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gnome-shell/js/ui/workspacesView.js
Milan Bouchet-Valat 2799327c84 Migrate to GSettings 
Use GSettings for all Shell configuration. GConf is kept to read
configuration from external programs (Metacity, Nautilus and Magnifier),
but ShellGConf is removed because it's mostly useless for the few calls
we still have. Also get rid of unused GConf code in ShellAppSystem.

A basic GConf schema is still used to override Metacity defaults and
configure Magnifier in a system-wide fashion. GConf is also used as
GSettings backend via the GSETTINGS_BACKEND environment variable.
All of this will be removed when these programs have been ported
to GSettings and able to use dconf.

GLib 2.25.9 is required. Schemas are converted to the new XML format,
and compiled at build time in data/ so that the Shell can be run from
the source tree. This also requires setting the GSETTINGS_SCHEMA_DIR
environment variable both when running installed or from source tree,
in src/gnome-shell.in and src/gnome-shell-clock-preferences.in.

https://bugzilla.gnome.org/show_bug.cgi?id=617917
2010-06-18 20:27:41 +02:00

1687 lines
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JavaScript
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/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Clutter = imports.gi.Clutter;
const GdkPixbuf = imports.gi.GdkPixbuf;
const Gdk = imports.gi.Gdk;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Pango = imports.gi.Pango;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Signals = imports.signals;
const Gettext = imports.gettext.domain('gnome-shell');
const _ = Gettext.gettext;
const DND = imports.ui.dnd;
const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const Panel = imports.ui.panel;
const Tweener = imports.ui.tweener;
const Workspace = imports.ui.workspace;
const WORKSPACE_SWITCH_TIME = 0.25;
// Note that mutter has a compile-time limit of 36
const MAX_WORKSPACES = 16;
// The values here are also used for GSettings, and the key and value
// names must match
const WorkspacesViewType = {
SINGLE: 'single',
GRID: 'grid'
};
const WORKSPACES_VIEW_KEY = 'workspaces-view';
const WORKSPACE_DRAGGING_SCALE = 0.85;
const WORKSPACE_SHADOW_SCALE = (1 - WORKSPACE_DRAGGING_SCALE) / 2;
function GenericWorkspacesView(width, height, x, y, workspaces) {
this._init(width, height, x, y, workspaces);
}
GenericWorkspacesView.prototype = {
_init: function(width, height, x, y, workspaces) {
this.actor = new St.Group({ style_class: 'workspaces' });
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this.actor.connect('style-changed', Lang.bind(this,
function() {
let node = this.actor.get_theme_node();
let [a, spacing] = node.get_length('spacing', false);
this._spacing = spacing;
if (Main.overview.animationInProgress)
this._computeWorkspacePositions();
else
this._transitionWorkspaces();
}));
this._width = width;
this._height = height;
this._x = x;
this._y = y;
this._spacing = 0;
this._windowSelectionAppId = null;
this._highlightWindow = null;
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
this._workspaces = workspaces;
// Add workspace actors
for (let w = 0; w < global.screen.n_workspaces; w++)
this._workspaces[w].actor.reparent(this.actor);
this._workspaces[activeWorkspaceIndex].actor.raise_top();
// Position/scale the desktop windows and their children after the
// workspaces have been created. This cannot be done first because
// window movement depends on the Workspaces object being accessible
// as an Overview member.
this._overviewShowingId =
Main.overview.connect('showing',
Lang.bind(this, function() {
this._onRestacked();
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomToOverview();
}));
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace',
Lang.bind(this, this._activeWorkspaceChanged));
this._restackedNotifyId =
global.screen.connect('restacked',
Lang.bind(this, this._onRestacked));
},
_lookupWorkspaceForMetaWindow: function (metaWindow) {
for (let i = 0; i < this._workspaces.length; i++) {
if (this._workspaces[i].containsMetaWindow(metaWindow))
return this._workspaces[i];
}
return null;
},
_lookupCloneForMetaWindow: function (metaWindow) {
for (let i = 0; i < this._workspaces.length; i++) {
let clone = this._workspaces[i].lookupCloneForMetaWindow(metaWindow);
if (clone)
return clone;
}
return null;
},
setHighlightWindow: function (metaWindow) {
// Looping over all workspaces is easier than keeping track of the last
// highlighted window while trying to handle the window or workspace possibly
// going away.
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].setHighlightWindow(null);
}
if (metaWindow != null) {
let workspace = this._lookupWorkspaceForMetaWindow(metaWindow);
workspace.setHighlightWindow(metaWindow);
}
},
_clearApplicationWindowSelection: function(reposition) {
if (this._windowSelectionAppId == null)
return;
this._windowSelectionAppId = null;
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].setLightboxMode(false);
this._workspaces[i].setShowOnlyWindows(null, reposition);
}
},
/**
* setApplicationWindowSelection:
* @appid: Application identifier string
*
* Enter a mode which shows only the windows owned by the
* given application, and allow highlighting of a specific
* window with setHighlightWindow().
*/
setApplicationWindowSelection: function (appId) {
if (appId == null) {
this._clearApplicationWindowSelection(true);
return;
}
if (appId == this._windowSelectionAppId)
return;
this._windowSelectionAppId = appId;
let appSys = Shell.AppSystem.get_default();
let showOnlyWindows = {};
let app = appSys.get_app(appId);
let windows = app.get_windows();
for (let i = 0; i < windows.length; i++) {
showOnlyWindows[windows[i]] = 1;
}
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].setLightboxMode(true);
this._workspaces[i].setShowOnlyWindows(showOnlyWindows, true);
}
},
hide: function() {
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let activeWorkspace = this._workspaces[activeWorkspaceIndex];
if (this._windowSelectionAppId != null)
this._clearApplicationWindowSelection(false);
activeWorkspace.actor.raise_top();
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomFromOverview();
},
destroy: function() {
this.actor.destroy();
},
_onDestroy: function() {
Main.overview.disconnect(this._overviewShowingId);
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
global.screen.disconnect(this._restackedNotifyId);
},
getScale: function() {
return this._workspaces[0].scale;
},
_onRestacked: function() {
let stack = global.get_windows();
let stackIndices = {};
for (let i = 0; i < stack.length; i++) {
// Use the stable sequence for an integer to use as a hash key
stackIndices[stack[i].get_meta_window().get_stable_sequence()] = i;
}
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].syncStacking(stackIndices);
},
// Handles a drop onto the (+) button; assumes the new workspace
// has already been added
acceptNewWorkspaceDrop: function(source, dropActor, x, y, time) {
return this._workspaces[this._workspaces.length - 1].acceptDrop(source, dropActor, x, y, time);
},
// Get the grid position of the active workspace.
getActiveWorkspacePosition: function() {
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let activeWorkspace = this._workspaces[activeWorkspaceIndex];
return [activeWorkspace.gridX, activeWorkspace.gridY];
},
createControllerBar: function() {
throw new Error('Not implemented');
},
canAddWorkspace: function() {
return global.screen.n_workspaces < MAX_WORKSPACES;
},
addWorkspace: function() {
if (!this.canAddWorkspace()) {
Main.overview.infoBar.setMessage(_("Can't add a new workspace because maximum workspaces limit has been reached."));
return null;
}
return global.screen.append_new_workspace(false, global.get_current_time());
},
_getWorkspaceIndexToRemove: function() {
throw new Error('Not implemented');
},
canRemoveWorkspace: function() {
return this._getWorkspaceIndexToRemove() > 0;
},
removeWorkspace: function() {
if (!this.canRemoveWorkspace()) {
Main.overview.infoBar.setMessage(_("Can't remove the first workspace."));
return;
}
let index = this._getWorkspaceIndexToRemove();
let metaWorkspace = this._workspaces[index].metaWorkspace;
global.screen.remove_workspace(metaWorkspace,
global.get_current_time());
},
updateWorkspaces: function() {
throw new Error('Not implemented');
},
_transitionWorkspaces: function() {
throw new Error('Not implemented');
},
_computeWorkspacePositions: function() {
throw new Error('Not implemented');
},
_activeWorkspaceChanged: function() {
throw new Error('Not implemented');
},
_acceptNewWorkspaceDrop: function(source, dropActor, x, y, time) {
let ws = this.addWorkspace();
if (ws == null)
return false;
return this.acceptNewWorkspaceDrop(source, dropActor, x, y, time);
}
};
function MosaicView(width, height, x, y, workspaces) {
this._init(width, height, x, y, workspaces);
}
MosaicView.prototype = {
__proto__: GenericWorkspacesView.prototype,
_init: function(width, height, x, y, workspaces) {
GenericWorkspacesView.prototype._init.call(this, width, height, x, y, workspaces);
this.actor.add_style_class_name('mosaic');
this.actor.set_clip(x - Workspace.FRAME_SIZE,
y - Workspace.FRAME_SIZE,
width + 2 * Workspace.FRAME_SIZE,
height + 2 * Workspace.FRAME_SIZE);
this._workspaces[global.screen.get_active_workspace_index()].setSelected(true);
},
// Assign grid positions to workspaces. We can't just do a simple
// row-major or column-major numbering, because we don't want the
// existing workspaces to get rearranged when we add a row or
// column. So we alternate between adding to rows and adding to
// columns. (So, eg, when going from a 2x2 grid of 4 workspaces to
// a 3x2 grid of 5 workspaces, the 4 existing workspaces stay
// where they are, and the 5th one is added to the end of the
// first row.)
//
// FIXME: need to make the metacity internal layout agree with this!
_computeWorkspacePositions: function() {
let gridWidth = Math.ceil(Math.sqrt(this._workspaces.length));
let gridHeight = Math.ceil(this._workspaces.length / gridWidth);
// adjust vertical spacing so workspaces can preserve their aspect
// ratio without exceeding this._height
let verticalSpacing = this._spacing * this._height / this._width;
let wsWidth = (this._width - (gridWidth - 1) * this._spacing) / gridWidth;
let wsHeight = (this._height - (gridHeight - 1) * verticalSpacing) / gridHeight;
let scale = wsWidth / global.screen_width;
let span = 1, n = 0, row = 0, col = 0, horiz = true;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
workspace.gridRow = row;
workspace.gridCol = col;
workspace.gridX = this._x + workspace.gridCol * (wsWidth + this._spacing);
workspace.gridY = this._y + workspace.gridRow * (wsHeight + verticalSpacing);
workspace.scale = scale;
if (horiz) {
col++;
if (col == span) {
row = 0;
horiz = false;
}
} else {
row++;
if (row == span) {
col = 0;
horiz = true;
span++;
}
}
}
},
_transitionWorkspaces: function() {
// update workspace parameters
this._computeWorkspacePositions();
let active = global.screen.get_active_workspace_index();
let activeWorkspace = this._workspaces[active];
// scale is the factor needed to translate from the new scale
// (this view) to the currently active scale (previous view)
let scale = this._workspaces[0].actor.scale_x / activeWorkspace.scale;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
let originX, originY;
let dx, dy;
// The correct transition would be a straightforward animation
// of each workspace's old position/scale to the new one;
// however, this looks overly busy, so we only use a zoom effect.
// Unfortunately this implies that we cannot pretend to not knowing
// the other view's layout at this point:
// We position the workspaces in the grid, which we scale up so
// that the active workspace fills the viewport.
dx = workspace.gridX - activeWorkspace.gridX;
dy = workspace.gridY - activeWorkspace.gridY;
originX = this._x + scale * dx;
originY = this._y + scale * dy;
workspace.actor.set_position(originX, originY);
workspace.positionWindows(Workspace.WindowPositionFlags.ANIMATE);
workspace.setSelected(false);
workspace.hideWindowsOverlays();
Tweener.addTween(workspace.actor,
{ x: workspace.gridX,
y: workspace.gridY,
scale_x: workspace.scale,
scale_y: workspace.scale,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: function() {
workspace.zoomToOverview(false);
if (workspace.metaWorkspace.index() == active)
workspace.setSelected(true);
}});
}
},
updateWorkspaces: function(oldNumWorkspaces, newNumWorkspaces, lostWorkspaces) {
let oldScale = this._workspaces[0].scale;
let oldGridWidth = Math.ceil(Math.sqrt(oldNumWorkspaces));
let oldGridHeight = Math.ceil(oldNumWorkspaces / oldGridWidth);
// Add actors
if (newNumWorkspaces > oldNumWorkspaces)
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++)
this.actor.add_actor(this._workspaces[w].actor);
// Figure out the new layout
this._computeWorkspacePositions();
let newScale = this._workspaces[0].scale;
let newGridWidth = Math.ceil(Math.sqrt(newNumWorkspaces));
let newGridHeight = Math.ceil(newNumWorkspaces / newGridWidth);
if (newGridWidth != oldGridWidth || newGridHeight != oldGridHeight) {
// We need to resize/move the existing workspaces/windows
let existingWorkspaces = Math.min(oldNumWorkspaces, newNumWorkspaces);
for (let w = 0; w < existingWorkspaces; w++)
this._workspaces[w].resizeToGrid(oldScale);
}
if (newScale != oldScale) {
// The workspace scale affects window size/positioning because we clamp
// window size to a 1:1 ratio and never scale them up
let existingWorkspaces = Math.min(oldNumWorkspaces, newNumWorkspaces);
for (let w = 0; w < existingWorkspaces; w++)
this._workspaces[w].positionWindows(Workspace.WindowPositionFlags.ANIMATE);
}
if (newNumWorkspaces > oldNumWorkspaces) {
// Slide new workspaces in from offscreen
// New workspaces can contain windows.
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
this._workspaces[w].positionWindows(0);
this._workspaces[w].slideIn(oldScale);
}
} else {
// Slide old workspaces out
for (let w = 0; w < lostWorkspaces.length; w++) {
let workspace = lostWorkspaces[w];
workspace.slideOut(function () { workspace.destroy(); });
}
}
// Reset the selection state; if we went from > 1 workspace to 1,
// this has the side effect of removing the frame border
let activeIndex = global.screen.get_active_workspace_index();
this._workspaces[activeIndex].setSelected(true);
},
_activeWorkspaceChanged: function(wm, from, to, direction) {
this._workspaces[from].setSelected(false);
this._workspaces[to].setSelected(true);
},
createControllerBar: function() {
return null;
},
_getWorkspaceIndexToRemove: function() {
return this._workspaces.length - 1;
}
};
function NewWorkspaceArea() {
this._init();
}
NewWorkspaceArea.prototype = {
_init: function() {
let width = Math.ceil(global.screen_width * WORKSPACE_SHADOW_SCALE);
this.actor = new Clutter.Group({ width: width,
height: global.screen_height,
x: global.screen_width });
this._child1 = new St.Bin({ style_class: 'new-workspace-area',
width: width,
height: global.screen_height });
this._child2 = new St.Bin({ style_class: 'new-workspace-area-internal',
width: width,
height: global.screen_height,
reactive: true });
this.actor.add_actor(this._child1);
this.actor.add_actor(this._child2);
},
setStyle: function(isHover) {
this._child1.set_hover(isHover);
}
};
function WorkspaceIndicator(activateWorkspace, workspaceAcceptDrop, scrollEventCb) {
this._init(activateWorkspace, workspaceAcceptDrop, scrollEventCb);
}
WorkspaceIndicator.prototype = {
_init: function(activateWorkspace, workspaceAcceptDrop, scrollEventCb) {
this._activateWorkspace = activateWorkspace;
this._workspaceAcceptDrop = workspaceAcceptDrop;
this._scrollEventCb = scrollEventCb;
let actor = new St.Bin({ style_class: 'panel-button' });
this._indicatorsPanel = new Shell.GenericContainer();
this._indicatorsPanel.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
this._indicatorsPanel.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
this._indicatorsPanel.connect('allocate', Lang.bind(this, this._allocate));
this._indicatorsPanel.clip_to_allocation = true;
actor.set_child(this._indicatorsPanel);
actor.set_alignment(St.Align.MIDDLE, St.Align.MIDDLE);
this._indicatorsPanel.hide();
actor.connect('destroy', Lang.bind(this, this._onDestroy));
let workId = Main.initializeDeferredWork(actor, Lang.bind(this, this._workspacesChanged));
this._nWorkspacesNotifyId =
global.screen.connect('notify::n-workspaces', function() {
Main.queueDeferredWork(workId);
});
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace', function() {
Main.queueDeferredWork(workId);
});
this.actor = actor;
},
_workspacesChanged: function() {
let active = global.screen.get_active_workspace_index();
let n = global.screen.n_workspaces;
if (n > 1)
this._indicatorsPanel.show();
else
this._indicatorsPanel.hide();
this._fillPositionalIndicator();
},
_onDestroy: function() {
if (this._nWorkspacesNotifyId > 0)
global.screen.disconnect(this._nWorkspacesNotifyId);
this._nWorkspacesNotifyId = 0;
if (this._switchWorkspaceNotifyId > 0)
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
this._switchWorkspaceNotifyId = 0;
},
_allocate: function(actor, box, flags) {
let children = actor.get_children();
let childBox = new Clutter.ActorBox();
for (let i = 0; i < children.length; i++) {
childBox.x1 = children[i].x;
childBox.y1 = 0;
childBox.x2 = children[i].x + children[i].width;
childBox.y2 = children[i].height;
children[i].allocate(childBox, flags);
}
},
_getPreferredWidth: function(actor, fh, alloc) {
let children = actor.get_children();
let width = 0;
for (let i = 0; i < children.length; i++) {
if (children[i].x + children[i].width <= width)
continue;
width = children[i].x + children[i].width;
}
alloc.min_size = 0;
alloc.natural_size = width;
},
_getPreferredHeight: function(actor, fw, alloc) {
let children = actor.get_children();
let height = 0;
if (children.length)
height = children[0].height;
alloc.min_size = height;
alloc.natural_size = height;
},
_addIndicatorClone: function(i, active) {
let actor = new St.Button({ style_class: 'workspace-indicator' });
if (active) {
actor.style_class = 'workspace-indicator active';
}
actor.connect('clicked', Lang.bind(this, function() {
this._activateWorkspace(i);
}));
actor._delegate = {};
actor._delegate.acceptDrop = Lang.bind(this, function(source, actor, x, y, time) {
if (this._workspaceAcceptDrop(i, source, actor, x, y, time)) {
this._activateWorkspace(i);
return true;
}
else
return false;
});
actor.connect('scroll-event', this._scrollEventCb);
this._indicatorsPanel.add_actor(actor);
let [a, spacing] = actor.get_theme_node().get_length('border-spacing', false);
actor.x = spacing * i + actor.width * i;
},
_fillPositionalIndicator: function() {
this._indicatorsPanel.remove_all();
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let n = global.screen.n_workspaces;
for (let i = 0; i < n; i++) {
this._addIndicatorClone(i, i == activeWorkspaceIndex);
}
}
};
function SingleView(width, height, x, y, workspaces) {
this._init(width, height, x, y, workspaces);
}
SingleView.prototype = {
__proto__: GenericWorkspacesView.prototype,
_init: function(width, height, x, y, workspaces) {
let shadowWidth = Math.ceil(global.screen_width * WORKSPACE_SHADOW_SCALE);
this._newWorkspaceArea = new NewWorkspaceArea();
this._newWorkspaceArea.actor._delegate = {
acceptDrop: Lang.bind(this, this._acceptNewWorkspaceDrop)
};
this._leftShadow = new St.Bin({ style_class: 'left-workspaces-shadow',
width: shadowWidth,
height: global.screen_height,
x: global.screen_width });
this._leftShadow._delegate = {
acceptDrop: Lang.bind(this, function(source, actor, x, y, time) {
let active = global.screen.get_active_workspace_index();
let leftWorkspace = this._workspaces[active - 1];
if (leftWorkspace &&
leftWorkspace.acceptDrop(source, actor, x, y, time)) {
leftWorkspace.metaWorkspace.activate(time);
return true;
}
return false;
})
};
this._rightShadow = new St.Bin({ style_class: 'right-workspaces-shadow',
width: shadowWidth,
height: global.screen_height,
x: global.screen_width });
this._rightShadow._delegate = {
acceptDrop: Lang.bind(this, function(source, actor, x, y, time) {
let active = global.screen.get_active_workspace_index();
let rightWorkspace = this._workspaces[active + 1];
if (rightWorkspace &&
rightWorkspace.acceptDrop(source, actor, x, y, time)) {
rightWorkspace.metaWorkspace.activate(time);
return true;
}
return false;
})
};
GenericWorkspacesView.prototype._init.call(this, width, height, x, y, workspaces);
this._itemDragBeginId = Main.overview.connect('item-drag-begin',
Lang.bind(this, this._dragBegin));
this._itemDragEndId = Main.overview.connect('item-drag-end',
Lang.bind(this, this._dragEnd));
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i]._windowDragBeginId = this._workspaces[i].connect('window-drag-begin',
Lang.bind(this, this._dragBegin));
this._workspaces[i]._windowDragEndId = this._workspaces[i].connect('window-drag-end',
Lang.bind(this, this._dragEnd));
}
this.actor.add_actor(this._newWorkspaceArea.actor);
this.actor.add_actor(this._leftShadow);
this.actor.add_actor(this._rightShadow);
this.actor.add_style_class_name('single');
this.actor.set_clip(x, y, width, height);
this._activeWorkspaceX = 0; // x offset of active ws while dragging
this._activeWorkspaceY = 0; // y offset of active ws while dragging
this._scroll = null;
this._lostWorkspaces = [];
this._animating = false; // tweening
this._scrolling = false; // dragging scroll bar or desktop
this._animatingScroll = false; // programatically move the scroll bar
this._inDrag = false; // dragging a window
this._lastMotionTime = -1; // used to track "stopping" while dragging workspaces
this._dragIndex = -1;
this._buttonPressId = 0;
this._capturedEventId = 0;
this._timeoutId = 0;
},
// Compute the position, scale and opacity of the workspaces, but don't
// actually change the actors to match
_computeWorkspacePositions: function() {
let active = global.screen.get_active_workspace_index();
let scale = this._width / global.screen_width;
if (this._inDrag)
scale *= WORKSPACE_DRAGGING_SCALE;
this._setWorkspaceDraggable(active, true);
let _width = this._workspaces[0].actor.width * scale;
let _height = this._workspaces[0].actor.height * scale;
this._activeWorkspaceX = (this._width - _width) / 2;
this._activeWorkspaceY = (this._height - _height) / 2;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
workspace.opacity = (this._inDrag && w != active) ? 200 : 255;
workspace.gridRow = 0;
workspace.gridCol = 0;
workspace.scale = scale;
workspace.gridX = this._x + this._activeWorkspaceX
+ (w - active) * (_width + this._spacing);
workspace.gridY = this._y + this._activeWorkspaceY;
workspace.setSelected(false);
}
this._newWorkspaceArea.scale = scale;
this._newWorkspaceArea.gridX = this._x + this._activeWorkspaceX
+ (this._workspaces.length - active) * (_width + this._spacing);
this._newWorkspaceArea.gridY = this._y + this._activeWorkspaceY;
this._leftShadow.scale = scale;
this._leftShadow.gridX = this._x + this._activeWorkspaceX
- (this._leftShadow.width * scale + this._spacing);
this._leftShadow.gridY = this._y + this._activeWorkspaceY;
this._rightShadow.scale = scale;
this._rightShadow.gridX = this._x + this._activeWorkspaceX
+ (_width + this._spacing);
this._rightShadow.gridY = this._y + this._activeWorkspaceY;
},
_transitionWorkspaces: function() {
// update workspace parameters
this._computeWorkspacePositions();
let active = global.screen.get_active_workspace_index();
let activeActor = this._workspaces[active].actor;
// scale is the factor needed to translate from the currently
// active scale (previous view) to the new scale (this view)
let scale = this._workspaces[active].scale / activeActor.scale_x;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
let targetX, targetY;
// The correct transition would be a straightforward animation
// of each workspace's old position/scale to the new one;
// however, this looks overly busy, so we only use a zoom effect.
// Therefore we scale up each workspace's distance to the active
// workspace, so the latter fills the viewport while the other
// workspaces maintain their relative position
targetX = this._x + scale * (workspace.actor.x - activeActor.x);
targetY = this._y + scale * (workspace.actor.y - activeActor.y);
workspace.positionWindows(Workspace.WindowPositionFlags.ANIMATE);
workspace.setSelected(false);
workspace._hideAllOverlays();
Tweener.addTween(workspace.actor,
{ x: targetX,
y: targetY,
scale_x: workspace.scale,
scale_y: workspace.scale,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: function() {
workspace.zoomToOverview(false);
}});
}
},
_scrollToActive: function(showAnimation) {
let active = global.screen.get_active_workspace_index();
this._computeWorkspacePositions();
this._updateWorkspaceActors(showAnimation);
this._scrollScrollBarToIndex(active, showAnimation);
},
// _setWorkspaceDraggable:
// @index: workspace index
// @draggable: whether workspace @index should be draggable
//
// If @draggable is %true, set up workspace @index to allow switching
// workspaces by dragging the desktop - if a draggable workspace has
// been set up before, it will be reset before the new one is made
// draggable.
// If @draggable is %false, workspace @index is reset to no longer allow
// dragging.
_setWorkspaceDraggable: function(index, draggable) {
if (index < 0 || index >= global.n_workspaces)
return;
let dragActor = this._workspaces[index]._desktop.actor;
if (draggable) {
this._workspaces[index].actor.reactive = true;
// reset old draggable workspace
if (this._dragIndex > -1)
this._setWorkspaceDraggable(this._dragIndex, false);
this._dragIndex = index;
this._buttonPressId = dragActor.connect('button-press-event',
Lang.bind(this, this._onButtonPress));
} else {
this._dragIndex = -1;
if (this._buttonPressId > 0) {
if (dragActor.get_stage())
dragActor.disconnect(this._buttonPressId);
this._buttonPressId = 0;
}
if (this._capturedEventId > 0) {
global.stage.disconnect(this._capturedEventId);
this._capturedEventId = 0;
}
}
},
// start dragging the active workspace
_onButtonPress: function(actor, event) {
if (this._dragIndex == -1)
return;
let [stageX, stageY] = event.get_coords();
this._dragStartX = this._dragX = stageX;
this._scrolling = true;
this._capturedEventId = global.stage.connect('captured-event',
Lang.bind(this, this._onCapturedEvent));
},
// handle captured events while dragging a workspace
_onCapturedEvent: function(actor, event) {
let active = global.screen.get_active_workspace_index();
let stageX, stageY;
switch (event.type()) {
case Clutter.EventType.BUTTON_RELEASE:
this._scrolling = false;
[stageX, stageY] = event.get_coords();
// default to snapping back to the original workspace
let activate = this._dragIndex;
let last = global.screen.n_workspaces - 1;
// If the user has moved more than half a workspace, we want to "settle"
// to the new workspace even if the user stops dragging rather "throws"
// by releasing during the drag.
let noStop = Math.abs(activate - this._scroll.adjustment.value) > 0.5;
// We detect if the user is stopped by comparing the timestamp of the button
// release with the timestamp of the last motion. Experimentally, a difference
// of 0 or 1 millisecond indicates that the mouse is in motion, a larger
// difference indicates that the mouse is stopped.
if ((this._lastMotionTime > 0 && this._lastMotionTime > event.get_time() - 2) || noStop) {
if (stageX > this._dragStartX && activate > 0)
activate--;
else if (stageX < this._dragStartX && activate < last)
activate++;
}
if (activate != active) {
let workspace = this._workspaces[activate].metaWorkspace;
workspace.activate(global.get_current_time());
} else {
this._scrollToActive(true);
}
if (stageX == this._dragStartX)
// no motion? It's a click!
return false;
return true;
case Clutter.EventType.MOTION:
[stageX, stageY] = event.get_coords();
let dx = this._dragX - stageX;
let primary = global.get_primary_monitor();
this._scroll.adjustment.value += (dx / primary.width);
this._dragX = stageX;
this._lastMotionTime = event.get_time();
return true;
}
return false;
},
// Update workspace actors parameters to the values calculated in
// _computeWorkspacePositions()
// @showAnimation: iff %true, transition between states
_updateWorkspaceActors: function(showAnimation) {
let active = global.screen.get_active_workspace_index();
let targetWorkspaceNewX = this._x + this._activeWorkspaceX;
let targetWorkspaceCurrentX = this._workspaces[active].gridX;
let dx = targetWorkspaceNewX - targetWorkspaceCurrentX;
this._setWorkspaceDraggable(active, true);
this._animating = showAnimation;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
Tweener.removeTweens(workspace.actor);
workspace.gridX += dx;
if (showAnimation) {
Tweener.addTween(workspace.actor,
{ x: workspace.gridX,
y: workspace.gridY,
scale_x: workspace.scale,
scale_y: workspace.scale,
opacity: workspace.opacity,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad'
});
} else {
workspace.actor.set_scale(workspace.scale, workspace.scale);
workspace.actor.set_position(workspace.gridX, workspace.gridY);
workspace.actor.opacity = workspace.opacity;
}
}
for (let l = 0; l < this._lostWorkspaces.length; l++) {
let workspace = this._lostWorkspaces[l];
Tweener.removeTweens(workspace.actor);
workspace.gridX += dx;
workspace.actor.show();
workspace.hideWindowsOverlays();
if (showAnimation) {
Tweener.addTween(workspace.actor,
{ x: workspace.gridX,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
this._cleanWorkspaces)
});
} else {
this._cleanWorkspaces();
}
}
Tweener.removeTweens(this._newWorkspaceArea.actor);
Tweener.removeTweens(this._leftShadow);
Tweener.removeTweens(this._rightShadow);
this._newWorkspaceArea.gridX += dx;
if (showAnimation) {
// we have to call _updateVisibility() once before the
// animation and once afterwards - it does not really
// matter which tween we use, as long as it's not inside
// a loop ...
this._updateVisibility();
Tweener.addTween(this._newWorkspaceArea.actor,
{ x: this._newWorkspaceArea.gridX,
y: this._newWorkspaceArea.gridY,
scale_x: this._newWorkspaceArea.scale,
scale_y: this._newWorkspaceArea.scale,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this._animating = false;
this._updateVisibility();
})
});
this._leftShadow.x = this._leftShadow.gridX;
Tweener.addTween(this._leftShadow,
{ y: this._leftShadow.gridY,
scale_x: this._leftShadow.scale,
scale_y: this._leftShadow.scale,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad'
});
this._rightShadow.x = this._rightShadow.gridX;
Tweener.addTween(this._rightShadow,
{ y: this._rightShadow.gridY,
scale_x: this._rightShadow.scale,
scale_y: this._rightShadow.scale,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad'
});
} else {
this._newWorkspaceArea.actor.set_scale(this._newWorkspaceArea.scale,
this._newWorkspaceArea.scale);
this._newWorkspaceArea.actor.set_position(this._newWorkspaceArea.gridX,
this._newWorkspaceArea.gridY);
this._leftShadow.set_scale(this._leftShadow.scale,
this._leftShadow.scale);
this._leftShadow.set_position(this._leftShadow.gridX,
this._leftShadow.gridY);
this._rightShadow.set_scale(this._rightShadow.scale,
this._rightShadow.scale);
this._rightShadow.set_position(this._rightShadow.gridX,
this._rightShadow.gridY);
this._updateVisibility();
}
},
_updateVisibility: function() {
let active = global.screen.get_active_workspace_index();
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
if (this._animating || this._scrolling) {
workspace.hideWindowsOverlays();
workspace.actor.show();
} else {
workspace.showWindowsOverlays();
if (this._inDrag)
workspace.actor.visible = (Math.abs(w - active) <= 1);
else
workspace.actor.visible = (w == active);
}
}
if (this._inDrag) {
this._leftShadow.raise_top();
this._rightShadow.raise_top();
if (active > 0)
this._leftShadow.show();
else
this._leftShadow.hide();
if (active < this._workspaces.length - 1)
this._rightShadow.show();
else
this._rightShadow.hide();
} else {
this._leftShadow.hide();
this._rightShadow.hide();
}
},
_cleanWorkspaces: function() {
if (this._lostWorkspaces.length == 0)
return;
for (let l = 0; l < this._lostWorkspaces.length; l++)
this._lostWorkspaces[l].destroy();
this._lostWorkspaces = [];
this._computeWorkspacePositions();
this._updateWorkspaceActors(false);
},
_scrollScrollBarToIndex: function(index, showAnimation) {
if (!this._scroll || this._scrolling)
return;
this._animatingScroll = true;
if (showAnimation) {
Tweener.addTween(this._scroll.adjustment, {
value: index,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this._animatingScroll = false;
})
});
} else {
this._scroll.adjustment.value = index;
this._animatingScroll = false;
}
},
updateWorkspaces: function(oldNumWorkspaces, newNumWorkspaces, lostWorkspaces) {
let active = global.screen.get_active_workspace_index();
for (let l = 0; l < lostWorkspaces.length; l++)
lostWorkspaces[l].disconnectAll();
if (this._scroll != null)
Tweener.addTween(this._scroll.adjustment,
{ upper: newNumWorkspaces,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad'
});
if (newNumWorkspaces > oldNumWorkspaces) {
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
this.actor.add_actor(this._workspaces[w].actor);
this._workspaces[w]._windowDragBeginId = this._workspaces[w].connect('window-drag-begin',
Lang.bind(this, this._dragBegin));
this._workspaces[w]._windowDragEndId = this._workspaces[w].connect('window-drag-end',
Lang.bind(this, this._dragEnd));
}
this._computeWorkspacePositions();
this._updateWorkspaceActors(false);
} else {
this._lostWorkspaces = lostWorkspaces;
}
this._scrollToActive(true);
this._updatePanelVisibility();
},
_activeWorkspaceChanged: function(wm, from, to, direction) {
this._updatePanelVisibility();
if (this._scrolling)
return;
this._scrollToActive(true);
},
_onDestroy: function() {
GenericWorkspacesView.prototype._onDestroy.call(this);
this._setWorkspaceDraggable(this._dragIndex, false);
if (this._timeoutId) {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
if (this._itemDragBeginId > 0) {
Main.overview.disconnect(this._itemDragBeginId);
this._itemDragBeginId = 0;
}
if (this._itemDragEndId > 0) {
Main.overview.disconnect(this._itemDragEndId);
this._itemDragEndId = 0;
}
for (let w = 0; w < this._workspaces.length; w++) {
if (this._workspaces[w]._windowDragBeginId) {
this._workspaces[w].disconnect(this._workspaces[w]._windowDragBeginId);
this._workspaces[w]._windowDragBeginId = 0;
}
if (this._workspaces[w]._windowDragEndId) {
this._workspaces[w].disconnect(this._workspaces[w]._windowDragEndId);
this._workspaces[w]._windowDragEndId = 0;
}
}
},
_dragBegin: function() {
if (!this._scroll || this._scrolling)
return;
this._inDrag = true;
this._computeWorkspacePositions();
this._updateWorkspaceActors(true);
this._dragMonitor = {
dragMotion: Lang.bind(this, this._onDragMotion)
};
DND.addDragMonitor(this._dragMonitor);
},
_onDragMotion: function(dragEvent) {
let primary = global.get_primary_monitor();
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let leftWorkspace = this._workspaces[activeWorkspaceIndex - 1];
let rightWorkspace = this._workspaces[activeWorkspaceIndex + 1];
let hoverWorkspace = null;
// reactive monitor edges
let leftEdge = primary.x;
let switchLeft = (dragEvent.x <= leftEdge && leftWorkspace);
if (switchLeft && this._dragOverLastX != leftEdge) {
leftWorkspace.metaWorkspace.activate(global.get_current_time());
leftWorkspace.setReservedSlot(dragEvent.dragActor._delegate);
this._dragOverLastX = leftEdge;
return DND.DragMotionResult.MOVE_DROP;
}
let rightEdge = primary.x + primary.width - 1;
let switchRight = (dragEvent.x >= rightEdge && rightWorkspace);
if (switchRight && this._dragOverLastX != rightEdge) {
rightWorkspace.metaWorkspace.activate(global.get_current_time());
rightWorkspace.setReservedSlot(dragEvent.dragActor._delegate);
this._dragOverLastX = rightEdge;
return DND.DragMotionResult.MOVE_DROP;
}
this._dragOverLastX = dragEvent.x;
// check hover state of new workspace area / inactive workspaces
if (leftWorkspace) {
if (dragEvent.targetActor == this._leftShadow) {
hoverWorkspace = leftWorkspace;
leftWorkspace.opacity = leftWorkspace.actor.opacity = 255;
} else {
leftWorkspace.opacity = leftWorkspace.actor.opacity = 200;
}
}
if (rightWorkspace) {
if (dragEvent.targetActor == this._rightShadow) {
hoverWorkspace = rightWorkspace;
rightWorkspace.opacity = rightWorkspace.actor.opacity = 255;
} else {
rightWorkspace.opacity = rightWorkspace.actor.opacity = 200;
}
} else {
let targetParent = dragEvent.targetActor.get_parent();
if (targetParent == this._newWorkspaceArea.actor)
this._newWorkspaceArea.setStyle(true);
else
this._newWorkspaceArea.setStyle(false);
}
// handle delayed workspace switches
if (hoverWorkspace) {
if (!this._timeoutId)
this._timeoutId = Mainloop.timeout_add_seconds(1,
Lang.bind(this, function() {
hoverWorkspace.metaWorkspace.activate(global.get_current_time());
hoverWorkspace.setReservedSlot(dragEvent.dragActor._delegate);
return false;
}));
} else {
if (this._timeoutId) {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
}
return DND.DragMotionResult.CONTINUE;
},
_dragEnd: function() {
if (this._timeoutId) {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
DND.removeMonitor(this._dragMonitor);
this._inDrag = false;
this._computeWorkspacePositions();
this._updateWorkspaceActors(true);
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setReservedSlot(null);
},
// handle changes to the scroll bar's adjustment:
// sync the workspaces' positions to the position of the scroll bar handle
// and change the active workspace if appropriate
_onScroll: function(adj) {
if (this._animatingScroll)
return;
let active = global.screen.get_active_workspace_index();
let current = Math.round(adj.value);
if (active != current) {
let metaWorkspace = this._workspaces[current].metaWorkspace;
if (!this._scrolling) {
// This here is a little tricky - we get here when StScrollBar
// animates paging; we switch the active workspace, but
// leave out any extra animation (just like we would do when
// the handle was dragged)
// If StScrollBar emitted scroll-start before and scroll-stop
// after the animation, this would not be necessary
this._scrolling = true;
metaWorkspace.activate(global.get_current_time());
this._scrolling = false;
} else {
metaWorkspace.activate(global.get_current_time());
}
}
let last = this._workspaces.length - 1;
let firstWorkspaceX = this._workspaces[0].actor.x;
let lastWorkspaceX = this._workspaces[last].actor.x;
let workspacesWidth = lastWorkspaceX - firstWorkspaceX;
// The scrollbar is hidden when there is only one workspace, so
// adj.upper should at least be 2 - but better be safe than sorry
if (adj.upper == 1)
return;
let currentX = firstWorkspaceX;
let newX = this._x - adj.value / (adj.upper - 1) * workspacesWidth;
let dx = newX - currentX;
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i]._hideAllOverlays();
this._workspaces[i].actor.visible = Math.abs(i - adj.value) <= 1;
this._workspaces[i].actor.x += dx;
}
if (!this._scrolling && active == adj.value) {
// Again, work around the paging in StScrollBar: simulate
// the effect of scroll-stop
this._updateWorkspaceActors(false);
}
},
// handle scroll wheel events:
// activate the next or previous workspace and let the signal handler
// manage the animation
_onScrollEvent: function(actor, event) {
let direction = event.get_scroll_direction();
let current = global.screen.get_active_workspace_index();
let last = global.screen.n_workspaces - 1;
let activate = current;
if (direction == Clutter.ScrollDirection.DOWN && current < last)
activate++;
else if (direction == Clutter.ScrollDirection.UP && current > 0)
activate--;
if (activate != current) {
let metaWorkspace = this._workspaces[activate].metaWorkspace;
metaWorkspace.activate(global.get_current_time());
}
},
createControllerBar: function() {
let actor = new St.BoxLayout({ style_class: 'single-view-controls',
pack_start: true,
vertical: true });
let active = global.screen.get_active_workspace_index();
let adj = new St.Adjustment({ value: active,
lower: 0,
page_increment: 1,
page_size: 1,
step_increment: 0,
upper: this._workspaces.length });
this._scroll = new St.ScrollBar({ adjustment: adj,
vertical: false,
name: 'SwitchScroll' });
// we have set adj.step_increment to 0, so all scroll wheel events
// are processed with this handler - this allows us to animate the
// workspace switch
this._scroll.connect('scroll-event',
Lang.bind(this, this._onScrollEvent));
this._scroll.adjustment.connect('notify::value',
Lang.bind(this, this._onScroll));
this._scroll.connect('scroll-start', Lang.bind(this,
function() {
this._scrolling = true;
}));
this._scroll.connect('scroll-stop', Lang.bind(this,
function() {
this._scrolling = false;
this._scrollToActive(true);
}));
let indicator = new WorkspaceIndicator(Lang.bind(this, function(i) {
if (this._workspaces[i] != undefined)
this._workspaces[i].metaWorkspace.activate(global.get_current_time());
}), Lang.bind(this, function(i, source, actor, x, y, time) {
if (this._workspaces[i] != undefined)
return this._workspaces[i].acceptDrop(source, actor, x, y, time);
return false;
}), Lang.bind(this, this._onScrollEvent));
actor.add(indicator.actor, { expand: true, x_fill: true, y_fill: true });
actor.add(this._scroll, { expand: true,
x_fill: true,
y_fill: false,
y_align: St.Align.START });
this._updatePanelVisibility();
return actor;
},
_updatePanelVisibility: function() {
let showSwitches = (global.screen.n_workspaces > 1);
if (this._scroll != null) {
Tweener.addTween(this._scroll,
{ opacity: showSwitches ? 255 : 0,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad' });
}
},
addWorkspace: function() {
let ws = GenericWorkspacesView.prototype.addWorkspace.call(this);
if (ws != null)
ws.activate(global.get_current_time());
return ws;
},
_getWorkspaceIndexToRemove: function() {
return global.screen.get_active_workspace_index();
}
};
function WorkspacesControls() {
this._init();
}
WorkspacesControls.prototype = {
_init: function() {
this.actor = new St.BoxLayout({ style_class: 'workspaces-bar' });
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
let view = global.settings.get_string(WORKSPACES_VIEW_KEY).toUpperCase();
if (view in WorkspacesViewType)
this._currentViewType = WorkspacesViewType[view];
else
this._currentViewType = WorkspacesViewType.SINGLE;
this._currentView = null;
// View switcher button
this._toggleViewButton = new St.Button();
this._updateToggleButtonStyle();
this._toggleViewButton.connect('clicked', Lang.bind(this, function() {
if (this._currentViewType == WorkspacesViewType.SINGLE)
this._setView(WorkspacesViewType.GRID);
else
this._setView(WorkspacesViewType.SINGLE);
}));
this.actor.add(this._toggleViewButton, { y_fill: false, y_align: St.Align.START });
// View specific controls
this._viewControls = new St.Bin({ x_fill: true, y_fill: true });
this.actor.add(this._viewControls, { expand: true, x_fill: true });
// Add/remove workspace buttons
this._removeButton = new St.Button({ style_class: 'workspace-controls remove' });
this._removeButton.connect('clicked', Lang.bind(this, function() {
this._currentView.removeWorkspace();
}));
this.actor.add(this._removeButton, { y_fill: false,
y_align: St.Align.START });
this._addButton = new St.Button({ style_class: 'workspace-controls add' });
this._addButton.connect('clicked', Lang.bind(this, function() {
this._currentView.addWorkspace();
}));
this._addButton._delegate = this._addButton;
this._addButton._delegate.acceptDrop = Lang.bind(this,
function(source, actor, x, y, time) {
return this._currentView._acceptNewWorkspaceDrop(source, actor, x, y, time);
});
this.actor.add(this._addButton, { y_fill: false,
y_align: St.Align.START });
this._nWorkspacesNotifyId =
global.screen.connect('notify::n-workspaces',
Lang.bind(this, this._workspacesChanged));
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace',
Lang.bind(this, this.updateControlsSensitivity));
this._workspacesChanged();
},
updateControls: function(view) {
this._currentView = view;
this.updateControlsSensitivity();
let newControls = this._currentView.createControllerBar();
if (newControls) {
this._viewControls.child = newControls;
this._viewControls.child.opacity = 0;
Tweener.addTween(this._viewControls.child,
{ opacity: 255,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad' });
} else {
if (this._viewControls.child)
Tweener.addTween(this._viewControls.child,
{ opacity: 0,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this._viewControls.child.destroy();
})});
}
},
_updateToggleButtonStyle: function() {
if (this._currentViewType == WorkspacesViewType.SINGLE)
this._toggleViewButton.set_style_class_name('workspace-controls switch-mosaic');
else
this._toggleViewButton.set_style_class_name('workspace-controls switch-single');
},
_setView: function(view) {
if (this._currentViewType == view)
return;
if (WorkspacesViewType.SINGLE == view)
this._toggleViewButton.set_style_class_name('workspace-controls switch-mosaic');
else
this._toggleViewButton.set_style_class_name('workspace-controls switch-single');
this._currentViewType = view;
global.settings.set_string(WORKSPACES_VIEW_KEY, view);
},
_onDestroy: function() {
if (this._nWorkspacesNotifyId > 0) {
global.screen.disconnect(this._nWorkspacesNotifyId);
this._nWorkspacesNotifyId = 0;
}
if (this._switchWorkspaceNotifyId > 0) {
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
this._switchWorkspaceNotifyId = 0;
}
},
_setButtonSensitivity: function(button, sensitive) {
if (button == null)
return;
button.opacity = sensitive ? 255 : 85;
},
updateControlsSensitivity: function() {
if (this._currentView) {
this._setButtonSensitivity(this._removeButton, this._currentView.canRemoveWorkspace());
this._setButtonSensitivity(this._addButton, this._currentView.canAddWorkspace());
}
},
_workspacesChanged: function() {
let showToggleButton = (global.screen.n_workspaces > 1);
Tweener.addTween(this._toggleViewButton,
{ opacity: showToggleButton ? 255 : 0,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad' });
this.updateControlsSensitivity();
}
};
Signals.addSignalMethods(WorkspacesControls.prototype);
function WorkspacesManager(width, height, x, y) {
this._init(width, height, x, y);
}
WorkspacesManager.prototype = {
_init: function(width, height, x, y) {
this._workspacesWidth = width;
this._workspacesHeight = height;
this._workspacesX = x;
this._workspacesY = y;
this._workspaces = [];
for (let w = 0; w < global.screen.n_workspaces; w++) {
let metaWorkspace = global.screen.get_workspace_by_index(w);
this._workspaces[w] = new Workspace.Workspace(metaWorkspace);
}
this.workspacesView = null;
this.controlsBar = new WorkspacesControls();
this._updateView();
this.controlsBar.actor.connect('destroy',
Lang.bind(this, this._onDestroy));
this._viewChangedId =
global.settings.connect('changed::' + WORKSPACES_VIEW_KEY,
Lang.bind(this, this._updateView));
this._nWorkspacesNotifyId =
global.screen.connect('notify::n-workspaces',
Lang.bind(this, this._workspacesChanged));
},
_updateView: function() {
let viewType, newView;
let view = global.settings.get_string(WORKSPACES_VIEW_KEY).toUpperCase();
if (view in WorkspacesViewType)
viewType = WorkspacesViewType[view];
else
viewType = WorkspacesViewType.SINGLE;
switch (viewType) {
case WorkspacesViewType.SINGLE:
newView = new SingleView(this._workspacesWidth,
this._workspacesHeight,
this._workspacesX,
this._workspacesY,
this._workspaces);
break;
case WorkspacesViewType.GRID:
default:
newView = new MosaicView(this._workspacesWidth,
this._workspacesHeight,
this._workspacesX,
this._workspacesY,
this._workspaces);
break;
}
if (this.workspacesView)
this.workspacesView.destroy();
this.workspacesView = newView;
this.controlsBar.updateControls(this.workspacesView);
this.emit('view-changed');
},
_workspacesChanged: function() {
let oldNumWorkspaces = this._workspaces.length;
let newNumWorkspaces = global.screen.n_workspaces;
let active = global.screen.get_active_workspace_index();
if (oldNumWorkspaces == newNumWorkspaces)
return;
let lostWorkspaces = [];
if (newNumWorkspaces > oldNumWorkspaces) {
// Assume workspaces are only added at the end
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
let metaWorkspace = global.screen.get_workspace_by_index(w);
this._workspaces[w] = new Workspace.Workspace(metaWorkspace);
}
} else {
// Assume workspaces are only removed sequentially
// (e.g. 2,3,4 - not 2,4,7)
let removedIndex;
let removedNum = oldNumWorkspaces - newNumWorkspaces;
for (let w = 0; w < oldNumWorkspaces; w++) {
let metaWorkspace = global.screen.get_workspace_by_index(w);
if (this._workspaces[w].metaWorkspace != metaWorkspace) {
removedIndex = w;
break;
}
}
lostWorkspaces = this._workspaces.splice(removedIndex,
removedNum);
// Don't let the user try to select this workspace as it's
// making its exit.
for (let l = 0; l < lostWorkspaces.length; l++)
lostWorkspaces[l].setReactive(false);
}
this.workspacesView.updateWorkspaces(oldNumWorkspaces,
newNumWorkspaces,
lostWorkspaces);
},
_onDestroy: function() {
if (this._nWorkspacesNotifyId > 0)
global.screen.disconnect(this._nWorkspacesNotifyId);
if (this._viewChangedId > 0)
global.settings.disconnect(this._viewChangedId);
for (let w = 0; w < this._workspaces.length; w++) {
this._workspaces[w].disconnectAll();
this._workspaces[w].destroy();
}
}
};
Signals.addSignalMethods(WorkspacesManager.prototype);
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