354 lines
12 KiB
JavaScript
354 lines
12 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Clutter = imports.gi.Clutter;
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const Gdk = imports.gi.Gdk;
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const Gio = imports.gi.Gio;
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const GLib = imports.gi.GLib;
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const Lang = imports.lang;
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const Meta = imports.gi.Meta;
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const Pango = imports.gi.Pango;
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const St = imports.gi.St;
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const Shell = imports.gi.Shell;
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const Signals = imports.signals;
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const Atk = imports.gi.Atk;
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const Params = imports.misc.params;
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const Layout = imports.ui.layout;
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const Lightbox = imports.ui.lightbox;
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const Main = imports.ui.main;
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const Tweener = imports.ui.tweener;
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const OPEN_AND_CLOSE_TIME = 0.1;
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const FADE_OUT_DIALOG_TIME = 1.0;
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const State = {
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OPENED: 0,
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CLOSED: 1,
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OPENING: 2,
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CLOSING: 3,
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FADED_OUT: 4
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};
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const ModalDialog = new Lang.Class({
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Name: 'ModalDialog',
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_init: function(params) {
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params = Params.parse(params, { shellReactive: false,
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styleClass: null,
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parentActor: Main.uiGroup,
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keybindingMode: Shell.KeyBindingMode.SYSTEM_MODAL,
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shouldFadeIn: true });
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this.state = State.CLOSED;
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this._hasModal = false;
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this._keybindingMode = params.keybindingMode;
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this._shellReactive = params.shellReactive;
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this._shouldFadeIn = params.shouldFadeIn;
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this._group = new St.Widget({ visible: false,
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x: 0,
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y: 0,
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accessible_role: Atk.Role.DIALOG });
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params.parentActor.add_actor(this._group);
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let constraint = new Clutter.BindConstraint({ source: global.stage,
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coordinate: Clutter.BindCoordinate.ALL });
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this._group.add_constraint(constraint);
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this._group.connect('destroy', Lang.bind(this, this._onGroupDestroy));
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this._pressedKey = null;
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this._buttonKeys = {};
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this._group.connect('key-press-event', Lang.bind(this, this._onKeyPressEvent));
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this._group.connect('key-release-event', Lang.bind(this, this._onKeyReleaseEvent));
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this._backgroundBin = new St.Bin();
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this._monitorConstraint = new Layout.MonitorConstraint();
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this._backgroundBin.add_constraint(this._monitorConstraint);
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this._group.add_actor(this._backgroundBin);
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this.dialogLayout = new St.BoxLayout({ style_class: 'modal-dialog',
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vertical: true });
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if (params.styleClass != null) {
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this.dialogLayout.add_style_class_name(params.styleClass);
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}
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if (!this._shellReactive) {
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this._lightbox = new Lightbox.Lightbox(this._group,
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{ inhibitEvents: true });
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this._lightbox.highlight(this._backgroundBin);
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let stack = new Shell.Stack();
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this._backgroundBin.child = stack;
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this._eventBlocker = new Clutter.Actor({ reactive: true });
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stack.add_actor(this._eventBlocker);
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stack.add_actor(this.dialogLayout);
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} else {
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this._backgroundBin.child = this.dialogLayout;
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}
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this.contentLayout = new St.BoxLayout({ vertical: true });
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this.dialogLayout.add(this.contentLayout,
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{ x_fill: true,
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y_fill: true,
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x_align: St.Align.MIDDLE,
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y_align: St.Align.START });
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this.buttonLayout = new St.BoxLayout({ style_class: 'modal-dialog-button-box',
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vertical: false });
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this.dialogLayout.add(this.buttonLayout,
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{ expand: true,
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x_align: St.Align.MIDDLE,
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y_align: St.Align.END });
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global.focus_manager.add_group(this.dialogLayout);
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this._initialKeyFocus = this.dialogLayout;
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this._initialKeyFocusDestroyId = 0;
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this._savedKeyFocus = null;
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},
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destroy: function() {
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this._group.destroy();
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},
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clearButtons: function() {
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this.buttonLayout.destroy_all_children();
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this._buttonKeys = {};
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},
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setButtons: function(buttons) {
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this.clearButtons();
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for (let i = 0; i < buttons.length; i++) {
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let buttonInfo = buttons[i];
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let x_alignment;
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if (buttons.length == 1)
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x_alignment = St.Align.END;
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else if (i == 0)
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x_alignment = St.Align.START;
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else if (i == buttons.length - 1)
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x_alignment = St.Align.END;
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else
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x_alignment = St.Align.MIDDLE;
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this.addButton(buttonInfo, { expand: true,
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x_fill: false,
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y_fill: false,
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x_align: x_alignment,
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y_align: St.Align.MIDDLE });
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}
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},
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addButton: function(buttonInfo, layoutInfo) {
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let label = buttonInfo['label'];
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let action = buttonInfo['action'];
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let key = buttonInfo['key'];
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let isDefault = buttonInfo['default'];
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let keys;
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if (key)
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keys = [key];
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else if (isDefault)
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keys = [Clutter.KEY_Return, Clutter.KEY_KP_Enter, Clutter.KEY_ISO_Enter];
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else
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keys = [];
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let button = new St.Button({ style_class: 'modal-dialog-button',
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button_mask: St.ButtonMask.ONE | St.ButtonMask.THREE,
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reactive: true,
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can_focus: true,
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label: label });
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button.connect('clicked', action);
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buttonInfo['button'] = button;
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if (isDefault)
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button.add_style_pseudo_class('default');
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if (!this._initialKeyFocusDestroyId)
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this._initialKeyFocus = button;
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for (let i in keys)
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this._buttonKeys[keys[i]] = buttonInfo;
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this.buttonLayout.add(button, layoutInfo);
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return button;
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},
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_onKeyPressEvent: function(object, event) {
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this._pressedKey = event.get_key_symbol();
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},
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_onKeyReleaseEvent: function(object, event) {
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let pressedKey = this._pressedKey;
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this._pressedKey = null;
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let symbol = event.get_key_symbol();
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if (symbol != pressedKey)
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return false;
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let buttonInfo = this._buttonKeys[symbol];
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if (!buttonInfo)
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return false;
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let button = buttonInfo['button'];
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let action = buttonInfo['action'];
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if (action && button.reactive) {
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action();
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return true;
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}
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return false;
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},
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_onGroupDestroy: function() {
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this.emit('destroy');
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},
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_fadeOpen: function(onPrimary) {
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if (onPrimary)
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this._monitorConstraint.primary = true;
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else
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this._monitorConstraint.index = global.screen.get_current_monitor();
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this.state = State.OPENING;
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this.dialogLayout.opacity = 255;
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if (this._lightbox)
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this._lightbox.show();
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this._group.opacity = 0;
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this._group.show();
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Tweener.addTween(this._group,
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{ opacity: 255,
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time: this._shouldFadeIn ? OPEN_AND_CLOSE_TIME : 0,
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transition: 'easeOutQuad',
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onComplete: Lang.bind(this,
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function() {
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this.state = State.OPENED;
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this.emit('opened');
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})
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});
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},
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setInitialKeyFocus: function(actor) {
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if (this._initialKeyFocusDestroyId)
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this._initialKeyFocus.disconnect(this._initialKeyFocusDestroyId);
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this._initialKeyFocus = actor;
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this._initialKeyFocusDestroyId = actor.connect('destroy', Lang.bind(this, function() {
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this._initialKeyFocus = this.dialogLayout;
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this._initialKeyFocusDestroyId = 0;
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}));
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},
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open: function(timestamp, onPrimary) {
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if (this.state == State.OPENED || this.state == State.OPENING)
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return true;
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if (!this.pushModal({ timestamp: timestamp }))
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return false;
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this._fadeOpen(onPrimary);
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return true;
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},
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close: function(timestamp) {
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if (this.state == State.CLOSED || this.state == State.CLOSING)
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return;
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this.state = State.CLOSING;
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this.popModal(timestamp);
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this._savedKeyFocus = null;
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Tweener.addTween(this._group,
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{ opacity: 0,
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time: OPEN_AND_CLOSE_TIME,
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transition: 'easeOutQuad',
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onComplete: Lang.bind(this,
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function() {
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this.state = State.CLOSED;
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this._group.hide();
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this.emit('closed');
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})
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});
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},
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// Drop modal status without closing the dialog; this makes the
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// dialog insensitive as well, so it needs to be followed shortly
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// by either a close() or a pushModal()
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popModal: function(timestamp) {
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if (!this._hasModal)
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return;
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let focus = global.stage.key_focus;
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if (focus && this._group.contains(focus))
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this._savedKeyFocus = focus;
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else
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this._savedKeyFocus = null;
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Main.popModal(this._group, timestamp);
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global.gdk_screen.get_display().sync();
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this._hasModal = false;
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if (!this._shellReactive)
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this._eventBlocker.raise_top();
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},
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pushModal: function (timestamp) {
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if (this._hasModal)
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return true;
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if (!Main.pushModal(this._group, { timestamp: timestamp,
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keybindingMode: this._keybindingMode }))
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return false;
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this._hasModal = true;
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if (this._savedKeyFocus) {
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this._savedKeyFocus.grab_key_focus();
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this._savedKeyFocus = null;
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} else
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this._initialKeyFocus.grab_key_focus();
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if (!this._shellReactive)
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this._eventBlocker.lower_bottom();
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return true;
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},
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// This method is like close, but fades the dialog out much slower,
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// and leaves the lightbox in place. Once in the faded out state,
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// the dialog can be brought back by an open call, or the lightbox
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// can be dismissed by a close call.
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//
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// The main point of this method is to give some indication to the user
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// that the dialog reponse has been acknowledged but will take a few
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// moments before being processed.
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// e.g., if a user clicked "Log Out" then the dialog should go away
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// imediately, but the lightbox should remain until the logout is
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// complete.
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_fadeOutDialog: function(timestamp) {
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if (this.state == State.CLOSED || this.state == State.CLOSING)
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return;
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if (this.state == State.FADED_OUT)
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return;
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this.popModal(timestamp);
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Tweener.addTween(this.dialogLayout,
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{ opacity: 0,
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time: FADE_OUT_DIALOG_TIME,
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transition: 'easeOutQuad',
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onComplete: Lang.bind(this,
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function() {
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this.state = State.FADED_OUT;
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})
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});
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}
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});
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Signals.addSignalMethods(ModalDialog.prototype);
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