenericDisplay.RedisplayFlags.NONE);
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}));
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this.connect('destroy', Lang.bind(this, function (o) {
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if (this._updateTimeoutId > 0)
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Mainloop.source_remove(this._updateTimeoutId);
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}));
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},
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//// Protected method overrides ////
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// Gets the list of recent items from the recent items manager.
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_refreshCache : function() {
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if (!this._docsStale)
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return true;
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this._allItems = {};
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Lang.copyProperties(this._docManager.getInfosByUri(), this._allItems);
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this._docsStale = false;
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return false;
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},
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// Sets the list of the displayed items based on how recently they were last visited.
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_setDefaultList : function() {
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// It seems to be an implementation detail of the Mozilla JavaScript that object
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// properties are returned during the iteration in the same order in which they were
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// defined, but it is not a guarantee according to this
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// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Statements/for...in
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// While this._allItems associative array seems to always be ordered by last added,
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// as the results of this._recentManager.get_items() based on which it is constructed are,
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// we should do the sorting manually because we want the order to be based on last visited.
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//
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// This function is called each time the search string is set back to '' or we display
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// the Overview, so we are doing the sorting over the same items multiple times if the list
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// of recent items didn't change. We could store an additional array of doc ids and sort
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// them once when they are returned by this._recentManager.get_items() to avoid having to do
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// this sorting each time, but the sorting seems to be very fast anyway, so there is no need
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// to introduce an additional class variable.
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this._matchedItems = {};
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this._matchedItemKeys = [];
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let docIdsToRemove = [];
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for (docId in this._allItems) {
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this._matchedItems[docId] = 1;
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this._matchedItemKeys.push(docId);
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}
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for (docId in docIdsToRemove) {
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delete this._allItems[docId];
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}
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this._matchedItemKeys.sort(Lang.bind(this, this._compareItems));
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},
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// Compares items associated with the item ids based on how recently the items
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// were last visited.
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// Returns an integer value indicating the result of the comparison.
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_compareItems : function(itemIdA, itemIdB) {
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let docA = this._allItems[itemIdA];
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let docB = this._allItems[itemIdB];
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return docB.timestamp - docA.timestamp;
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},
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// Checks if the item info can be a match for the search string by checking
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// the name of the document. Item info is expected to be GtkRecentInfo.
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// Returns a boolean flag indicating if itemInfo is a match.
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_isInfoMatching : function(itemInfo, search) {
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if (!itemInfo.exists())
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return false;
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if (search == null || search == '')
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return true;
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let name = itemInfo.name.toLowerCase();
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if (name.indexOf(search) >= 0)
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return true;
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// TODO: we can also check doc URIs, so that
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// if you search for a directory name, we display recent files from it
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return false;
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},
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// Creates a DocDisplayItem based on itemInfo, which is expected to be a DocInfo object.
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_createDisplayItem: function(itemInfo) {
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let currentSecs = new Date().getTime() / 1000;
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let docDisplayItem = new DocDisplayItem(itemInfo, currentSecs);
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this._updateTimeoutCallback(docDisplayItem, currentSecs);
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return docDisplayItem;
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},
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//// Private Methods ////
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// A callback function that redisplays the items, updating their descriptions,
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// and sets up a new timeout callback.
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_docTimeout: function () {
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let currentSecs = new Date().getTime() / 1000;
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this._updateTimeoutId = 0;
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this._updateTimeoutTargetTime = -1;
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for (let docId in this._displayedItems) {
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let docDisplayItem = this._displayedItems[docId];
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docDisplayItem.redisplay(currentSecs);
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this._updateTimeoutCallback(docDisplayItem, currentSecs);
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}
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return false;
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},
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// Updates the timeout callback if the timeout time for the docDisplayItem
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// is earlier than the target time for the current timeout callback.
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_updateTimeoutCallback: function (docDisplayItem, currentSecs) {
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let timeoutTime = docDisplayItem.getUpdateTimeoutTime();
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if (this._updateTimeoutTargetTime < 0 || timeoutTime < this._updateTimeoutTargetTime) {
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if (this._updateTimeoutId > 0)
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Mainloop.source_remove(this._updateTimeoutId);
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this._updateTimeoutId = Mainloop.timeout_add_seconds(timeoutTime - currentSecs, Lang.bind(this, this._docTimeout));
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this._updateTimeoutTargetTime = timeoutTime;
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}
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}
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};
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Signals.addSignalMethods(DocDisplay.prototype);
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function DashDocDisplayItem(docInfo) {
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this._init(docInfo);
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}
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DashDocDisplayItem.prototype = {
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_init: function(docInfo) {
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this._info = docInfo;
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this._icon = docInfo.createIcon(DASH_DOCS_ICON_SIZE);
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this.actor = new St.Clickable({ style_class: 'recent-docs-item',
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reactive: true,
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x_align: St.Align.START });
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let box = new St.BoxLayout({ style_class: 'recent-docs-item-box' });
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this.actor.set_child(box);
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box.add(this._icon);
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let text = new St.Label({ text: docInfo.name });
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box.add(text);
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this.actor.connect('clicked', Lang.bind(this, function () {
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docInfo.launch();
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Main.overview.hide();
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}));
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this.actor._delegate = this;
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let draggable = DND.makeDraggable(this.actor);
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draggable.connect('drag-begin',
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Lang.bind(this, function() {
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Main.overview.beginItemDrag(this);
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}));
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draggable.connect('drag-end',
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Lang.bind(this, function() {
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Main.overview.endItemDrag(this);
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}));
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},
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getUri: function() {
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return this._info.uri;
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},
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getDragActorSource: function() {
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return this._icon;
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},
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getDragActor: function(stageX, stageY) {
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this.dragActor = this._info.createIcon(DASH_DOCS_ICON_SIZE);
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return this.dragActor;
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},
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//// Drag and drop functions ////
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shellWorkspaceLaunch: function () {
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this._info.launch();
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}
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};
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/**
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* Class used to display two column recent documents in the dash
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*/
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function DashDocDisplay() {
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this._init();
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}
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DashDocDisplay.prototype = {
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_init: function() {
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this.actor = new Shell.GenericContainer();
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this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
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this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
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this.actor.connect('allocate', Lang.bind(this, this._allocate));
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this._workId = Main.initializeDeferredWork(this.actor, Lang.bind(this, this._redisplay));
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this._actorsByUri = {};
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this._docManager = DocInfo.getDocManager();
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this._docManager.connect('changed', Lang.bind(this, this._onDocsChanged));
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this._pendingDocsChange = true;
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this._checkDocExistence = false;
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},
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_getPreferredWidth: function(actor, forHeight, alloc) {
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let children = actor.get_children();
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// We use two columns maximum. Just take the min and natural size of the
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// first two items, even though strictly speaking it's not correct; we'd
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// need to calculate how many items we could fit for the height, then
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// take the biggest preferred width for each column.
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// In practice the dash gets a fixed width anyways.
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// If we have one child, add its minimum and natural size
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if (children.length > 0) {
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let [minSize, naturalSize] = children[0].get_preferred_width(forHeight);
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alloc.min_size += minSize;
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alloc.natural_size += naturalSize;
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}
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// If we have two, add its size, plus DEFAULT_SPACING
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if (children.length > 1) {
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let [minSize, naturalSize] = children[1].get_preferred_width(forHeight);
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alloc.min_size += DEFAULT_SPACING + minSize;
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alloc.natural_size += DEFAULT_SPACING + naturalSize;
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}
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},
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_getPreferredHeight: function(actor, forWidth, alloc) {
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let children = actor.get_children();
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// The width of an item is our allocated width, minus spacing, divided in half.
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this._itemWidth = Math.floor((forWidth - DEFAULT_SPACING) / 2);
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let maxNatural = 0;
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for (let i = 0; i < children.length; i++) {
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let child = children[i];
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let [minSize, naturalSize] = child.get_preferred_height(this._itemWidth);
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maxNatural = Math.max(maxNatural, naturalSize);
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}
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this._itemHeight = maxNatural;
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let firstColumnChildren = Math.ceil(children.length / 2);
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alloc.natural_size = (firstColumnChildren * maxNatural +
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(firstColumnChildren - 1) * DEFAULT_SPACING);
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},
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_allocate: function(actor, box, flags) {
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let width = box.x2 - box.x1;
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let height = box.y2 - box.y1;
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// Make sure this._itemWidth/Height have been computed, even
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// if the parent actor didn't check our size before allocating.
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// (Not clear if that is required or not as a Clutter
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// invariant; this is safe and cheap because of caching.)
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actor.get_preferred_height(width);
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let children = actor.get_children();
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let x = 0;
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let y = 0;
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let columnIndex = 0;
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let i = 0;
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// Loop over the children, going vertically down first. When we run
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// out of vertical space (our y variable is bigger than box.y2), switch
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// to the second column.
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while (i < children.length) {
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let child = children[i];
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if (y + this._itemHeight > box.y2) {
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// Is this the second column, or we're in
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// the first column and can't even fit one
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// item? In that case, break.
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if (columnIndex == 1 || i == 0) {
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break;
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}
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// Set x to the halfway point.
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columnIndex += 1;
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x = x + this._itemWidth + DEFAULT_SPACING;
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// And y is back to the top.
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y = 0;
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// Retry this same item, now that we're in the second column.
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// By looping back to the top here, we re-test the size
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// again for the second column.
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continue;
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}
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let childBox = new Clutter.ActorBox();
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childBox.x1 = x;
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childBox.y1 = y;
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childBox.x2 = childBox.x1 + this._itemWidth;
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childBox.y2 = y + this._itemHeight;
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y = childBox.y2 + DEFAULT_SPACING;
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child.allocate(childBox, flags);
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this.actor.set_skip_paint(child, false);
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i++;
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}
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if (this._checkDocExistence) {
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// Now we know how many docs we are displaying, queue a check to see if any of them
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// have been deleted. If they are deleted, then we'll get a 'changed' signal; since
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// we'll now be displaying items we weren't previously, we'll check again to see
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// if they were deleted, and so forth and so on.
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// TODO: We should change this to ask for as many as we can fit in the given space:
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// https://bugzilla.gnome.org/show_bug.cgi?id=603522#c23
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this._docManager.queueExistenceCheck(i);
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this._checkDocExistence = false;
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}
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for (; i < children.length; i++)
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this.actor.set_skip_paint(children[i], true);
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},
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_onDocsChanged: function() {
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this._checkDocExistence = true;
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Main.queueDeferredWork(this._workId);
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},
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_redisplay: function() {
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// Should be kept alive by the _actorsByUri
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this.actor.remove_all();
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let docs = this._docManager.getTimestampOrderedInfos();
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for (let i = 0; i < docs.length && i < MAX_DASH_DOCS; i++) {
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let doc = docs[i];
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let display = this._actorsByUri[doc.uri];
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if (display) {
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this.actor.add_actor(display.actor);
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} else {
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let display = new DashDocDisplayItem(doc);
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this.actor.add_actor(display.actor);
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this._actorsByUri[doc.uri] = display;
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}
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}
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// Any unparented actors must have been deleted
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for (let uri in this._actorsByUri) {
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let display = this._actorsByUri[uri];
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if (display.actor.get_parent() == null) {
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display.actor.destroy();
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delete this._actorsByUri[uri];
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}
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}
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this.emit('changed');
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}
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};
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Signals.addSignalMethods(DashDocDisplay.prototype);
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function DocSearchProvider() {
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this._init();
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}
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DocSearchProvider.prototype = {
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__proto__: Search.SearchProvider.prototype,
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_init: function(name) {
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Search.SearchProvider.prototype._init.call(this, _("RECENT ITEMS"));
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this._docManager = DocInfo.getDocManager();
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},
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getResultMeta: function(resultId) {
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let docInfo = this._docManager.lookupByUri(resultId);
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if (!docInfo)
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return null;
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return { 'id': resultId,
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'name': docInfo.name,
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'icon': docInfo.createIcon(Search.RESULT_ICON_SIZE)};
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},
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activateResult: function(id) {
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let docInfo = this._docManager.lookupByUri(id);
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docInfo.launch();
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},
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getInitialResultSet: function(terms) {
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return this._docManager.initialSearch(terms);
|
|
},
|
|
|
|
getSubsearchResultSet: function(previousResults, terms) {
|
|
return this._docManager.subsearch(previousResults, terms);
|
|
},
|
|
|
|
expandSearch: function(terms) {
|
|
log('TODO expand docs search');
|
|
}
|
|
};
|