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/*
* Copyright (c) 2014 ThoughtWorks, Inc.
*
* Pixelated is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pixelated 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
*/
define([
'flight/lib/component',
'page/events',
'features'
],
function (defineComponent, events, features) {
'use strict';
function recipientsInput() {
var EXIT_KEY_CODE_MAP = {
8: 'backspace',
37: 'left'
},
ENTER_ADDRESS_KEY_CODE_MAP = {
9: 'tab',
186: 'semicolon',
188: 'comma',
13: 'enter',
27: 'esc'
},
EVENT_FOR = {
8: events.ui.recipients.deleteLast,
37: events.ui.recipients.selectLast
},
self;
var simpleAddressMatch = /[^<\w,;]?([^\s<;,]+@[\w-]+\.[^\s>;,]+)/;
var canonicalAddressMatch = /([^,;\s][^,;@]+<[^\s;,]+@[\w-]+\.[^\s;,]+>)/;
var emailAddressMatch = new RegExp([simpleAddressMatch.source, '|', canonicalAddressMatch.source].join(''), 'g');
var extractContactNames = function (response) {
return _.map(response, function(a) { return { value: a }; });
};
function createEmailCompleter() {
var emailCompleter = new Bloodhound({
datumTokenizer: function (d) {
return [d.value];
},
queryTokenizer: function (q) {
return [q.trim()];
},
remote: {
url: '/contacts?q=%QUERY',
filter: extractContactNames
}
});
emailCompleter.initialize();
return emailCompleter;
}
function reset(node) {
node.typeahead('val', '');
}
function caretIsInTheBeginningOfInput(input) {
return input.selectionStart === 0;
}
function isExitKey(keyPressed) {
return EXIT_KEY_CODE_MAP.hasOwnProperty(keyPressed);
}
function isEnterAddressKey(keyPressed) {
return ENTER_ADDRESS_KEY_CODE_MAP.hasOwnProperty(keyPressed);
}
this.processSpecialKey = function (event) {
var keyPressed = event.which;
if (isExitKey(keyPressed) && caretIsInTheBeginningOfInput(this.$node[0])) {
this.trigger(EVENT_FOR[keyPressed]);
return;
}
if (!event.shiftKey && isEnterAddressKey(keyPressed)) {
this.tokenizeRecipient(event);
if ((keyPressed !== 9 /* tab */)) {
event.preventDefault();
}
}
};
this.tokenizeRecipient = function (event) {
if (_.isEmpty(this.$node.val().trim())) {
return;
}
this.recipientSelected(null, {value: this.$node.val() });
event.preventDefault();
};
this.recipientSelected = function (event, data) {
var value = (data && data.value) || this.$node.val();
var validAddresses = this.extractValidAddresses(value);
var invalidAddresses = this.extractInvalidAddresses(value);
this.triggerEventForEach(validAddresses, events.ui.recipients.entered);
this.triggerEventForEach(invalidAddresses, events.ui.recipients.enteredInvalid);
reset(this.$node);
};
this.triggerEventForEach = function (addresses, event) {
var that = this;
_.each(addresses, function(address) {
if (!_.isEmpty(address.trim())) {
that.trigger(that.$node, event, { name: that.attr.name, address: address.trim() });
}
});
};
this.extractValidAddresses = function(rawAddresses) {
return rawAddresses.match(emailAddressMatch);
};
this.extractInvalidAddresses = function(rawAddresses) {
return rawAddresses.replace(emailAddressMatch, '').split(/[,;]/);
};
this.init = function () {
this.$node.typeahead({
hint: true,
highlight: true,
minLength: 1
}, {
source: createEmailCompleter().ttAdapter(),
templates: {
suggestion: function (o) { return _.escape(o.value); }
}
});
};
this.attachAndReturn = function (node, name) {
var input = new this.constructor();
input.initialize(node, { name: name});
return input;
};
this.warnSendButtonOfInputState = function () {
var toTrigger = _.isEmpty(this.$node.val()) ? events.ui.recipients.inputFieldIsEmpty : events.ui.recipients.inputFieldHasCharacters;
this.trigger(document, toTrigger, { name: this.attr.name });
};
this.after('initialize', function () {
self = this;
this.init();
this.on('typeahead:selected typeahead:autocompleted', this.recipientSelected);
this.on(this.$node, 'focusout', this.tokenizeRecipient);
this.on(this.$node, 'keydown', this.processSpecialKey);
this.on(this.$node, 'keyup', this.warnSendButtonOfInputState);
this.on(document, events.dispatchers.rightPane.clear, this.teardown);
});
}
return defineComponent(recipientsInput);
}
);
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