gnome-shell/js/ui/dash.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Signals = imports.signals;
const Lang = imports.lang;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Mainloop = imports.mainloop;
const AppDisplay = imports.ui.appDisplay;
const AppFavorites = imports.ui.appFavorites;
const DND = imports.ui.dnd;
const IconGrid = imports.ui.iconGrid;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const Workspace = imports.ui.workspace;
const DASH_ANIMATION_TIME = 0.2;
const DASH_ITEM_LABEL_SHOW_TIME = 0.15;
const DASH_ITEM_LABEL_HIDE_TIME = 0.1;
const DASH_ITEM_HOVER_TIMEOUT = 300;
function getAppFromSource(source) {
if (source instanceof AppDisplay.AppWellIcon) {
return source.app;
} else if (source.metaWindow) {
let tracker = Shell.WindowTracker.get_default();
return tracker.get_window_app(source.metaWindow);
} else {
return null;
}
}
// A container like StBin, but taking the child's scale into account
// when requesting a size
const DashItemContainer = new Lang.Class({
Name: 'DashItemContainer',
_init: function() {
this.actor = new Shell.GenericContainer({ style_class: 'dash-item-container' });
this.actor.connect('get-preferred-width',
Lang.bind(this, this._getPreferredWidth));
this.actor.connect('get-preferred-height',
Lang.bind(this, this._getPreferredHeight));
this.actor.connect('allocate',
Lang.bind(this, this._allocate));
this.actor._delegate = this;
this._labelText = "";
this.label = new St.Label({ style_class: 'dash-label'});
this.label.hide();
Main.layoutManager.addChrome(this.label);
this.actor.label_actor = this.label;
this.child = null;
this._childScale = 1;
this._childOpacity = 255;
this.animatingOut = false;
},
_allocate: function(actor, box, flags) {
if (this.child == null)
return;
let availWidth = box.x2 - box.x1;
let availHeight = box.y2 - box.y1;
let [minChildWidth, minChildHeight, natChildWidth, natChildHeight] =
this.child.get_preferred_size();
let [childScaleX, childScaleY] = this.child.get_scale();
let childWidth = Math.min(natChildWidth * childScaleX, availWidth);
let childHeight = Math.min(natChildHeight * childScaleY, availHeight);
let childBox = new Clutter.ActorBox();
childBox.x1 = (availWidth - childWidth) / 2;
childBox.y1 = (availHeight - childHeight) / 2;
childBox.x2 = childBox.x1 + childWidth;
childBox.y2 = childBox.y1 + childHeight;
this.child.allocate(childBox, flags);
},
_getPreferredHeight: function(actor, forWidth, alloc) {
alloc.min_size = 0;
alloc.natural_size = 0;
if (this.child == null)
return;
let [minHeight, natHeight] = this.child.get_preferred_height(forWidth);
alloc.min_size += minHeight * this.child.scale_y;
alloc.natural_size += natHeight * this.child.scale_y;
},
_getPreferredWidth: function(actor, forHeight, alloc) {
alloc.min_size = 0;
alloc.natural_size = 0;
if (this.child == null)
return;
let [minWidth, natWidth] = this.child.get_preferred_width(forHeight);
alloc.min_size = minWidth * this.child.scale_y;
alloc.natural_size = natWidth * this.child.scale_y;
},
showLabel: function() {
if (!this._labelText)
return;
this.label.set_text(this._labelText);
this.label.opacity = 0;
this.label.show();
let [stageX, stageY] = this.actor.get_transformed_position();
let itemHeight = this.actor.allocation.y2 - this.actor.allocation.y1;
let labelHeight = this.label.get_height();
let yOffset = Math.floor((itemHeight - labelHeight) / 2)
let y = stageY + yOffset;
let node = this.label.get_theme_node();
let xOffset = node.get_length('-x-offset');
let x;
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL)
x = stageX - this.label.get_width() - xOffset;
else
x = stageX + this.actor.get_width() + xOffset;
this.label.set_position(x, y);
Tweener.addTween(this.label,
{ opacity: 255,
time: DASH_ITEM_LABEL_SHOW_TIME,
transition: 'easeOutQuad',
});
},
setLabelText: function(text) {
this._labelText = text;
this.child.accessible_name = text;
},
hideLabel: function () {
Tweener.addTween(this.label,
{ opacity: 0,
time: DASH_ITEM_LABEL_HIDE_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this.label.hide();
})
});
},
setChild: function(actor) {
if (this.child == actor)
return;
this.actor.destroy_all_children();
this.child = actor;
this.actor.add_actor(this.child);
},
animateIn: function() {
if (this.child == null)
return;
this.childScale = 0;
this.childOpacity = 0;
Tweener.addTween(this,
{ childScale: 1.0,
childOpacity: 255,
time: DASH_ANIMATION_TIME,
transition: 'easeOutQuad'
});
},
destroy: function() {
if (this.label)
this.label.destroy();
this.actor.destroy();
},
animateOutAndDestroy: function() {
if (this.label)
this.label.destroy();
if (this.child == null) {
this.actor.destroy();
return;
}
this.animatingOut = true;
this.childScale = 1.0;
Tweener.addTween(this,
{ childScale: 0.0,
childOpacity: 0,
time: DASH_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this.actor.destroy();
})
});
},
set childScale(scale) {
this._childScale = scale;
if (this.child == null)
return;
this.child.set_scale_with_gravity(scale, scale,
Clutter.Gravity.CENTER);
this.actor.queue_relayout();
},
get childScale() {
return this._childScale;
},
set childOpacity(opacity) {
this._childOpacity = opacity;
if (this.child == null)
return;
this.child.set_opacity(opacity);
this.actor.queue_redraw();
},
get childOpacity() {
return this._childOpacity;
}
});
const ShowAppsIcon = new Lang.Class({
Name: 'ShowAppsIcon',
Extends: DashItemContainer,
_init: function() {
this.parent();
this.toggleButton = new St.Button({ style_class: 'show-apps',
track_hover: true,
can_focus: true,
toggle_mode: true });
this._iconActor = null;
this.icon = new IconGrid.BaseIcon(_("Show Applications"),
{ setSizeManually: true,
showLabel: false,
createIcon: Lang.bind(this, this._createIcon) });
this.toggleButton.add_actor(this.icon.actor);
this.toggleButton._delegate = this;
this.setChild(this.toggleButton);
this.setDragApp(null);
},
_createIcon: function(size) {
this._iconActor = new St.Icon({ icon_name: 'view-grid-symbolic',
icon_size: size,
style_class: 'show-apps-icon',
track_hover: true });
return this._iconActor;
},
_canRemoveApp: function(app) {
if (app == null)
return false;
let id = app.get_id();
let isFavorite = AppFavorites.getAppFavorites().isFavorite(id);
return isFavorite;
},
setDragApp: function(app) {
let canRemove = this._canRemoveApp(app);
this.toggleButton.set_hover(canRemove);
if (this._iconActor)
this._iconActor.set_hover(canRemove);
if (canRemove)
this.setLabelText(_("Remove from Favorites"));
else
this.setLabelText(_("Show Applications"));
},
handleDragOver: function(source, actor, x, y, time) {
let app = getAppFromSource(source);
if (app == null)
return DND.DragMotionResult.NO_DROP;
let id = app.get_id();
let isFavorite = AppFavorites.getAppFavorites().isFavorite(id);
if (!isFavorite)
return DND.DragMotionResult.NO_DROP;
return DND.DragMotionResult.MOVE_DROP;
},
acceptDrop: function(source, actor, x, y, time) {
let app = getAppFromSource(source);
if (app == null)
return false;
let id = app.get_id();
Meta.later_add(Meta.LaterType.BEFORE_REDRAW, Lang.bind(this,
function () {
AppFavorites.getAppFavorites().removeFavorite(id);
return false;
}));
return true;
}
});
const DragPlaceholderItem = new Lang.Class({
Name: 'DragPlaceholderItem',
Extends: DashItemContainer,
_init: function() {
this.parent();
this.setChild(new St.Bin({ style_class: 'placeholder' }));
}
});
const DashActor = new Lang.Class({
Name: 'DashActor',
Extends: St.Widget,
_init: function() {
let layout = new Clutter.BoxLayout({ orientation: Clutter.Orientation.VERTICAL });
this.parent({ name: 'dash',
layout_manager: layout,
clip_to_allocation: true });
},
vfunc_allocate: function(box, flags) {
let contentBox = this.get_theme_node().get_content_box(box);
let availWidth = contentBox.x2 - contentBox.x1;
this.set_allocation(box, flags);
let [appIcons, showAppsButton] = this.get_children();
let [showAppsMinHeight, showAppsNatHeight] = showAppsButton.get_preferred_height(availWidth);
let childBox = new Clutter.ActorBox();
childBox.x1 = contentBox.x1;
childBox.y1 = contentBox.y1;
childBox.x2 = contentBox.x2;
childBox.y2 = contentBox.y2 - showAppsNatHeight;
appIcons.allocate(childBox, flags);
childBox.y1 = contentBox.y2 - showAppsNatHeight;
childBox.y2 = contentBox.y2;
showAppsButton.allocate(childBox, flags);
}
});
const Dash = new Lang.Class({
Name: 'Dash',
_init : function() {
this._maxHeight = -1;
this.iconSize = 64;
this._shownInitially = false;
this._dragPlaceholder = null;
this._dragPlaceholderPos = -1;
this._animatingPlaceholdersCount = 0;
this._showLabelTimeoutId = 0;
this._resetHoverTimeoutId = 0;
this._labelShowing = false;
this._container = new DashActor();
this._box = new St.BoxLayout({ vertical: true,
clip_to_allocation: true });
this._box._delegate = this;
this._container.add_actor(this._box);
this._showAppsIcon = new ShowAppsIcon();
this._showAppsIcon.icon.setIconSize(this.iconSize);
this._hookUpLabel(this._showAppsIcon);
this.showAppsButton = this._showAppsIcon.toggleButton;
this._container.add_actor(this._showAppsIcon.actor);
this.actor = new St.Bin({ child: this._container });
this.actor.connect('notify::height', Lang.bind(this,
function() {
if (this._maxHeight != this.actor.height)
this._queueRedisplay();
this._maxHeight = this.actor.height;
}));
this._workId = Main.initializeDeferredWork(this._box, Lang.bind(this, this._redisplay));
this._appSystem = Shell.AppSystem.get_default();
this._appSystem.connect('installed-changed', Lang.bind(this, this._queueRedisplay));
AppFavorites.getAppFavorites().connect('changed', Lang.bind(this, this._queueRedisplay));
this._appSystem.connect('app-state-changed', Lang.bind(this, this._queueRedisplay));
Main.overview.connect('item-drag-begin',
Lang.bind(this, this._onDragBegin));
Main.overview.connect('item-drag-end',
Lang.bind(this, this._onDragEnd));
Main.overview.connect('item-drag-cancelled',
Lang.bind(this, this._onDragCancelled));
Main.overview.connect('window-drag-begin',
Lang.bind(this, this._onDragBegin));
Main.overview.connect('window-drag-cancelled',
Lang.bind(this, this._onDragCancelled));
Main.overview.connect('window-drag-end',
Lang.bind(this, this._onDragEnd));
},
_onDragBegin: function() {
this._dragCancelled = false;
this._dragMonitor = {
dragMotion: Lang.bind(this, this._onDragMotion)
};
DND.addDragMonitor(this._dragMonitor);
},
_onDragCancelled: function() {
this._dragCancelled = true;
this._endDrag();
},
_onDragEnd: function() {
if (this._dragCancelled)
return;
this._endDrag();
},
_endDrag: function() {
this._clearDragPlaceholder();
this._showAppsIcon.setDragApp(null);
DND.removeDragMonitor(this._dragMonitor);
},
_onDragMotion: function(dragEvent) {
let app = getAppFromSource(dragEvent.source);
if (app == null)
return DND.DragMotionResult.CONTINUE;
let showAppsHovered =
this._showAppsIcon.actor.contains(dragEvent.targetActor);
if (!this._box.contains(dragEvent.targetActor) || showAppsHovered)
this._clearDragPlaceholder();
if (showAppsHovered)
this._showAppsIcon.setDragApp(app);
else
this._showAppsIcon.setDragApp(null);
return DND.DragMotionResult.CONTINUE;
},
_appIdListToHash: function(apps) {
let ids = {};
for (let i = 0; i < apps.length; i++)
ids[apps[i].get_id()] = apps[i];
return ids;
},
_queueRedisplay: function () {
Main.queueDeferredWork(this._workId);
},
_hookUpLabel: function(item) {
item.child.connect('notify::hover', Lang.bind(this, function() {
this._onHover(item);
}));
Main.overview.connect('hiding', Lang.bind(this, function() {
this._labelShowing = false;
item.hideLabel();
}));
},
_createAppItem: function(app) {
let appIcon = new AppDisplay.AppWellIcon(app,
{ setSizeManually: true,
showLabel: false });
appIcon._draggable.connect('drag-begin',
Lang.bind(this, function() {
appIcon.actor.opacity = 50;
}));
appIcon._draggable.connect('drag-end',
Lang.bind(this, function() {
appIcon.actor.opacity = 255;
}));
appIcon.connect('menu-state-changed',
Lang.bind(this, function(appIcon, opened) {
this._itemMenuStateChanged(item, opened);
}));
let item = new DashItemContainer();
item.setChild(appIcon.actor);
// Override default AppWellIcon label_actor, now the
// accessible_name is set at DashItemContainer.setLabelText
appIcon.actor.label_actor = null;
item.setLabelText(app.get_name());
appIcon.icon.setIconSize(this.iconSize);
this._hookUpLabel(item);
return item;
},
_itemMenuStateChanged: function(item, opened) {
// When the menu closes, it calls sync_hover, which means
// that the notify::hover handler does everything we need to.
if (opened) {
if (this._showLabelTimeoutId > 0) {
Mainloop.source_remove(this._showLabelTimeoutId);
this._showLabelTimeoutId = 0;
}
item.hideLabel();
}
},
_onHover: function (item) {
if (item.child.get_hover()) {
if (this._showLabelTimeoutId == 0) {
let timeout = this._labelShowing ? 0 : DASH_ITEM_HOVER_TIMEOUT;
this._showLabelTimeoutId = Mainloop.timeout_add(timeout,
Lang.bind(this, function() {
this._labelShowing = true;
item.showLabel();
return false;
}));
if (this._resetHoverTimeoutId > 0) {
Mainloop.source_remove(this._resetHoverTimeoutId);
this._resetHoverTimeoutId = 0;
}
}
} else {
if (this._showLabelTimeoutId > 0)
Mainloop.source_remove(this._showLabelTimeoutId);
this._showLabelTimeoutId = 0;
item.hideLabel();
if (this._labelShowing) {
this._resetHoverTimeoutId = Mainloop.timeout_add(DASH_ITEM_HOVER_TIMEOUT,
Lang.bind(this, function() {
this._labelShowing = false;
return false;
}));
}
}
},
_adjustIconSize: function() {
// For the icon size, we only consider children which are "proper"
// icons (i.e. ignoring drag placeholders) and which are not
// animating out (which means they will be destroyed at the end of
// the animation)
let iconChildren = this._box.get_children().filter(function(actor) {
return actor._delegate.child &&
actor._delegate.child._delegate &&
actor._delegate.child._delegate.icon &&
!actor._delegate.animatingOut;
});
iconChildren.push(this._showAppsIcon.actor);
if (this._maxHeight == -1)
return;
let themeNode = this._container.get_theme_node();
let maxAllocation = new Clutter.ActorBox({ x1: 0, y1: 0,
x2: 42 /* whatever */,
y2: this._maxHeight });
let maxContent = themeNode.get_content_box(maxAllocation);
let availHeight = maxContent.y2 - maxContent.y1;
let spacing = themeNode.get_length('spacing');
let firstIcon = iconChildren[0]._delegate.child._delegate.icon;
let minHeight, natHeight;
// Enforce the current icon size during the size request if
// the icon is animating
if (firstIcon._animating) {
let [currentWidth, currentHeight] = firstIcon.icon.get_size();
firstIcon.icon.set_size(this.iconSize, this.iconSize);
[minHeight, natHeight] = iconChildren[0].get_preferred_height(-1);
firstIcon.icon.set_size(currentWidth, currentHeight);
} else {
[minHeight, natHeight] = iconChildren[0].get_preferred_height(-1);
}
// Subtract icon padding and box spacing from the available height
availHeight -= iconChildren.length * (natHeight - this.iconSize) +
(iconChildren.length - 1) * spacing;
let availSize = availHeight / iconChildren.length;
let iconSizes = [ 16, 22, 24, 32, 48, 64 ];
let newIconSize = 16;
for (let i = 0; i < iconSizes.length; i++) {
if (iconSizes[i] < availSize)
newIconSize = iconSizes[i];
}
if (newIconSize == this.iconSize)
return;
let oldIconSize = this.iconSize;
this.iconSize = newIconSize;
this.emit('icon-size-changed');
let scale = oldIconSize / newIconSize;
for (let i = 0; i < iconChildren.length; i++) {
let icon = iconChildren[i]._delegate.child._delegate.icon;
// Set the new size immediately, to keep the icons' sizes
// in sync with this.iconSize
icon.setIconSize(this.iconSize);
// Don't animate the icon size change when the overview
// is transitioning, not visible or when initially filling
// the dash
if (!Main.overview.visible || Main.overview.animationInProgress ||
!this._shownInitially)
continue;
let [targetWidth, targetHeight] = icon.icon.get_size();
// Scale the icon's texture to the previous size and
// tween to the new size
icon.icon.set_size(icon.icon.width * scale,
icon.icon.height * scale);
icon._animating = true;
Tweener.addTween(icon.icon,
{ width: targetWidth,
height: targetHeight,
time: DASH_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: function() {
icon._animating = false;
}
});
}
},
_redisplay: function () {
let favorites = AppFavorites.getAppFavorites().getFavoriteMap();
let running = this._appSystem.get_running();
let children = this._box.get_children().filter(function(actor) {
return actor._delegate.child &&
actor._delegate.child._delegate &&
actor._delegate.child._delegate.app;
});
// Apps currently in the dash
let oldApps = children.map(function(actor) {
return actor._delegate.child._delegate.app;
});
// Apps supposed to be in the dash
let newApps = [];
for (let id in favorites)
newApps.push(favorites[id]);
for (let i = 0; i < running.length; i++) {
let app = running[i];
if (app.get_id() in favorites)
continue;
newApps.push(app);
}
// Figure out the actual changes to the list of items; we iterate
// over both the list of items currently in the dash and the list
// of items expected there, and collect additions and removals.
// Moves are both an addition and a removal, where the order of
// the operations depends on whether we encounter the position
// where the item has been added first or the one from where it
// was removed.
// There is an assumption that only one item is moved at a given
// time; when moving several items at once, everything will still
// end up at the right position, but there might be additional
// additions/removals (e.g. it might remove all the launchers
// and add them back in the new order even if a smaller set of
// additions and removals is possible).
// If above assumptions turns out to be a problem, we might need
// to use a more sophisticated algorithm, e.g. Longest Common
// Subsequence as used by diff.
let addedItems = [];
let removedActors = [];
let newIndex = 0;
let oldIndex = 0;
while (newIndex < newApps.length || oldIndex < oldApps.length) {
// No change at oldIndex/newIndex
if (oldApps[oldIndex] == newApps[newIndex]) {
oldIndex++;
newIndex++;
continue;
}
// App removed at oldIndex
if (oldApps[oldIndex] &&
newApps.indexOf(oldApps[oldIndex]) == -1) {
removedActors.push(children[oldIndex]);
oldIndex++;
continue;
}
// App added at newIndex
if (newApps[newIndex] &&
oldApps.indexOf(newApps[newIndex]) == -1) {
addedItems.push({ app: newApps[newIndex],
item: this._createAppItem(newApps[newIndex]),
pos: newIndex });
newIndex++;
continue;
}
// App moved
let insertHere = newApps[newIndex + 1] &&
newApps[newIndex + 1] == oldApps[oldIndex];
let alreadyRemoved = removedActors.reduce(function(result, actor) {
let removedApp = actor._delegate.child._delegate.app;
return result || removedApp == newApps[newIndex];
}, false);
if (insertHere || alreadyRemoved) {
let newItem = this._createAppItem(newApps[newIndex]);
addedItems.push({ app: newApps[newIndex],
item: newItem,
pos: newIndex + removedActors.length });
newIndex++;
} else {
removedActors.push(children[oldIndex]);
oldIndex++;
}
}
for (let i = 0; i < addedItems.length; i++)
this._box.insert_child_at_index(addedItems[i].item.actor,
addedItems[i].pos);
for (let i = 0; i < removedActors.length; i++) {
let item = removedActors[i]._delegate;
// Don't animate item removal when the overview is transitioning
// or hidden
if (Main.overview.visible && !Main.overview.animationInProgress)
item.animateOutAndDestroy();
else
item.destroy();
}
this._adjustIconSize();
// Skip animations on first run when adding the initial set
// of items, to avoid all items zooming in at once
if (!this._shownInitially) {
this._shownInitially = true;
return;
}
// Don't animate item addition when the overview is transitioning
// or hidden
if (!Main.overview.visible || Main.overview.animationInProgress)
return;
for (let i = 0; i < addedItems.length; i++)
addedItems[i].item.animateIn();
},
_clearDragPlaceholder: function() {
if (this._dragPlaceholder) {
this._dragPlaceholder.animateOutAndDestroy();
this._dragPlaceholder = null;
this._dragPlaceholderPos = -1;
}
},
handleDragOver : function(source, actor, x, y, time) {
let app = getAppFromSource(source);
// Don't allow favoriting of transient apps
Kill off ShellAppInfo, move into ShellApp This dramatically thins down and sanitizes the application code. The ShellAppSystem changes in a number of ways: * Preferences are special cased more explicitly; they aren't apps, they're shortcuts for an app), and we don't have many of them, so don't need e.g. the optimizations in ShellAppSystem for searching. * get_app() changes to lookup_app() and returns null if an app isn't found. The semantics where it tried to find the .desktop file if we didn't know about it were just broken; I am pretty sure no caller needs this, and if they do we'll fix them. * ShellAppSystem maintains two indexes on apps (by desktop file id and by GMenuTreeEntry), but is no longer in the business of dealing with GMenuTree as far as hierarchy and categories go. That is moved up into js/ui/appDisplay.js. Actually, it flattens both apps and settings. Also, ShellWindowTracker is now the sole reference-owner for window-backed apps. We still do the weird "window:0x1234beef" id for these apps, but a reference is not stored in ShellAppSystem. The js/ui/appDisplay.js code is rewritten, and sucks a lot less. Variable names are clearer: _apps -> _appIcons _filterApp -> _visibleApps _filters -> _categoryBox Similarly for function names. We no longer call (for every app) a recursive lookup in GMenuTree to see if it's in a particular section on every category switch; it's all cached. NOTE - this intentionally reverts the incremental loading code from commit 7813c5b93f6bcde8c4beae286e82bfc472b2b656. It's fast enough here without that. https://bugzilla.gnome.org/show_bug.cgi?id=648149
2011-04-21 13:35:01 -04:00
if (app == null || app.is_window_backed())
return DND.DragMotionResult.NO_DROP;
let favorites = AppFavorites.getAppFavorites().getFavorites();
let numFavorites = favorites.length;
let favPos = favorites.indexOf(app);
let children = this._box.get_children();
let numChildren = children.length;
let boxHeight = this._box.height;
// Keep the placeholder out of the index calculation; assuming that
// the remove target has the same size as "normal" items, we don't
// need to do the same adjustment there.
if (this._dragPlaceholder) {
boxHeight -= this._dragPlaceholder.actor.height;
numChildren--;
}
let pos = Math.floor(y * numChildren / boxHeight);
if (pos != this._dragPlaceholderPos && pos <= numFavorites && this._animatingPlaceholdersCount == 0) {
this._dragPlaceholderPos = pos;
// Don't allow positioning before or after self
if (favPos != -1 && (pos == favPos || pos == favPos + 1)) {
if (this._dragPlaceholder) {
this._dragPlaceholder.animateOutAndDestroy();
this._animatingPlaceholdersCount++;
this._dragPlaceholder.actor.connect('destroy',
Lang.bind(this, function() {
this._animatingPlaceholdersCount--;
}));
}
this._dragPlaceholder = null;
return DND.DragMotionResult.CONTINUE;
}
// If the placeholder already exists, we just move
// it, but if we are adding it, expand its size in
// an animation
let fadeIn;
if (this._dragPlaceholder) {
this._dragPlaceholder.actor.destroy();
fadeIn = false;
} else {
fadeIn = true;
}
this._dragPlaceholder = new DragPlaceholderItem();
this._dragPlaceholder.child.set_width (this.iconSize);
this._dragPlaceholder.child.set_height (this.iconSize / 2);
this._box.insert_child_at_index(this._dragPlaceholder.actor,
this._dragPlaceholderPos);
if (fadeIn)
this._dragPlaceholder.animateIn();
}
// Remove the drag placeholder if we are not in the
// "favorites zone"
if (pos > numFavorites && this._dragPlaceholder) {
this._clearDragPlaceholder();
}
if (!this._dragPlaceholder)
return DND.DragMotionResult.NO_DROP;
let srcIsFavorite = (favPos != -1);
if (srcIsFavorite)
return DND.DragMotionResult.MOVE_DROP;
return DND.DragMotionResult.COPY_DROP;
},
// Draggable target interface
acceptDrop : function(source, actor, x, y, time) {
let app = getAppFromSource(source);
// Don't allow favoriting of transient apps
Kill off ShellAppInfo, move into ShellApp This dramatically thins down and sanitizes the application code. The ShellAppSystem changes in a number of ways: * Preferences are special cased more explicitly; they aren't apps, they're shortcuts for an app), and we don't have many of them, so don't need e.g. the optimizations in ShellAppSystem for searching. * get_app() changes to lookup_app() and returns null if an app isn't found. The semantics where it tried to find the .desktop file if we didn't know about it were just broken; I am pretty sure no caller needs this, and if they do we'll fix them. * ShellAppSystem maintains two indexes on apps (by desktop file id and by GMenuTreeEntry), but is no longer in the business of dealing with GMenuTree as far as hierarchy and categories go. That is moved up into js/ui/appDisplay.js. Actually, it flattens both apps and settings. Also, ShellWindowTracker is now the sole reference-owner for window-backed apps. We still do the weird "window:0x1234beef" id for these apps, but a reference is not stored in ShellAppSystem. The js/ui/appDisplay.js code is rewritten, and sucks a lot less. Variable names are clearer: _apps -> _appIcons _filterApp -> _visibleApps _filters -> _categoryBox Similarly for function names. We no longer call (for every app) a recursive lookup in GMenuTree to see if it's in a particular section on every category switch; it's all cached. NOTE - this intentionally reverts the incremental loading code from commit 7813c5b93f6bcde8c4beae286e82bfc472b2b656. It's fast enough here without that. https://bugzilla.gnome.org/show_bug.cgi?id=648149
2011-04-21 13:35:01 -04:00
if (app == null || app.is_window_backed()) {
return false;
}
let id = app.get_id();
let favorites = AppFavorites.getAppFavorites().getFavoriteMap();
let srcIsFavorite = (id in favorites);
let favPos = 0;
let children = this._box.get_children();
for (let i = 0; i < this._dragPlaceholderPos; i++) {
if (this._dragPlaceholder &&
children[i] == this._dragPlaceholder.actor)
continue;
let childId = children[i]._delegate.child._delegate.app.get_id();
if (childId == id)
continue;
if (childId in favorites)
favPos++;
}
// No drag placeholder means we don't wan't to favorite the app
// and we are dragging it to its original position
if (!this._dragPlaceholder)
return true;
Meta.later_add(Meta.LaterType.BEFORE_REDRAW, Lang.bind(this,
function () {
let appFavorites = AppFavorites.getAppFavorites();
if (srcIsFavorite)
appFavorites.moveFavoriteToPos(id, favPos);
else
appFavorites.addFavoriteAtPos(id, favPos);
return false;
}));
return true;
}
});
Signals.addSignalMethods(Dash.prototype);