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<!DOCTYPE html>
<!--
Copyright (c) 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.
-->
<link rel="import" href="/tracing/base/base.html">
<polymer-element name="tr-ui-b-dropdown">
<template>
<style>
:host {
position: relative;
display: flex;
}
#outer {
display: flex;
flex: 0 0 auto;
padding: 1px 4px 1px 4px;
-webkit-user-select: none;
cursor: default;
}
#state {
display: flex;
flex: 0 0 auto;
margin-left: 2px;
margin-right: 0px;
flex: 0 0 auto;
}
#icon {
display: flex;
flex: 0 0 auto;
flex: 0 0 auto;
}
dialog {
position: absolute;
padding: 0;
border: 0;
margin: 0;
}
dialog::backdrop {
background: rgba(0,0,0,.05);
}
#dialog-frame {
background-color: #fff;
display: flex;
flex-direction: column;
flex: 1 1 auto;
padding: 6px;
border: 1px solid black;
-webkit-user-select: none;
cursor: default;
}
</style>
<tr-ui-b-toolbar-button id="outer"
on-keydown="{{ onOuterKeyDown_ }}"
on-click="{{ onOuterClick_ }}">
<div id="icon">⚙</div>
<div id="state">▾</div>
</tr-ui-b-toolbar-button>
<dialog id="dialog"
on-click="{{ onDialogClick_ }}"
on-cancel="{{ onDialogCancel_ }}">
<div id="dialog-frame">
<content></content>
</div>
</dialog>
</template>
<script>
'use strict';
Polymer({
ready: function() {
this.$.outer.tabIndex = 0;
},
get iconElement() {
return this.$.icon;
},
onOuterKeyDown_: function(e) {
if (e.keyCode === ' '.charCodeAt(0)) {
this.toggle_();
e.preventDefault();
e.stopPropagation();
}
},
onOuterClick_: function(e) {
var or = this.$.outer.getBoundingClientRect();
var inside = true;
inside &= e.clientX >= or.left;
inside &= e.clientX < or.right;
inside &= e.clientY >= or.top;
inside &= e.clientY < or.bottom;
if (!inside)
return;
e.preventDefault();
this.toggle_();
},
toggle_: function() {
if (!this.isOpen)
this.show();
else
this.close();
},
show: function() {
if (this.isOpen)
return;
this.$.outer.classList.add('open');
var ddr = this.$.outer.getBoundingClientRect();
var rW = Math.max(ddr.width, 150);
this.$.dialog.style.minWidth = rW + 'px';
this.$.dialog.showModal();
var ddw = this.$.outer.getBoundingClientRect().width;
var w = this.$.dialog.getBoundingClientRect().width;
this.$.dialog.style.top = ddr.bottom - 1 + 'px';
this.$.dialog.style.left = ddr.left + 'px';
},
onDialogClick_: function(e) {
if (!this.isOpen)
return;
if (e.srcElement !== this.$.dialog)
return;
e.preventDefault();
this.close();
},
onDialogCancel_: function(e) {
e.preventDefault();
this.close();
},
close: function() {
if (!this.isOpen)
return;
this.$.dialog.close();
this.$.outer.classList.remove('open');
this.$.outer.focus();
},
get isOpen() {
return this.$.dialog.hasAttribute('open');
}
});
</script>
</polymer-element>
|
