db630b2945
Rework the previously extant Application category code to display in the expanded list. Add a "Frequent" category which corresponds to the most_used_apps, and selected by default. Instead of adding the background and shadow as expanded items to the results/details panes as fixed, we slave the background/shadow sizes to the results using notify::allocation. Also clean up the code for sizing the details pane, using a common function which adjusts its x position in one place.
801 lines
32 KiB
JavaScript
801 lines
32 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const Big = imports.gi.Big;
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const Clutter = imports.gi.Clutter;
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const Gio = imports.gi.Gio;
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const Gdk = imports.gi.Gdk;
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const Gtk = imports.gi.Gtk;
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const Lang = imports.lang;
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const Mainloop = imports.mainloop;
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const Pango = imports.gi.Pango;
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const Signals = imports.signals;
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const Shell = imports.gi.Shell;
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const Tidy = imports.gi.Tidy;
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const Button = imports.ui.button;
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const DND = imports.ui.dnd;
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const Link = imports.ui.link;
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const ITEM_DISPLAY_NAME_COLOR = new Clutter.Color();
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ITEM_DISPLAY_NAME_COLOR.from_pixel(0xffffffff);
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const ITEM_DISPLAY_DESCRIPTION_COLOR = new Clutter.Color();
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ITEM_DISPLAY_DESCRIPTION_COLOR.from_pixel(0xffffffbb);
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const ITEM_DISPLAY_BACKGROUND_COLOR = new Clutter.Color();
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ITEM_DISPLAY_BACKGROUND_COLOR.from_pixel(0x00000000);
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const ITEM_DISPLAY_SELECTED_BACKGROUND_COLOR = new Clutter.Color();
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ITEM_DISPLAY_SELECTED_BACKGROUND_COLOR.from_pixel(0x4f6fadaa);
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const DISPLAY_CONTROL_SELECTED_COLOR = new Clutter.Color();
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DISPLAY_CONTROL_SELECTED_COLOR.from_pixel(0x112288ff);
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const PREVIEW_BOX_BACKGROUND_COLOR = new Clutter.Color();
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PREVIEW_BOX_BACKGROUND_COLOR.from_pixel(0xADADADf0);
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const HOT_PINK_DEBUG = new Clutter.Color();
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HOT_PINK_DEBUG.from_pixel(0xFF8888FF);
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const ITEM_DISPLAY_HEIGHT = 50;
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const ITEM_DISPLAY_ICON_SIZE = 48;
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const ITEM_DISPLAY_PADDING_TOP = 1;
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const ITEM_DISPLAY_PADDING_RIGHT = 2;
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const DEFAULT_COLUMN_GAP = 6;
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const LABEL_HEIGHT = 16;
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const PREVIEW_ICON_SIZE = 96;
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const PREVIEW_BOX_PADDING = 6;
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const PREVIEW_BOX_SPACING = 4;
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const PREVIEW_BOX_CORNER_RADIUS = 10;
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// how far relative to the full item width the preview box should be placed
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const PREVIEW_PLACING = 3/4;
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const PREVIEW_DETAILS_MIN_WIDTH = PREVIEW_ICON_SIZE * 2;
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const INFORMATION_BUTTON_SIZE = 16;
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/* This is a virtual class that represents a single display item containing
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* a name, a description, and an icon. It allows selecting an item and represents
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* it by highlighting it with a different background color than the default.
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*
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* availableWidth - total width available for the item
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*/
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function GenericDisplayItem(availableWidth) {
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this._init(availableWidth);
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}
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GenericDisplayItem.prototype = {
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_init: function(availableWidth) {
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this._availableWidth = availableWidth;
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this.actor = new Clutter.Group({ reactive: true,
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width: availableWidth,
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height: ITEM_DISPLAY_HEIGHT });
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this.actor._delegate = this;
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this.actor.connect('button-release-event',
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Lang.bind(this,
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function() {
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// Activates the item by launching it
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this.emit('activate');
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return true;
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}));
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let draggable = DND.makeDraggable(this.actor);
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draggable.connect('drag-begin', Lang.bind(this, this._onDragBegin));
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this._bg = new Big.Box({ background_color: ITEM_DISPLAY_BACKGROUND_COLOR,
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corner_radius: 4,
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x: 0, y: 0,
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width: availableWidth, height: ITEM_DISPLAY_HEIGHT });
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this.actor.add_actor(this._bg);
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let global = Shell.Global.get();
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let infoIconUri = "file://" + global.imagedir + "info.svg";
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let infoIcon = Shell.TextureCache.get_default().load_uri_sync(infoIconUri,
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INFORMATION_BUTTON_SIZE,
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INFORMATION_BUTTON_SIZE);
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this._informationButton = new Button.iconButton(this.actor, INFORMATION_BUTTON_SIZE, infoIcon);
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this._informationButton.actor.x = availableWidth - ITEM_DISPLAY_PADDING_RIGHT - INFORMATION_BUTTON_SIZE;
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this._informationButton.actor.y = ITEM_DISPLAY_HEIGHT / 2 - INFORMATION_BUTTON_SIZE / 2;
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// Connecting to the button-press-event for the information button ensures that the actor,
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// which is a draggable actor, does not get the button-press-event and doesn't initiate
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// the dragging, which then prevents us from getting the button-release-event for the button.
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this._informationButton.actor.connect('button-press-event',
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Lang.bind(this,
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function() {
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return true;
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}));
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this._informationButton.actor.connect('button-release-event',
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Lang.bind(this,
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function() {
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// Selects the item by highlighting it and displaying its details
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this.emit('select');
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return true;
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}));
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this.actor.add_actor(this._informationButton.actor);
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this._informationButton.actor.lower_bottom();
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this._name = null;
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this._description = null;
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this._icon = null;
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this._previewIcon = null;
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this.dragActor = null;
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},
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//// Draggable object interface ////
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// Returns a cloned texture of the item's icon to represent the item as it
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// is being dragged.
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getDragActor: function(stageX, stageY) {
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this.dragActor = this._createIcon();
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// If the user dragged from the icon itself, then position
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// the dragActor over the original icon. Otherwise center it
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// around the pointer
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let [iconX, iconY] = this._icon.get_transformed_position();
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let [iconWidth, iconHeight] = this._icon.get_transformed_size();
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if (stageX > iconX && stageX <= iconX + iconWidth &&
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stageY > iconY && stageY <= iconY + iconHeight)
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this.dragActor.set_position(iconX, iconY);
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else
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this.dragActor.set_position(stageX - this.dragActor.width / 2, stageY - this.dragActor.height / 2);
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return this.dragActor;
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},
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// Returns the item icon, a separate copy of which is used to
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// represent the item as it is being dragged. This is used to
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// determine a snap-back location for the drag icon if it does
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// not get accepted by any drop target.
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getDragActorSource: function() {
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return this._icon;
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},
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//// Public methods ////
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// Shows the information button when the item was drawn under the mouse pointer.
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onDrawnUnderPointer: function() {
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this._informationButton.show();
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},
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// Highlights the item by setting a different background color than the default
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// if isSelected is true, removes the highlighting otherwise.
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markSelected: function(isSelected) {
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let color;
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if (isSelected) {
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color = ITEM_DISPLAY_SELECTED_BACKGROUND_COLOR;
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this._informationButton.forceShow(true);
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}
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else {
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color = ITEM_DISPLAY_BACKGROUND_COLOR;
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this._informationButton.forceShow(false);
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}
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this._bg.background_color = color;
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},
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/*
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* Returns an actor containing item details. In the future details can have more information than what
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* the preview pop-up has and be item-type specific.
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*
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* availableWidth - width available for displaying details
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* availableHeight - height available for displaying details
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*/
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createDetailsActor: function(availableWidth, availableHeight) {
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let details = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
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spacing: PREVIEW_BOX_SPACING,
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width: availableWidth });
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let mainDetails = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
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spacing: PREVIEW_BOX_SPACING,
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width: availableWidth });
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// Inner box with name and description
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let textDetails = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
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spacing: PREVIEW_BOX_SPACING });
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let detailsName = new Clutter.Text({ color: ITEM_DISPLAY_NAME_COLOR,
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font_name: "Sans bold 14px",
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line_wrap: true,
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text: this._name.text});
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textDetails.append(detailsName, Big.BoxPackFlags.NONE);
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let detailsDescription = new Clutter.Text({ color: ITEM_DISPLAY_NAME_COLOR,
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font_name: "Sans 14px",
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line_wrap: true,
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text: this._description.text });
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textDetails.append(detailsDescription, Big.BoxPackFlags.NONE);
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mainDetails.append(textDetails, Big.BoxPackFlags.EXPAND);
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this._ensurePreviewIconCreated();
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let largePreviewIcon = this._createLargePreviewIcon(availableWidth, Math.max(0, availableHeight - mainDetails.height - PREVIEW_BOX_SPACING));
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if (this._previewIcon != null && largePreviewIcon == null) {
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let previewIconClone = new Clutter.Clone({ source: this._previewIcon });
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mainDetails.prepend(previewIconClone, Big.BoxPackFlags.NONE);
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}
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details.append(mainDetails, Big.BoxPackFlags.NONE);
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if (largePreviewIcon != null) {
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let largePreview = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL });
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largePreview.append(largePreviewIcon, Big.BoxPackFlags.NONE);
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details.append(largePreview, Big.BoxPackFlags.NONE);
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}
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return details;
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},
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// Destoys the item.
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destroy: function() {
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this.actor.destroy();
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},
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//// Pure virtual public methods ////
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// Performes an action associated with launching this item, such as opening a file or an application.
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launch: function() {
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throw new Error("Not implemented");
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},
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//// Protected methods ////
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/*
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* Creates the graphical elements for the item based on the item information.
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*
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* nameText - name of the item
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* descriptionText - short description of the item
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*/
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_setItemInfo: function(nameText, descriptionText) {
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if (this._name != null) {
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// this also removes this._name from the parent container,
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// so we don't need to call this.actor.remove_actor(this._name) directly
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this._name.destroy();
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this._name = null;
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}
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if (this._description != null) {
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this._description.destroy();
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this._description = null;
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}
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if (this._icon != null) {
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// though we get the icon from elsewhere, we assume its ownership here,
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// and therefore should be responsible for distroying it
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this._icon.destroy();
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this._icon = null;
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}
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// This ensures we'll create a new previewIcon next time we need it
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if (this._previewIcon != null) {
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this._previewIcon.destroy();
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this._previewIcon = null;
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}
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this._icon = this._createIcon();
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this.actor.add_actor(this._icon);
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let textWidth = this._availableWidth - (ITEM_DISPLAY_ICON_SIZE + 4) - INFORMATION_BUTTON_SIZE - ITEM_DISPLAY_PADDING_RIGHT;
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this._name = new Clutter.Text({ color: ITEM_DISPLAY_NAME_COLOR,
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font_name: "Sans 14px",
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width: textWidth,
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ellipsize: Pango.EllipsizeMode.END,
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text: nameText,
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x: ITEM_DISPLAY_ICON_SIZE + 4,
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y: ITEM_DISPLAY_PADDING_TOP });
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this.actor.add_actor(this._name);
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this._description = new Clutter.Text({ color: ITEM_DISPLAY_DESCRIPTION_COLOR,
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font_name: "Sans 12px",
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width: textWidth,
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ellipsize: Pango.EllipsizeMode.END,
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text: descriptionText ? descriptionText : "",
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x: this._name.x,
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y: this._name.height + 4 });
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this.actor.add_actor(this._description);
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},
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//// Virtual protected methods ////
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// Creates and returns a large preview icon, but only if we have a detailed image.
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_createLargePreviewIcon : function(availableWidth, availableHeight) {
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return null;
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},
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//// Pure virtual protected methods ////
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// Returns an icon for the item.
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_createIcon: function() {
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throw new Error("Not implemented");
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},
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// Ensures the preview icon is created.
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_ensurePreviewIconCreated: function() {
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throw new Error("Not implemented");
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},
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//// Private methods ////
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// Hides the information button once the item starts being dragged.
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_onDragBegin : function (draggable, time) {
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// For some reason, we are not getting leave-event signal when we are dragging an item,
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// so we should remove the link manually.
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this._informationButton.actor.hide();
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}
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};
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Signals.addSignalMethods(GenericDisplayItem.prototype);
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/* This is a virtual class that represents a display containing a collection of items
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* that can be filtered with a search string.
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*
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* width - width available for the display
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*/
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function GenericDisplay(width) {
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this._init(width);
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}
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GenericDisplay.prototype = {
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_init : function(width) {
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this._search = '';
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this._expanded = false;
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this._width = width;
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this._maxItemsPerPage = null;
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this._list = new Shell.OverflowList({ width: this._width,
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spacing: 6.0,
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item_height: ITEM_DISPLAY_HEIGHT });
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this._list.connect('notify::n-pages', Lang.bind(this, function (grid, alloc) {
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this._updateDisplayControl(true);
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}));
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this._list.connect('notify::page', Lang.bind(this, function (grid, alloc) {
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this._updateDisplayControl(false);
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}));
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// map<itemId, Object> where Object represents the item info
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this._allItems = {};
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// an array of itemIds of items that match the current request
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// in the order in which the items should be displayed
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this._matchedItems = [];
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// map<itemId, GenericDisplayItem>
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this._displayedItems = {};
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this._displayedItemsCount = 0;
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this._selectedIndex = -1;
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// These two are public - .actor is the normal "actor subclass" property,
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// but we also expose a .displayControl actor which is separate.
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// See also getNavigationArea.
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this.actor = this._list;
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this.displayControl = new Big.Box({ background_color: ITEM_DISPLAY_BACKGROUND_COLOR,
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spacing: 12,
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orientation: Big.BoxOrientation.HORIZONTAL});
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this._availableWidthForItemDetails = width;
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this.selectedItemDetails = new Big.Box({});
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},
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//// Public methods ////
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// Sets dimensions available for the item details display.
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setAvailableDimensionsForItemDetails: function(availableWidth, availableHeight) {
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this._availableWidthForItemDetails = availableWidth;
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this._availableHeightForItemDetails = availableHeight;
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},
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// Returns dimensions available for the item details display.
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getAvailableDimensionsForItemDetails: function() {
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return [this._availableWidthForItemDetails, this._availableHeightForItemDetails];
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},
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// Sets the search string and displays the matching items.
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setSearch: function(text) {
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this._search = text.toLowerCase();
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this._redisplay(true);
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},
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// Launches the item that is currently selected and emits 'activated' signal.
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activateSelected: function() {
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if (this._selectedIndex != -1) {
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let selected = this._findDisplayedByIndex(this._selectedIndex);
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selected.launch()
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this.emit('activated');
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}
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},
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// Moves the selection one up. If the selection was already on the top item, it's moved
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// to the bottom one. Returns true if the selection actually moved up, false if it wrapped
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// around to the bottom.
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selectUp: function() {
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let selectedUp = true;
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let prev = this._selectedIndex - 1;
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if (this._selectedIndex <= 0) {
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prev = this._displayedItemsCount - 1;
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selectedUp = false;
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}
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this._selectIndex(prev);
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return selectedUp;
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},
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// Moves the selection one down. If the selection was already on the bottom item, it's moved
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// to the top one. Returns true if the selection actually moved down, false if it wrapped
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// around to the top.
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selectDown: function() {
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let selectedDown = true;
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let next = this._selectedIndex + 1;
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if (this._selectedIndex == this._displayedItemsCount - 1) {
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next = 0;
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selectedDown = false;
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}
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this._selectIndex(next);
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return selectedDown;
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},
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// Selects the first item among the displayed items.
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selectFirstItem: function() {
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if (this.hasItems())
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this._selectIndex(0);
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},
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// Selects the last item among the displayed items.
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selectLastItem: function() {
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if (this.hasItems())
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this._selectIndex(this._displayedItemsCount - 1);
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},
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// Returns true if the display has some item selected.
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hasSelected: function() {
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return this._selectedIndex != -1;
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},
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// Removes selection if some display item is selected.
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unsetSelected: function() {
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this._selectIndex(-1);
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},
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// Returns true if the display has any displayed items.
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hasItems: function() {
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return this._displayedItemsCount > 0;
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},
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// Updates the displayed items and makes the display actor visible.
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show: function() {
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this._list.show();
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this._redisplay(true);
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},
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// Hides the display actor.
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hide: function() {
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this._list.hide();
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this._filterReset();
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this._removeAllDisplayItems();
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},
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// Returns an actor which acts as a sidebar; this is used for
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// the applications category view
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getNavigationArea: function () {
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return null;
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},
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//// Protected methods ////
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/*
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* Displays items that match the current request and should show up on the current page.
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* Updates the display control to reflect the matched items set and the page selected.
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*
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* resetDisplayControl - indicates if the display control should be re-created because
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* the results or the space allocated for them changed. If it's false,
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* the existing display control is used and only the page links are
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* updated to reflect the current page selection.
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*/
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_displayMatchedItems: function(resetDisplayControl) {
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// When generating a new list to display, we first remove all the old
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// displayed items which will unset the selection. So we need
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// to keep a flag which indicates if this display had the selection.
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let hadSelected = this.hasSelected();
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this._removeAllDisplayItems();
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for (let i = 0; i < this._matchedItems.length; i++) {
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this._addDisplayItem(this._matchedItems[i]);
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}
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if (hadSelected) {
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this._selectedIndex = -1;
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this.selectFirstItem();
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}
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// We currently redisplay matching items and raise the sideshow as part of two different callbacks.
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// Checking what is under the pointer after a timeout allows us to not merge these callbacks into one, at least for now.
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Mainloop.timeout_add(5,
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Lang.bind(this,
|
|
function() {
|
|
// Check if the pointer is over one of the items and display the information button if it is.
|
|
let [child, x, y, mask] = Gdk.Screen.get_default().get_root_window().get_pointer();
|
|
let global = Shell.Global.get();
|
|
let actor = global.stage.get_actor_at_pos(Clutter.PickMode.REACTIVE,
|
|
x, y);
|
|
if (actor != null) {
|
|
let item = this._findDisplayedByActor(actor);
|
|
if (item != null) {
|
|
item.onDrawnUnderPointer();
|
|
}
|
|
}
|
|
return false;
|
|
}));
|
|
},
|
|
|
|
// Creates a display item based on the information associated with itemId
|
|
// and adds it to the displayed items.
|
|
_addDisplayItem : function(itemId) {
|
|
if (this._displayedItems.hasOwnProperty(itemId)) {
|
|
log("Tried adding a display item for " + itemId + ", but an item with this item id is already among displayed items.");
|
|
return;
|
|
}
|
|
|
|
let itemInfo = this._allItems[itemId];
|
|
let displayItem = this._createDisplayItem(itemInfo, this._width);
|
|
|
|
displayItem.connect('activate',
|
|
Lang.bind(this,
|
|
function() {
|
|
// update the selection
|
|
this._selectIndex(this._getIndexOfDisplayedActor(displayItem.actor));
|
|
this.activateSelected();
|
|
}));
|
|
|
|
displayItem.connect('select',
|
|
Lang.bind(this,
|
|
function() {
|
|
// update the selection
|
|
this._selectIndex(this._getIndexOfDisplayedActor(displayItem.actor));
|
|
}));
|
|
this._list.add_actor(displayItem.actor);
|
|
this._displayedItems[itemId] = displayItem;
|
|
this._displayedItemsCount++;
|
|
},
|
|
|
|
// Removes an item identifed by the itemId from the displayed items.
|
|
_removeDisplayItem: function(itemId) {
|
|
let displayItem = this._displayedItems[itemId];
|
|
let displayItemIndex = this._getIndexOfDisplayedActor(displayItem.actor);
|
|
|
|
if (this.hasSelected() && (this._displayedItemsCount == 1 || !this._list.visible)) {
|
|
this.unsetSelected();
|
|
} else if (this.hasSelected() && displayItemIndex < this._selectedIndex) {
|
|
this.selectUp();
|
|
}
|
|
|
|
displayItem.destroy();
|
|
|
|
delete this._displayedItems[itemId];
|
|
this._displayedItemsCount--;
|
|
},
|
|
|
|
// Removes all displayed items.
|
|
_removeAllDisplayItems: function() {
|
|
this.unsetSelected();
|
|
for (itemId in this._displayedItems)
|
|
this._removeDisplayItem(itemId);
|
|
},
|
|
|
|
// Return true if there's an active search or other constraint
|
|
// on the list
|
|
_filterActive: function() {
|
|
return this._search != "";
|
|
},
|
|
|
|
// Called when we are resetting state
|
|
_filterReset: function() {
|
|
this.unsetSelected();
|
|
},
|
|
|
|
/*
|
|
* Updates the displayed items, applying the search string if one exists.
|
|
*
|
|
* resetPage - indicates if the page selection should be reset when displaying the matching results.
|
|
* We reset the page selection when the change in results was initiated by the user by
|
|
* entering a different search criteria or by viewing the results list in a different
|
|
* size mode, but we keep the page selection the same if the results got updated on
|
|
* their own while the user was browsing through the result pages.
|
|
*/
|
|
_redisplay: function(resetPage) {
|
|
if (!this._list.visible)
|
|
return;
|
|
|
|
this._refreshCache();
|
|
if (!this._filterActive())
|
|
this._setDefaultList();
|
|
else
|
|
this._doSearchFilter();
|
|
|
|
if (resetPage)
|
|
this._list.page = 0;
|
|
|
|
this._displayMatchedItems(true);
|
|
|
|
this.emit('redisplayed');
|
|
},
|
|
|
|
//// Pure virtual protected methods ////
|
|
|
|
// Performs the steps needed to have the latest information about the items.
|
|
_refreshCache: function() {
|
|
throw new Error("Not implemented");
|
|
},
|
|
|
|
// Sets the list of the displayed items based on the default sorting order.
|
|
// The default sorting order is specific to each implementing class.
|
|
_setDefaultList: function() {
|
|
throw new Error("Not implemented");
|
|
},
|
|
|
|
// Compares items associated with the item ids based on the order in which the
|
|
// items should be displayed.
|
|
// Intended to be used as a compareFunction for array.sort().
|
|
// Returns an integer value indicating the result of the comparison.
|
|
_compareItems: function(itemIdA, itemIdB) {
|
|
throw new Error("Not implemented");
|
|
},
|
|
|
|
// Checks if the item info can be a match for the search string.
|
|
// Returns a boolean flag indicating if that's the case.
|
|
_isInfoMatching: function(itemInfo, search) {
|
|
throw new Error("Not implemented");
|
|
},
|
|
|
|
// Creates a display item based on itemInfo.
|
|
_createDisplayItem: function(itemInfo) {
|
|
throw new Error("Not implemented");
|
|
},
|
|
|
|
//// Private methods ////
|
|
|
|
_getSearchMatchedItems: function() {
|
|
let matchedItemsForSearch = {};
|
|
// Break the search up into terms, and search for each
|
|
// individual term. Keep track of the number of terms
|
|
// each item matched.
|
|
let terms = this._search.split(/\s+/);
|
|
for (let i = 0; i < terms.length; i++) {
|
|
let term = terms[i];
|
|
for (itemId in this._allItems) {
|
|
let item = this._allItems[itemId];
|
|
if (this._isInfoMatching(item, term)) {
|
|
let count = matchedItemsForSearch[itemId];
|
|
if (!count)
|
|
count = 0;
|
|
count += 1;
|
|
matchedItemsForSearch[itemId] = count;
|
|
}
|
|
}
|
|
}
|
|
return matchedItemsForSearch;
|
|
},
|
|
|
|
// Applies the search string to the list of items to find matches,
|
|
// and displays the matching items.
|
|
_doSearchFilter: function() {
|
|
let matchedItemsForSearch;
|
|
|
|
if (this._filterActive()) {
|
|
matchedItemsForSearch = this._getSearchMatchedItems();
|
|
} else {
|
|
matchedItemsForSearch = {};
|
|
for (let itemId in this._allItems) {
|
|
matchedItemsForSearch[itemId] = 1;
|
|
}
|
|
}
|
|
|
|
this._matchedItems = [];
|
|
for (itemId in matchedItemsForSearch) {
|
|
this._matchedItems.push(itemId);
|
|
}
|
|
this._matchedItems.sort(Lang.bind(this, function (a, b) {
|
|
let countA = matchedItemsForSearch[a];
|
|
let countB = matchedItemsForSearch[b];
|
|
if (countA > countB)
|
|
return -1;
|
|
else if (countA < countB)
|
|
return 1;
|
|
else
|
|
return this._compareItems(a, b);
|
|
}));
|
|
},
|
|
|
|
// Displays the page specified by the pageNumber argument.
|
|
_displayPage: function(pageNumber) {
|
|
this._list.page = pageNumber;
|
|
},
|
|
|
|
/*
|
|
* Updates the display control to reflect the matched items set and the page selected.
|
|
*
|
|
* resetDisplayControl - indicates if the display control should be re-created because
|
|
* the results or the space allocated for them changed. If it's false,
|
|
* the existing display control is used and only the page links are
|
|
* updated to reflect the current page selection.
|
|
*/
|
|
_updateDisplayControl: function(resetDisplayControl) {
|
|
if (resetDisplayControl) {
|
|
this.displayControl.remove_all();
|
|
let nPages = this._list.n_pages;
|
|
let pageNumber = this._list.page;
|
|
for (let i = 0; i < nPages; i++) {
|
|
let pageControl = new Link.Link({ color: (i == pageNumber) ? DISPLAY_CONTROL_SELECTED_COLOR : ITEM_DISPLAY_DESCRIPTION_COLOR,
|
|
font_name: "Sans Bold 16px",
|
|
text: (i+1) + "",
|
|
height: LABEL_HEIGHT,
|
|
reactive: (i == pageNumber) ? false : true});
|
|
this.displayControl.append(pageControl.actor, Big.BoxPackFlags.NONE);
|
|
|
|
// we use pageNumberLocalScope to get the page number right in the callback function
|
|
let pageNumberLocalScope = i;
|
|
pageControl.connect('clicked',
|
|
Lang.bind(this,
|
|
function(o, event) {
|
|
this._displayPage(pageNumberLocalScope);
|
|
}));
|
|
}
|
|
} else {
|
|
let pageControlActors = this.displayControl.get_children();
|
|
for (let i = 0; i < pageControlActors.length; i++) {
|
|
let pageControlActor = pageControlActors[i];
|
|
if (i == this._list.page) {
|
|
pageControlActor.color = DISPLAY_CONTROL_SELECTED_COLOR;
|
|
pageControlActor.reactive = false;
|
|
} else {
|
|
pageControlActor.color = ITEM_DISPLAY_DESCRIPTION_COLOR;
|
|
pageControlActor.reactive = true;
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
// Returns a display item based on its index in the ordering of the
|
|
// display children.
|
|
_findDisplayedByIndex: function(index) {
|
|
let displayedActors = this._list.get_children();
|
|
let actor = displayedActors[index];
|
|
return this._findDisplayedByActor(actor);
|
|
},
|
|
|
|
// Returns a display item based on the actor that represents it in
|
|
// the display.
|
|
_findDisplayedByActor: function(actor) {
|
|
for (itemId in this._displayedItems) {
|
|
let item = this._displayedItems[itemId];
|
|
if (item.actor == actor) {
|
|
return item;
|
|
}
|
|
}
|
|
return null;
|
|
},
|
|
|
|
// Returns and index that the actor has in the ordering of the display's
|
|
// children.
|
|
_getIndexOfDisplayedActor: function(actor) {
|
|
let children = this._list.get_children();
|
|
for (let i = 0; i < children.length; i++) {
|
|
if (children[i] == actor)
|
|
return i;
|
|
}
|
|
return -1;
|
|
},
|
|
|
|
// Selects (e.g. highlights) a display item at the provided index,
|
|
// updates this.selectedItemDetails actor, and emits 'selected' signal.
|
|
_selectIndex: function(index) {
|
|
if (this._selectedIndex != -1) {
|
|
let prev = this._findDisplayedByIndex(this._selectedIndex);
|
|
prev.markSelected(false);
|
|
// Calling destroy() gets large image previews released as quickly as
|
|
// possible, if we just removed them, they might hang around for a while
|
|
// until the actor was garbage collected.
|
|
let children = this.selectedItemDetails.get_children();
|
|
for (let i = 0; i < children.length; i++)
|
|
children[i].destroy();
|
|
|
|
this.selectedItemDetails.remove_all();
|
|
}
|
|
this._selectedIndex = index;
|
|
if (index != -1 && index < this._displayedItemsCount) {
|
|
let item = this._findDisplayedByIndex(index);
|
|
item.markSelected(true);
|
|
this.selectedItemDetails.append(item.createDetailsActor(this._availableWidthForItemDetails, this._availableHeightForItemDetails), Big.BoxPackFlags.NONE);
|
|
this.emit('selected');
|
|
}
|
|
}
|
|
};
|
|
|
|
Signals.addSignalMethods(GenericDisplay.prototype);
|