gnome-shell/js/ui/workspacesView.js
Jasper St. Pierre d5cd534320 workspacesView: Make each WorkspacesView own its set of workspaces
Right now, the workspace update code is complex and spread across parts:
WorkspacesView takes a set of workspaces and looks like it owns them, but
WorkspacesDisplay is actually in charge of setting them up and creating
new ones for each WorkspacesView.

Change initialization and handling to move all of the creation/destruction
responsibilities to WorkspacesView.

We pass in monitorIndex into each WorkspacesView, which is a lie in the
workspacesOnlyOnPrimary case, as the primary WorkspacesView currently has
the responsibility of handling the extra workspaces on all the other
monitors. The commit will clean this up and punt the responsibility back
to WorkspacesDisplay.
2013-10-30 13:17:39 -04:00

629 lines
23 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GObject = imports.gi.GObject;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Signals = imports.signals;
const DND = imports.ui.dnd;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const Tweener = imports.ui.tweener;
const Workspace = imports.ui.workspace;
const WorkspaceThumbnail = imports.ui.workspaceThumbnail;
const WORKSPACE_SWITCH_TIME = 0.25;
// Note that mutter has a compile-time limit of 36
const MAX_WORKSPACES = 16;
const OVERRIDE_SCHEMA = 'org.gnome.shell.overrides';
const WorkspacesView = new Lang.Class({
Name: 'WorkspacesView',
_init: function(monitorIndex) {
this.actor = new St.Widget({ style_class: 'workspaces-view',
reactive: true });
// The actor itself isn't a drop target, so we don't want to pick on its area
this.actor.set_size(0, 0);
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this._fullGeometry = null;
this._actualGeometry = null;
this._monitorIndex = monitorIndex;
this._animating = false; // tweening
this._scrolling = false; // swipe-scrolling
this._animatingScroll = false; // programatically updating the adjustment
this._inDrag = false; // dragging a window
this._settings = new Gio.Settings({ schema: OVERRIDE_SCHEMA });
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
this.scrollAdjustment = new St.Adjustment({ value: activeWorkspaceIndex,
lower: 0,
page_increment: 1,
page_size: 1,
step_increment: 0,
upper: 0 });
this.scrollAdjustment.connect('notify::value',
Lang.bind(this, this._onScroll));
this._workspaces = [];
this._updateWorkspaces();
this._updateWorkspacesId = global.screen.connect('notify::n-workspaces', Lang.bind(this, this._updateWorkspaces));
this._extraWorkspaces = [];
this._updateExtraWorkspaces();
this._updateExtraWorkspacesId = this._settings.connect('changed::workspaces-only-on-primary', Lang.bind(this, this._updateExtraWorkspaces));
this._overviewShownId =
Main.overview.connect('shown',
Lang.bind(this, function() {
this.actor.set_clip(this._fullGeometry.x, this._fullGeometry.y,
this._fullGeometry.width, this._fullGeometry.height);
}));
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace',
Lang.bind(this, this._activeWorkspaceChanged));
this._windowDragBeginId = Main.overview.connect('window-drag-begin',
Lang.bind(this, this._dragBegin));
this._windowDragEndId = Main.overview.connect('window-drag-end',
Lang.bind(this, this._dragEnd));
},
_updateExtraWorkspaces: function() {
this._destroyExtraWorkspaces();
if (!this._settings.get_boolean('workspaces-only-on-primary'))
return;
let monitors = Main.layoutManager.monitors;
for (let i = 0; i < monitors.length; i++) {
if (i == Main.layoutManager.primaryIndex)
continue;
let ws = new Workspace.Workspace(null, i);
ws.setFullGeometry(monitors[i]);
ws.setActualGeometry(monitors[i]);
Main.layoutManager.overviewGroup.add_actor(ws.actor);
this._extraWorkspaces.push(ws);
}
},
_destroyExtraWorkspaces: function() {
for (let m = 0; m < this._extraWorkspaces.length; m++)
this._extraWorkspaces[m].destroy();
this._extraWorkspaces = [];
},
_syncGeometry: function() {
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setFullGeometry(this._fullGeometry);
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setActualGeometry(this._actualGeometry);
},
setFullGeometry: function(geom) {
this._fullGeometry = geom;
this._syncGeometry();
},
setActualGeometry: function(geom) {
this._actualGeometry = geom;
this._syncGeometry();
},
getActiveWorkspace: function() {
let active = global.screen.get_active_workspace_index();
return this._workspaces[active];
},
zoomToOverview: function() {
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomToOverview();
for (let w = 0; w < this._extraWorkspaces.length; w++)
this._extraWorkspaces[w].zoomToOverview();
},
zoomFromOverview: function() {
this.actor.remove_clip();
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomFromOverview();
for (let w = 0; w < this._extraWorkspaces.length; w++)
this._extraWorkspaces[w].zoomFromOverview();
},
destroy: function() {
this.actor.destroy();
},
syncStacking: function(stackIndices) {
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].syncStacking(stackIndices);
for (let i = 0; i < this._extraWorkspaces.length; i++)
this._extraWorkspaces[i].syncStacking(stackIndices);
},
_scrollToActive: function() {
let active = global.screen.get_active_workspace_index();
this._updateWorkspaceActors(true);
this._updateScrollAdjustment(active);
},
// Update workspace actors parameters
// @showAnimation: iff %true, transition between states
_updateWorkspaceActors: function(showAnimation) {
let active = global.screen.get_active_workspace_index();
this._animating = showAnimation;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
Tweener.removeTweens(workspace.actor);
let y = (w - active) * this._fullGeometry.height;
if (showAnimation) {
let params = { y: y,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad'
};
// we have to call _updateVisibility() once before the
// animation and once afterwards - it does not really
// matter which tween we use, so we pick the first one ...
if (w == 0) {
this._updateVisibility();
params.onComplete = Lang.bind(this,
function() {
this._animating = false;
this._updateVisibility();
});
}
Tweener.addTween(workspace.actor, params);
} else {
workspace.actor.set_position(0, y);
if (w == 0)
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.actor.show();
} else {
if (this._inDrag)
workspace.actor.visible = (Math.abs(w - active) <= 1);
else
workspace.actor.visible = (w == active);
}
}
},
_updateScrollAdjustment: function(index) {
if (this._scrolling)
return;
this._animatingScroll = true;
Tweener.addTween(this.scrollAdjustment, {
value: index,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this._animatingScroll = false;
})
});
},
_updateWorkspaces: function() {
let oldNumWorkspaces = this._workspaces.length;
let newNumWorkspaces = global.screen.n_workspaces;
this.scrollAdjustment.upper = newNumWorkspaces;
if (newNumWorkspaces > oldNumWorkspaces) {
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
let metaWorkspace = global.screen.get_workspace_by_index(w);
let workspace = new Workspace.Workspace(metaWorkspace, this._monitorIndex);
this._workspaces.push(workspace);
this.actor.add_actor(workspace.actor);
}
if (this._fullGeometry)
this._updateWorkspaceActors(false);
} else if (newNumWorkspaces < oldNumWorkspaces) {
let nRemoved = (newNumWorkspaces - oldNumWorkspaces);
let removed = this._workspaces.splice(oldNumWorkspaces, nRemoved);
removed.forEach(function(workspace) {
workspace.destroy();
});
}
this._syncGeometry();
},
_activeWorkspaceChanged: function(wm, from, to, direction) {
if (this._scrolling)
return;
this._scrollToActive();
},
_onDestroy: function() {
this._destroyExtraWorkspaces();
this.scrollAdjustment.run_dispose();
Main.overview.disconnect(this._overviewShownId);
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
global.screen.disconnect(this._updateWorkspacesId);
this._settings.disconnect(this._updateExtraWorkspacesId);
if (this._inDrag)
this._dragEnd();
if (this._windowDragBeginId > 0) {
Main.overview.disconnect(this._windowDragBeginId);
this._windowDragBeginId = 0;
}
if (this._windowDragEndId > 0) {
Main.overview.disconnect(this._windowDragEndId);
this._windowDragEndId = 0;
}
},
_dragBegin: function(overview, clone) {
if (this._scrolling)
return;
this._inDrag = true;
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setReservedSlot(clone);
for (let i = 0; i < this._extraWorkspaces.length; i++)
this._extraWorkspaces[i].setReservedSlot(clone);
},
_dragEnd: function() {
this._inDrag = false;
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setReservedSlot(null);
for (let i = 0; i < this._extraWorkspaces.length; i++)
this._extraWorkspaces[i].setReservedSlot(null);
},
startSwipeScroll: function() {
this._scrolling = true;
},
endSwipeScroll: function() {
this._scrolling = false;
// Make sure title captions etc are shown as necessary
this._scrollToActive();
this._updateVisibility();
},
// sync the workspaces' positions to the value of the scroll adjustment
// 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) {
if (!this._workspaces[current]) {
// The current workspace was destroyed. This could happen
// when you are on the last empty workspace, and consolidate
// windows using the thumbnail bar.
// In that case, the intended behavior is to stay on the empty
// workspace, which is the last one, so pick it.
current = this._workspaces.length - 1;
}
let metaWorkspace = this._workspaces[current].metaWorkspace;
metaWorkspace.activate(global.get_current_time());
}
let last = this._workspaces.length - 1;
let firstWorkspaceY = this._workspaces[0].actor.y;
let lastWorkspaceY = this._workspaces[last].actor.y;
let workspacesHeight = lastWorkspaceY - firstWorkspaceY;
if (adj.upper == 1)
return;
let currentY = firstWorkspaceY;
let newY = - adj.value / (adj.upper - 1) * workspacesHeight;
let dy = newY - currentY;
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].actor.visible = Math.abs(i - adj.value) <= 1;
this._workspaces[i].actor.y += dy;
}
},
});
Signals.addSignalMethods(WorkspacesView.prototype);
const WorkspacesDisplay = new Lang.Class({
Name: 'WorkspacesDisplay',
_init: function() {
this.actor = new St.Widget({ clip_to_allocation: true });
this.actor.connect('notify::allocation', Lang.bind(this, this._updateWorkspacesActualGeometry));
this.actor.connect('parent-set', Lang.bind(this, this._parentSet));
let clickAction = new Clutter.ClickAction()
clickAction.connect('clicked', Lang.bind(this, function(action) {
// Only switch to the workspace when there's no application
// windows open. The problem is that it's too easy to miss
// an app window and get the wrong one focused.
if (action.get_button() == 1 &&
this._getPrimaryView().getActiveWorkspace().isEmpty())
Main.overview.hide();
}));
Main.overview.addAction(clickAction);
this.actor.bind_property('mapped', clickAction, 'enabled', GObject.BindingFlags.SYNC_CREATE);
let panAction = new Clutter.PanAction();
panAction.connect('pan', Lang.bind(this, this._onPan));
panAction.connect('gesture-begin', Lang.bind(this, function() {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].startSwipeScroll();
return true;
}));
panAction.connect('gesture-cancel', Lang.bind(this, function() {
clickAction.release();
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].endSwipeScroll();
}));
panAction.connect('gesture-end', Lang.bind(this, function() {
clickAction.release();
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].endSwipeScroll();
}));
Main.overview.addAction(panAction);
this.actor.bind_property('mapped', panAction, 'enabled', GObject.BindingFlags.SYNC_CREATE);
this._primaryIndex = Main.layoutManager.primaryIndex;
this._workspacesViews = [];
this._primaryScrollAdjustment = null;
this._settings = new Gio.Settings({ schema: OVERRIDE_SCHEMA });
this._settings.connect('changed::workspaces-only-on-primary',
Lang.bind(this,
this._workspacesOnlyOnPrimaryChanged));
this._workspacesOnlyOnPrimaryChanged();
this._switchWorkspaceNotifyId = 0;
this._notifyOpacityId = 0;
this._scrollEventId = 0;
this._fullGeometry = null;
},
_onPan: function(action) {
let [dist, dx, dy] = action.get_motion_delta(0);
let adjustment = this._scrollAdjustment;
adjustment.value -= (dy / this.actor.height) * adjustment.page_size;
return false;
},
show: function() {
this._updateWorkspacesViews();
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].zoomToOverview();
this._restackedNotifyId =
Main.overview.connect('windows-restacked',
Lang.bind(this, this._onRestacked));
if (this._scrollEventId == 0)
this._scrollEventId = Main.overview.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
},
zoomFromOverview: function() {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].zoomFromOverview();
},
hide: function() {
if (this._restackedNotifyId > 0){
Main.overview.disconnect(this._restackedNotifyId);
this._restackedNotifyId = 0;
}
if (this._scrollEventId > 0) {
Main.overview.disconnect(this._scrollEventId);
this._scrollEventId = 0;
}
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].destroy();
this._workspacesViews = [];
},
_workspacesOnlyOnPrimaryChanged: function() {
this._workspacesOnlyOnPrimary = this._settings.get_boolean('workspaces-only-on-primary');
if (!Main.overview.visible)
return;
this._updateWorkspacesViews();
},
_updateWorkspacesViews: function() {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].destroy();
this._workspacesViews = [];
let monitors = Main.layoutManager.monitors;
for (let i = 0; i < monitors.length; i++) {
if (this._workspacesOnlyOnPrimary && i != this._primaryIndex)
continue; // we are only interested in the primary monitor
let view = new WorkspacesView(i);
view.actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
if (this._workspacesOnlyOnPrimary || i == this._primaryIndex) {
this._scrollAdjustment = view.scrollAdjustment;
this._scrollAdjustment.connect('notify::value',
Lang.bind(this, this._scrollValueChanged));
}
this._workspacesViews.push(view);
}
this._updateWorkspacesFullGeometry();
this._updateWorkspacesActualGeometry();
for (let i = 0; i < this._workspacesViews.length; i++)
Main.layoutManager.overviewGroup.add_actor(this._workspacesViews[i].actor);
},
_scrollValueChanged: function() {
if (this._workspacesOnlyOnPrimary)
return;
for (let i = 0; i < this._workspacesViews.length; i++) {
if (i == this._primaryIndex)
continue;
let adjustment = this._workspacesViews[i].scrollAdjustment;
// the adjustments work in terms of workspaces, so the
// values map directly
adjustment.value = this._scrollAdjustment.value;
}
},
_getPrimaryView: function() {
if (!this._workspacesViews.length)
return null;
if (this._workspacesOnlyOnPrimary)
return this._workspacesViews[0];
else
return this._workspacesViews[this._primaryIndex];
},
activeWorkspaceHasMaximizedWindows: function() {
return this._getPrimaryView().getActiveWorkspace().hasMaximizedWindows();
},
_parentSet: function(actor, oldParent) {
if (oldParent && this._notifyOpacityId)
oldParent.disconnect(this._notifyOpacityId);
this._notifyOpacityId = 0;
Meta.later_add(Meta.LaterType.BEFORE_REDRAW, Lang.bind(this,
function() {
let newParent = this.actor.get_parent();
if (!newParent)
return;
// This is kinda hackish - we want the primary view to
// appear as parent of this.actor, though in reality it
// is added directly to Main.layoutManager.overviewGroup
this._notifyOpacityId = newParent.connect('notify::opacity',
Lang.bind(this, function() {
let opacity = this.actor.get_parent().opacity;
let primaryView = this._getPrimaryView();
if (!primaryView)
return;
primaryView.actor.opacity = opacity;
primaryView.actor.visible = opacity != 0;
}));
}));
},
// This geometry should always be the fullest geometry
// the workspaces switcher can ever be allocated, as if
// the sliding controls were never slid in at all.
setWorkspacesFullGeometry: function(geom) {
this._fullGeometry = geom;
this._updateWorkspacesFullGeometry();
},
_updateWorkspacesFullGeometry: function() {
if (!this._workspacesViews.length)
return;
let monitors = Main.layoutManager.monitors;
let m = 0;
for (let i = 0; i < monitors.length; i++) {
if (i == this._primaryIndex) {
this._workspacesViews[m].setFullGeometry(this._fullGeometry);
m++;
} else if (!this._workspacesOnlyOnPrimary) {
this._workspacesViews[m].setFullGeometry(monitors[i]);
m++;
}
}
},
_updateWorkspacesActualGeometry: function() {
if (!this._workspacesViews.length)
return;
let [x, y] = this.actor.get_transformed_position();
let width = this.actor.allocation.x2 - this.actor.allocation.x1;
let height = this.actor.allocation.y2 - this.actor.allocation.y1;
let geometry = { x: x, y: y, width: width, height: height };
let monitors = Main.layoutManager.monitors;
let m = 0;
for (let i = 0; i < monitors.length; i++) {
if (i == this._primaryIndex) {
this._workspacesViews[m].setActualGeometry(geometry);
m++;
} else if (!this._workspacesOnlyOnPrimary) {
this._workspacesViews[m].setActualGeometry(monitors[i]);
m++;
}
}
},
_onRestacked: function(overview, stackIndices) {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].syncStacking(stackIndices);
},
_onScrollEvent: function(actor, event) {
if (!this.actor.mapped)
return false;
let activeWs = global.screen.get_active_workspace();
let ws;
switch (event.get_scroll_direction()) {
case Clutter.ScrollDirection.UP:
ws = activeWs.get_neighbor(Meta.MotionDirection.UP);
break;
case Clutter.ScrollDirection.DOWN:
ws = activeWs.get_neighbor(Meta.MotionDirection.DOWN);
break;
default:
return false;
}
Main.wm.actionMoveWorkspace(ws);
return true;
}
});
Signals.addSignalMethods(WorkspacesDisplay.prototype);