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Diffstat (limited to 'js/ui/viewSelector.js')
| -rw-r--r-- | js/ui/viewSelector.js | 609 |
1 files changed, 609 insertions, 0 deletions
diff --git a/js/ui/viewSelector.js b/js/ui/viewSelector.js new file mode 100644 index 0000000..bfb02a5 --- /dev/null +++ b/js/ui/viewSelector.js @@ -0,0 +1,609 @@ +// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*- +/* exported ViewSelector */ + +const { Clutter, Gio, GObject, Meta, Shell, St } = imports.gi; +const Signals = imports.signals; + +const AppDisplay = imports.ui.appDisplay; +const Main = imports.ui.main; +const OverviewControls = imports.ui.overviewControls; +const Params = imports.misc.params; +const Search = imports.ui.search; +const ShellEntry = imports.ui.shellEntry; +const WorkspacesView = imports.ui.workspacesView; +const EdgeDragAction = imports.ui.edgeDragAction; +const IconGrid = imports.ui.iconGrid; + +const SHELL_KEYBINDINGS_SCHEMA = 'org.gnome.shell.keybindings'; +var PINCH_GESTURE_THRESHOLD = 0.7; + +var ViewPage = { + WINDOWS: 1, + APPS: 2, + SEARCH: 3, +}; + +var FocusTrap = GObject.registerClass( +class FocusTrap extends St.Widget { + vfunc_navigate_focus(from, direction) { + if (direction == St.DirectionType.TAB_FORWARD || + direction == St.DirectionType.TAB_BACKWARD) + return super.vfunc_navigate_focus(from, direction); + return false; + } +}); + +function getTermsForSearchString(searchString) { + searchString = searchString.replace(/^\s+/g, '').replace(/\s+$/g, ''); + if (searchString == '') + return []; + + let terms = searchString.split(/\s+/); + return terms; +} + +var TouchpadShowOverviewAction = class { + constructor(actor) { + actor.connect('captured-event::touchpad', this._handleEvent.bind(this)); + } + + _handleEvent(actor, event) { + if (event.type() != Clutter.EventType.TOUCHPAD_PINCH) + return Clutter.EVENT_PROPAGATE; + + if (event.get_touchpad_gesture_finger_count() != 3) + return Clutter.EVENT_PROPAGATE; + + if (event.get_gesture_phase() == Clutter.TouchpadGesturePhase.END) + this.emit('activated', event.get_gesture_pinch_scale()); + + return Clutter.EVENT_STOP; + } +}; +Signals.addSignalMethods(TouchpadShowOverviewAction.prototype); + +var ShowOverviewAction = GObject.registerClass({ + Signals: { 'activated': { param_types: [GObject.TYPE_DOUBLE] } }, +}, class ShowOverviewAction extends Clutter.GestureAction { + _init() { + super._init(); + this.set_n_touch_points(3); + + global.display.connect('grab-op-begin', () => { + this.cancel(); + }); + } + + vfunc_gesture_prepare(_actor) { + return Main.actionMode == Shell.ActionMode.NORMAL && + this.get_n_current_points() == this.get_n_touch_points(); + } + + _getBoundingRect(motion) { + let minX, minY, maxX, maxY; + + for (let i = 0; i < this.get_n_current_points(); i++) { + let x, y; + + if (motion == true) + [x, y] = this.get_motion_coords(i); + else + [x, y] = this.get_press_coords(i); + + if (i == 0) { + minX = maxX = x; + minY = maxY = y; + } else { + minX = Math.min(minX, x); + minY = Math.min(minY, y); + maxX = Math.max(maxX, x); + maxY = Math.max(maxY, y); + } + } + + return new Meta.Rectangle({ x: minX, + y: minY, + width: maxX - minX, + height: maxY - minY }); + } + + vfunc_gesture_begin(_actor) { + this._initialRect = this._getBoundingRect(false); + return true; + } + + vfunc_gesture_end(_actor) { + let rect = this._getBoundingRect(true); + let oldArea = this._initialRect.width * this._initialRect.height; + let newArea = rect.width * rect.height; + let areaDiff = newArea / oldArea; + + this.emit('activated', areaDiff); + } +}); + +var ViewSelector = GObject.registerClass({ + Signals: { + 'page-changed': {}, + 'page-empty': {}, + }, +}, class ViewSelector extends Shell.Stack { + _init(searchEntry, workspaceAdjustment, showAppsButton) { + super._init({ + name: 'viewSelector', + x_expand: true, + visible: false, + }); + + this._showAppsButton = showAppsButton; + this._showAppsButton.connect('notify::checked', this._onShowAppsButtonToggled.bind(this)); + + this._activePage = null; + + this._searchActive = false; + + this._entry = searchEntry; + ShellEntry.addContextMenu(this._entry); + + this._text = this._entry.clutter_text; + this._text.connect('text-changed', this._onTextChanged.bind(this)); + this._text.connect('key-press-event', this._onKeyPress.bind(this)); + this._text.connect('key-focus-in', () => { + this._searchResults.highlightDefault(true); + }); + this._text.connect('key-focus-out', () => { + this._searchResults.highlightDefault(false); + }); + this._entry.connect('popup-menu', () => { + if (!this._searchActive) + return; + + this._entry.menu.close(); + this._searchResults.popupMenuDefault(); + }); + this._entry.connect('notify::mapped', this._onMapped.bind(this)); + global.stage.connect('notify::key-focus', this._onStageKeyFocusChanged.bind(this)); + + this._entry.set_primary_icon(new St.Icon({ style_class: 'search-entry-icon', + icon_name: 'edit-find-symbolic' })); + this._clearIcon = new St.Icon({ style_class: 'search-entry-icon', + icon_name: 'edit-clear-symbolic' }); + + this._iconClickedId = 0; + this._capturedEventId = 0; + + this._workspacesDisplay = + new WorkspacesView.WorkspacesDisplay(workspaceAdjustment); + this._workspacesPage = this._addPage(this._workspacesDisplay, + _("Windows"), 'focus-windows-symbolic'); + + this.appDisplay = new AppDisplay.AppDisplay(); + this._appsPage = this._addPage(this.appDisplay, + _("Applications"), 'view-app-grid-symbolic'); + + this._searchResults = new Search.SearchResultsView(); + this._searchPage = this._addPage(this._searchResults, + _("Search"), 'edit-find-symbolic', + { a11yFocus: this._entry }); + + // Since the entry isn't inside the results container we install this + // dummy widget as the last results container child so that we can + // include the entry in the keynav tab path + this._focusTrap = new FocusTrap({ can_focus: true }); + this._focusTrap.connect('key-focus-in', () => { + this._entry.grab_key_focus(); + }); + this._searchResults.add_actor(this._focusTrap); + + global.focus_manager.add_group(this._searchResults); + + this._stageKeyPressId = 0; + Main.overview.connect('showing', () => { + this._stageKeyPressId = global.stage.connect('key-press-event', + this._onStageKeyPress.bind(this)); + }); + Main.overview.connect('hiding', () => { + if (this._stageKeyPressId != 0) { + global.stage.disconnect(this._stageKeyPressId); + this._stageKeyPressId = 0; + } + }); + Main.overview.connect('shown', () => { + // If we were animating from the desktop view to the + // apps page the workspace page was visible, allowing + // the windows to animate, but now we no longer want to + // show it given that we are now on the apps page or + // search page. + if (this._activePage != this._workspacesPage) { + this._workspacesPage.opacity = 0; + this._workspacesPage.hide(); + } + }); + + Main.wm.addKeybinding('toggle-application-view', + new Gio.Settings({ schema_id: SHELL_KEYBINDINGS_SCHEMA }), + Meta.KeyBindingFlags.IGNORE_AUTOREPEAT, + Shell.ActionMode.NORMAL | + Shell.ActionMode.OVERVIEW, + this._toggleAppsPage.bind(this)); + + Main.wm.addKeybinding('toggle-overview', + new Gio.Settings({ schema_id: SHELL_KEYBINDINGS_SCHEMA }), + Meta.KeyBindingFlags.IGNORE_AUTOREPEAT, + Shell.ActionMode.NORMAL | + Shell.ActionMode.OVERVIEW, + Main.overview.toggle.bind(Main.overview)); + + let side; + if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) + side = St.Side.RIGHT; + else + side = St.Side.LEFT; + let gesture = new EdgeDragAction.EdgeDragAction(side, + Shell.ActionMode.NORMAL); + gesture.connect('activated', () => { + if (Main.overview.visible) + Main.overview.hide(); + else + this.showApps(); + }); + global.stage.add_action(gesture); + + gesture = new ShowOverviewAction(); + gesture.connect('activated', this._pinchGestureActivated.bind(this)); + global.stage.add_action(gesture); + + gesture = new TouchpadShowOverviewAction(global.stage); + gesture.connect('activated', this._pinchGestureActivated.bind(this)); + } + + _pinchGestureActivated(action, scale) { + if (scale < PINCH_GESTURE_THRESHOLD) + Main.overview.show(); + } + + _toggleAppsPage() { + this._showAppsButton.checked = !this._showAppsButton.checked; + Main.overview.show(); + } + + showApps() { + this._showAppsButton.checked = true; + Main.overview.show(); + } + + animateToOverview() { + this.show(); + this.reset(); + this._workspacesDisplay.animateToOverview(this._showAppsButton.checked); + this._activePage = null; + if (this._showAppsButton.checked) + this._showPage(this._appsPage); + else + this._showPage(this._workspacesPage); + + if (!this._workspacesDisplay.activeWorkspaceHasMaximizedWindows()) + Main.overview.fadeOutDesktop(); + } + + animateFromOverview() { + // Make sure workspace page is fully visible to allow + // workspace.js do the animation of the windows + this._workspacesPage.opacity = 255; + + this._workspacesDisplay.animateFromOverview(this._activePage != this._workspacesPage); + + this._showAppsButton.checked = false; + + if (!this._workspacesDisplay.activeWorkspaceHasMaximizedWindows()) + Main.overview.fadeInDesktop(); + } + + vfunc_hide() { + this.reset(); + this._workspacesDisplay.hide(); + + super.vfunc_hide(); + } + + _addPage(actor, name, a11yIcon, params) { + params = Params.parse(params, { a11yFocus: null }); + + let page = new St.Bin({ child: actor }); + + if (params.a11yFocus) { + Main.ctrlAltTabManager.addGroup(params.a11yFocus, name, a11yIcon); + } else { + Main.ctrlAltTabManager.addGroup(actor, name, a11yIcon, { + proxy: this, + focusCallback: () => this._a11yFocusPage(page), + }); + } + page.hide(); + this.add_actor(page); + return page; + } + + _fadePageIn() { + this._activePage.ease({ + opacity: 255, + duration: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + }); + } + + _fadePageOut(page) { + let oldPage = page; + page.ease({ + opacity: 0, + duration: OverviewControls.SIDE_CONTROLS_ANIMATION_TIME, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + onStopped: () => this._animateIn(oldPage), + }); + } + + _animateIn(oldPage) { + if (oldPage) + oldPage.hide(); + + this.emit('page-empty'); + + this._activePage.show(); + + if (this._activePage == this._appsPage && oldPage == this._workspacesPage) { + // Restore opacity, in case we animated via _fadePageOut + this._activePage.opacity = 255; + this.appDisplay.animate(IconGrid.AnimationDirection.IN); + } else { + this._fadePageIn(); + } + } + + _animateOut(page) { + let oldPage = page; + if (page == this._appsPage && + this._activePage == this._workspacesPage && + !Main.overview.animationInProgress) { + this.appDisplay.animate(IconGrid.AnimationDirection.OUT, () => { + this._animateIn(oldPage); + }); + } else { + this._fadePageOut(page); + } + } + + _showPage(page) { + if (!Main.overview.visible) + return; + + if (page == this._activePage) + return; + + let oldPage = this._activePage; + this._activePage = page; + this.emit('page-changed'); + + if (oldPage) + this._animateOut(oldPage); + else + this._animateIn(); + } + + _a11yFocusPage(page) { + this._showAppsButton.checked = page == this._appsPage; + page.navigate_focus(null, St.DirectionType.TAB_FORWARD, false); + } + + _onShowAppsButtonToggled() { + this._showPage(this._showAppsButton.checked + ? this._appsPage : this._workspacesPage); + } + + _onStageKeyPress(actor, event) { + // Ignore events while anything but the overview has + // pushed a modal (system modals, looking glass, ...) + if (Main.modalCount > 1) + return Clutter.EVENT_PROPAGATE; + + let symbol = event.get_key_symbol(); + + if (symbol === Clutter.KEY_Escape) { + if (this._searchActive) + this.reset(); + else if (this._showAppsButton.checked) + this._showAppsButton.checked = false; + else + Main.overview.hide(); + return Clutter.EVENT_STOP; + } else if (this._shouldTriggerSearch(symbol)) { + this.startSearch(event); + } else if (!this._searchActive && !global.stage.key_focus) { + if (symbol === Clutter.KEY_Tab || symbol === Clutter.KEY_Down) { + this._activePage.navigate_focus(null, St.DirectionType.TAB_FORWARD, false); + return Clutter.EVENT_STOP; + } else if (symbol === Clutter.KEY_ISO_Left_Tab) { + this._activePage.navigate_focus(null, St.DirectionType.TAB_BACKWARD, false); + return Clutter.EVENT_STOP; + } + } + return Clutter.EVENT_PROPAGATE; + } + + _searchCancelled() { + this._showPage(this._showAppsButton.checked + ? this._appsPage + : this._workspacesPage); + + // Leave the entry focused when it doesn't have any text; + // when replacing a selected search term, Clutter emits + // two 'text-changed' signals, one for deleting the previous + // text and one for the new one - the second one is handled + // incorrectly when we remove focus + // (https://bugzilla.gnome.org/show_bug.cgi?id=636341) */ + if (this._text.text != '') + this.reset(); + } + + reset() { + // Don't drop the key focus on Clutter's side if anything but the + // overview has pushed a modal (e.g. system modals when activated using + // the overview). + if (Main.modalCount <= 1) + global.stage.set_key_focus(null); + + this._entry.text = ''; + + this._text.set_cursor_visible(true); + this._text.set_selection(0, 0); + } + + _onStageKeyFocusChanged() { + let focus = global.stage.get_key_focus(); + let appearFocused = this._entry.contains(focus) || + this._searchResults.contains(focus); + + this._text.set_cursor_visible(appearFocused); + + if (appearFocused) + this._entry.add_style_pseudo_class('focus'); + else + this._entry.remove_style_pseudo_class('focus'); + } + + _onMapped() { + if (this._entry.mapped) { + // Enable 'find-as-you-type' + this._capturedEventId = global.stage.connect('captured-event', + this._onCapturedEvent.bind(this)); + this._text.set_cursor_visible(true); + this._text.set_selection(0, 0); + } else { + // Disable 'find-as-you-type' + if (this._capturedEventId > 0) + global.stage.disconnect(this._capturedEventId); + this._capturedEventId = 0; + } + } + + _shouldTriggerSearch(symbol) { + if (symbol === Clutter.KEY_Multi_key) + return true; + + if (symbol === Clutter.KEY_BackSpace && this._searchActive) + return true; + + let unicode = Clutter.keysym_to_unicode(symbol); + if (unicode == 0) + return false; + + if (getTermsForSearchString(String.fromCharCode(unicode)).length > 0) + return true; + + return false; + } + + startSearch(event) { + global.stage.set_key_focus(this._text); + + let synthEvent = event.copy(); + synthEvent.set_source(this._text); + this._text.event(synthEvent, false); + } + + // the entry does not show the hint + _isActivated() { + return this._text.text == this._entry.get_text(); + } + + _onTextChanged() { + let terms = getTermsForSearchString(this._entry.get_text()); + + this._searchActive = terms.length > 0; + this._searchResults.setTerms(terms); + + if (this._searchActive) { + this._showPage(this._searchPage); + + this._entry.set_secondary_icon(this._clearIcon); + + if (this._iconClickedId == 0) { + this._iconClickedId = this._entry.connect('secondary-icon-clicked', + this.reset.bind(this)); + } + } else { + if (this._iconClickedId > 0) { + this._entry.disconnect(this._iconClickedId); + this._iconClickedId = 0; + } + + this._entry.set_secondary_icon(null); + this._searchCancelled(); + } + } + + _onKeyPress(entry, event) { + let symbol = event.get_key_symbol(); + if (symbol === Clutter.KEY_Escape) { + if (this._isActivated()) { + this.reset(); + return Clutter.EVENT_STOP; + } + } else if (this._searchActive) { + let arrowNext, nextDirection; + if (entry.get_text_direction() == Clutter.TextDirection.RTL) { + arrowNext = Clutter.KEY_Left; + nextDirection = St.DirectionType.LEFT; + } else { + arrowNext = Clutter.KEY_Right; + nextDirection = St.DirectionType.RIGHT; + } + + if (symbol === Clutter.KEY_Tab) { + this._searchResults.navigateFocus(St.DirectionType.TAB_FORWARD); + return Clutter.EVENT_STOP; + } else if (symbol === Clutter.KEY_ISO_Left_Tab) { + this._focusTrap.can_focus = false; + this._searchResults.navigateFocus(St.DirectionType.TAB_BACKWARD); + this._focusTrap.can_focus = true; + return Clutter.EVENT_STOP; + } else if (symbol === Clutter.KEY_Down) { + this._searchResults.navigateFocus(St.DirectionType.DOWN); + return Clutter.EVENT_STOP; + } else if (symbol == arrowNext && this._text.position == -1) { + this._searchResults.navigateFocus(nextDirection); + return Clutter.EVENT_STOP; + } else if (symbol === Clutter.KEY_Return || symbol === Clutter.KEY_KP_Enter) { + this._searchResults.activateDefault(); + return Clutter.EVENT_STOP; + } + } + return Clutter.EVENT_PROPAGATE; + } + + _onCapturedEvent(actor, event) { + if (event.type() == Clutter.EventType.BUTTON_PRESS) { + let source = event.get_source(); + if (source != this._text && + this._text.has_key_focus() && + this._text.text == '' && + !this._text.has_preedit() && + !Main.layoutManager.keyboardBox.contains(source)) { + // the user clicked outside after activating the entry, but + // with no search term entered and no keyboard button pressed + // - cancel the search + this.reset(); + } + } + + return Clutter.EVENT_PROPAGATE; + } + + getActivePage() { + if (this._activePage == this._workspacesPage) + return ViewPage.WINDOWS; + else if (this._activePage == this._appsPage) + return ViewPage.APPS; + else + return ViewPage.SEARCH; + } +}); |