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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Polymer element for displaying a collapsable list of networks.
*/
/**
* Polymer class definition for 'network-list'.
*/
Polymer({
is: 'network-list',
properties: {
/**
* The list of network state properties for the items to display.
* @type {!Array<!OncMojo.NetworkStateProperties>}
*/
networks: {
type: Array,
value() {
return [];
},
},
/**
* The list of custom items to display after the list of networks.
* @type {!Array<!NetworkList.CustomItemState>}
*/
customItems: {
type: Array,
value() {
return [];
},
},
/** True if action buttons should be shown for the itmes. */
showButtons: {
type: Boolean,
value: false,
reflectToAttribute: true,
},
/** Whether to show technology badges on mobile network icons. */
showTechnologyBadge: {type: Boolean, value: true},
/**
* Reflects the iron-list selecteditem property.
* @type {!NetworkList.NetworkListItemType}
*/
selectedItem: {
type: Object,
observer: 'selectedItemChanged_',
},
/** Whether cellular activation is unavailable in the current context. */
activationUnavailable: Boolean,
/**
* DeviceState associated with the type of |networks| listed, or undefined
* if none was provided.
* @private {!OncMojo.DeviceStateProperties|undefined} deviceState
*/
deviceState: Object,
/**
* Contains |networks| + |customItems|.
* @private {!Array<!NetworkList.NetworkListItemType>}
*/
listItems_: {
type: Array,
value() {
return [];
},
},
/**
* Used by FocusRowBehavior to track the last focused element on a row.
* @private
*/
lastFocused_: Object,
/**
* Used by FocusRowBehavior to track if the list has been blurred.
* @private
*/
listBlurred_: Boolean,
},
behaviors: [CrScrollableBehavior, ListPropertyUpdateBehavior],
observers: ['updateListItems_(networks, customItems)'],
/** @type {ResizeObserver} used to observer size changes to this element */
resizeObserver_: null,
/** @override */
attached() {
// This is a required work around to get the iron-list to display on first
// view. Currently iron-list won't generate item elements on attach if the
// element is not visible. Because there are some instances where this
// component might not be visible when the items are bound, we listen for
// resize events and manually call notifyResize on the iron-list
this.resizeObserver_ = new ResizeObserver(entries => {
const networkList =
/** @type {IronListElement} */ (this.$$('#networkList'));
if (networkList) {
networkList.notifyResize();
}
});
this.resizeObserver_.observe(this);
},
/** @override */
detached() {
this.resizeObserver_.disconnect();
},
/** @private {boolean} */
focusRequested_: false,
focus() {
this.focusRequested_ = true;
this.focusFirstItem_();
},
/** @private */
updateListItems_: function() {
const beforeNetworks =
this.customItems.filter(n => n.showBeforeNetworksList === true);
const afterNetworks =
this.customItems.filter(n => n.showBeforeNetworksList === false);
const newList = beforeNetworks.concat(this.networks, afterNetworks);
this.updateList('listItems_', item => item.guid, newList);
this.updateScrollableContents();
if (this.focusRequested_) {
this.async(function() {
this.focusFirstItem_();
});
}
},
/** @private */
focusFirstItem_() {
// Select the first network-list-item if there is one.
const item = this.$$('network-list-item');
if (!item) {
return;
}
item.focus();
this.focusRequested_ = false;
},
});
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