gerrit/polygerrit-ui/app/elements/gr-reviewer-list.html
Andrew Bonventre 82361ef024 Implement add/remove reviewers with autocomplete
In a future patch it will make sense to break out the
autocomplete portion of this change to use with search
and other areas that may require it.

Feature: Issue 3679
Change-Id: I7e88c0bb4f75552b8e78d2556d77023fb2606d89
2016-01-05 16:30:24 +00:00

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<!--
Copyright (C) 2015 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<link rel="import" href="../bower_components/polymer/polymer.html">
<link rel="import" href="../bower_components/iron-a11y-keys-behavior/iron-a11y-keys-behavior.html">
<link rel="import" href="../bower_components/iron-input/iron-input.html">
<link rel="import" href="gr-ajax.html">
<link rel="import" href="gr-request.html">
<dom-module id="gr-reviewer-list">
<style>
:host {
display: block;
}
:host([disabled]) {
opacity: .8;
pointer-events: none;
}
.autocompleteContainer {
position: relative;
}
.inputContainer {
display: flex;
margin-top: .25em;
}
.inputContainer input {
flex: 1;
font: inherit;
}
.dropdown {
background-color: #fff;
box-shadow: 0 1px 3px rgba(0, 0, 0, .3);
position: absolute;
left: 0;
top: 100%;
}
.account {
cursor: pointer;
padding: .5em .75em;
}
.account[selected] {
background-color: #ccc;
}
.remove,
.cancel {
color: #999;
}
.remove {
font-size: .9em;
}
.cancel {
font-size: 2em;
line-height: 1;
padding: 0 .15em;
text-decoration: none;
}
</style>
<template>
<gr-ajax id="autocompleteXHR"
url="[[_computeAutocompleteURL(change)]]"
params="[[_computeAutocompleteParams(_inputVal)]]"
on-response="_handleResponse"></gr-ajax>
<template is="dom-repeat" items="[[_reviewers]]" as="reviewer">
<div class="reviewer">
<span>[[reviewer.name]]</span>
<span hidden$="[[!reviewer.email]]">
(<span>[[reviewer.email]]</span>)
</span>
<a class="remove"
href="#"
data-account-id$="[[reviewer._account_id]]"
on-tap="_handleRemoveTap"
hidden$="[[_computeCannotRemoveReviewer(reviewer, mutable)]]">remove</a>
</div>
</template>
<div class="controlsContainer" hidden$="[[!mutable]]">
<div class="autocompleteContainer" hidden$="[[!_showInput]]">
<div class="inputContainer">
<input is="iron-input" type="email" id="input"
bind-value="{{_inputVal}}" disabled$="[[disabled]]">
<a href="#" class="cancel" on-tap="_handleCancelTap">×</a>
</div>
<div class="dropdown" hidden$="[[_hideAutocomplete]]">
<template is="dom-repeat" items="[[_autocompleteData]]" as="account">
<div class="account"
data-index$="[[index]]"
on-mouseenter="_handleMouseEnterItem"
on-tap="_handleItemTap"
selected$="[[_computeSelected(index, _selectedIndex)]]">
<span>[[account.name]]</span>
<span hidden$="[[!account.email]]">
(<span>[[account.email]]</span>)
</span>
</div>
</template>
</div>
</div>
<a href="#" class="addReviewer" on-tap="_handleAddTap"
hidden$="[[_showInput]]">Add reviewer</a>
</div>
</template>
<script>
(function() {
'use strict';
Polymer({
is: 'gr-reviewer-list',
behaviors: [
Polymer.IronA11yKeysBehavior
],
properties: {
change: Object,
mutable: {
type: Boolean,
value: false,
},
keyEventTarget: {
type: Object,
value: function() {
return this;
},
},
disabled: {
type: Boolean,
value: false,
reflectToAttribute: true,
},
suggestFrom: {
type: Number,
value: 3,
},
_reviewers: {
type: Array,
value: function() { return []; },
},
_autocompleteData: {
type: Array,
value: function() { return []; },
observer: '_autocompleteDataChanged',
},
_inputVal: {
type: String,
value: '',
observer: '_inputValChanged',
},
_inputRequestHandle: Number,
_inputRequestTimeout: {
type: Number,
value: 250,
},
_showInput: {
type: Boolean,
value: false,
},
_hideAutocomplete: {
type: Boolean,
value: true,
observer: '_hideAutocompleteChanged',
},
_selectedIndex: {
type: Number,
value: 0,
},
_boundBodyClickHandler: {
type: Function,
value: function() {
return this._handleBodyClick.bind(this);
},
},
// Used for testing.
_lastAutocompleteRequest: Object,
_xhrPromise: Object,
},
keyBindings: {
'up down esc enter': '_handleKey',
},
observers: [
'_reviewersChanged(change.reviewers.*, change.owner)',
],
detached: function() {
this._clearInputRequestHandle();
},
_clearInputRequestHandle: function() {
if (this._inputRequestHandle != null) {
this.cancelAsync(this._inputRequestHandle);
this._inputRequestHandle = null;
}
},
_reviewersChanged: function(changeRecord, owner) {
var result = [];
var reviewers = changeRecord.base;
for (var key in reviewers) {
if (key == 'REVIEWER' || key == 'CC') {
result = result.concat(reviewers[key]);
}
}
this._reviewers = result.filter(function(reviewer) {
return reviewer._account_id != owner._account_id;
});
},
_computeCannotRemoveReviewer: function(reviewer, mutable) {
if (!mutable) { return true; }
for (var i = 0; i < this.change.removable_reviewers.length; i++) {
if (this.change.removable_reviewers[i]._account_id ==
reviewer._account_id) {
return false;
}
}
return true;
},
_computeAutocompleteURL: function(change) {
return '/changes/' + change._number + '/suggest_reviewers';
},
_computeAutocompleteParams: function(inputVal) {
return {
n: 10, // Return max 10 results
q: inputVal,
};
},
_computeSelected: function(index, selectedIndex) {
return index == selectedIndex;
},
_handleResponse: function(e) {
this._autocompleteData = e.detail.response.map(function(result) {
return result.account;
}).filter(function(account) {
for (var i = 0; i < this._reviewers.length; i++) {
if (account._account_id == this.change.owner._account_id ||
account._account_id == this._reviewers[i]._account_id) {
return false;
}
}
return true;
}, this);
},
_handleBodyClick: function(e) {
var eventPath = Polymer.dom(e).path;
for (var i = 0; i < eventPath.length; i++) {
if (eventPath[i] == this) {
return;
}
}
this._selectedIndex = -1;
this._autocompleteData = [];
},
_handleRemoveTap: function(e) {
e.preventDefault();
var target = Polymer.dom(e).rootTarget;
var accountID = parseInt(target.getAttribute('data-account-id'), 10);
this._send('DELETE', this._restEndpoint(accountID)).then(function(req) {
var reviewers = this.change.reviewers;
['REVIEWER', 'CC'].forEach(function(type) {
reviewers[type] = reviewers[type] || [];
for (var i = 0; i < reviewers[type].length; i++) {
if (reviewers[type][i]._account_id == accountID) {
this.splice('change.reviewers.' + type, i, 1);
break;
}
}
}, this);
}.bind(this)).catch(function(err) {
alert('Oops. Something went wrong. Check the console and bug the ' +
'PolyGerrit team for assistance.');
throw err;
}.bind(this));
},
_handleAddTap: function(e) {
e.preventDefault();
this._showInput = true;
this.$.input.focus();
},
_handleCancelTap: function(e) {
e.preventDefault();
this._showInput = false;
this._selectedIndex = 0;
this._inputVal = '';
this._autocompleteData = [];
},
_handleMouseEnterItem: function(e) {
this._selectedIndex =
parseInt(Polymer.dom(e).rootTarget.getAttribute('data-index'), 10);
},
_handleItemTap: function(e) {
var accountEl;
var eventPath = Polymer.dom(e).path;
for (var i = 0; i < eventPath.length; i++) {
if (eventPath[i].classList.contains('account')) {
accountEl = eventPath[i];
break;
}
}
this._selectedIndex =
parseInt(accountEl.getAttribute('data-index'), 10);
this._sendAddRequest();
},
_autocompleteDataChanged: function(data) {
this._hideAutocomplete = data.length == 0;
},
_hideAutocompleteChanged: function(hidden) {
if (hidden) {
document.body.removeEventListener('click',
this._boundBodyClickHandler);
this._selectedIndex = -1;
} else {
document.body.addEventListener('click', this._boundBodyClickHandler);
this._selectedIndex = 0;
}
},
_inputValChanged: function(val) {
var sendRequest = function() {
if (this.disabled || val == null || val.trim().length == 0) {
return;
}
if (val.length <= this.suggestFrom) {
this._clearInputRequestHandle();
this._hideAutocomplete = true;
this._selectedIndex = -1;
return;
}
this._lastAutocompleteRequest =
this.$.autocompleteXHR.generateRequest();
}.bind(this);
this._clearInputRequestHandle();
if (this._inputRequestTimeout == 0) {
sendRequest();
} else {
this._inputRequestHandle =
this.async(sendRequest, this._inputRequestTimeout);
}
},
_handleKey: function(e) {
if (this._hideAutocomplete) { return; }
e.preventDefault();
switch (e.detail.combo) {
case 'up':
this._selectedIndex = Math.max(this._selectedIndex - 1, 0);
break;
case 'down':
this._selectedIndex = Math.min(this._selectedIndex + 1,
this._autocompleteData.length - 1);
break;
case 'esc':
this._hideAutocomplete = true;
break;
case 'enter':
this._sendAddRequest();
break;
}
},
_sendAddRequest: function() {
this._clearInputRequestHandle();
// TODO(andybons): Support groups and non-email types.
var account = this._autocompleteData[this._selectedIndex];
if (account) {
this._inputVal = account.email;
}
this._autocompleteData = [];
this._send('POST', this._restEndpoint()).then(function(req) {
this.change.reviewers['CC'] = this.change.reviewers['CC'] || [];
req.response.reviewers.forEach(function(r) {
this.push('change.removable_reviewers', r);
this.push('change.reviewers.CC', r);
}, this);
this._inputVal = '';
this.$.input.focus();
}.bind(this)).catch(function(err) {
// TODO(andybons): Use the message returned by the server.
alert('Unable to add ' + this._inputVal + ' as a reviewer. ' +
'Are you sure the email is right?');
throw err;
}.bind(this));
},
_send: function(method, url) {
this.disabled = true;
var request = document.createElement('gr-request');
this._xhrPromise = request.send({
method: method,
url: url,
body: {reviewer: this._inputVal},
});
var enableEl = function() { this.disabled = false; }.bind(this);
this._xhrPromise.then(enableEl).catch(enableEl);
return this._xhrPromise;
},
_restEndpoint: function(id) {
var path = '/changes/' + this.change._number + '/reviewers';
if (id) {
path += '/' + id;
}
return path;
},
});
})();
</script>
</dom-module>