// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*- /* * Copyright 2017 Red Hat, Inc * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ /* exported AuthList */ const { Clutter, GObject, Meta, St } = imports.gi; const SCROLL_ANIMATION_TIME = 500; const AuthListItem = GObject.registerClass({ Signals: { 'activate': {} }, }, class AuthListItem extends St.Button { _init(key, text) { this.key = key; const label = new St.Label({ text, style_class: 'login-dialog-auth-list-label', y_align: Clutter.ActorAlign.CENTER, x_expand: false, }); super._init({ style_class: 'login-dialog-auth-list-item', button_mask: St.ButtonMask.ONE | St.ButtonMask.THREE, can_focus: true, child: label, reactive: true, }); this.connect('key-focus-in', () => this._setSelected(true)); this.connect('key-focus-out', () => this._setSelected(false)); this.connect('notify::hover', () => this._setSelected(this.hover)); this.connect('clicked', this._onClicked.bind(this)); } _onClicked() { this.emit('activate'); } _setSelected(selected) { if (selected) { this.add_style_pseudo_class('selected'); this.grab_key_focus(); } else { this.remove_style_pseudo_class('selected'); } } }); var AuthList = GObject.registerClass({ Signals: { 'activate': { param_types: [GObject.TYPE_STRING] }, 'item-added': { param_types: [AuthListItem.$gtype] }, }, }, class AuthList extends St.BoxLayout { _init() { super._init({ vertical: true, style_class: 'login-dialog-auth-list-layout', x_align: Clutter.ActorAlign.START, y_align: Clutter.ActorAlign.CENTER, }); this.label = new St.Label({ style_class: 'login-dialog-auth-list-title' }); this.add_child(this.label); this._scrollView = new St.ScrollView({ style_class: 'login-dialog-auth-list-view', }); this._scrollView.set_policy( St.PolicyType.NEVER, St.PolicyType.AUTOMATIC); this.add_child(this._scrollView); this._box = new St.BoxLayout({ vertical: true, style_class: 'login-dialog-auth-list', pseudo_class: 'expanded', }); this._scrollView.add_actor(this._box); this._items = new Map(); this.connect('key-focus-in', this._moveFocusToItems.bind(this)); } _moveFocusToItems() { let hasItems = this.numItems > 0; if (!hasItems) return; if (global.stage.get_key_focus() !== this) return; let focusSet = this.navigate_focus(null, St.DirectionType.TAB_FORWARD, false); if (!focusSet) { const laters = global.compositor.get_laters(); laters.add(Meta.LaterType.BEFORE_REDRAW, () => { this._moveFocusToItems(); return false; }); } } _onItemActivated(activatedItem) { this.emit('activate', activatedItem.key); } scrollToItem(item) { let box = item.get_allocation_box(); let adjustment = this._scrollView.get_vscroll_bar().get_adjustment(); let value = (box.y1 + adjustment.step_increment / 2.0) - (adjustment.page_size / 2.0); adjustment.ease(value, { duration: SCROLL_ANIMATION_TIME, mode: Clutter.AnimationMode.EASE_OUT_QUAD, }); } addItem(key, text) { this.removeItem(key); let item = new AuthListItem(key, text); this._box.add(item); this._items.set(key, item); item.connect('activate', this._onItemActivated.bind(this)); // Try to keep the focused item front-and-center item.connect('key-focus-in', () => this.scrollToItem(item)); this._moveFocusToItems(); this.emit('item-added', item); } removeItem(key) { if (!this._items.has(key)) return; let item = this._items.get(key); item.destroy(); this._items.delete(key); } get numItems() { return this._items.size; } clear() { this.label.text = ''; this._box.destroy_all_children(); this._items.clear(); } });