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guacamole-client/guacamole/src/main/webapp/app/clipboard/directives/guacClipboard.js

109 lines
3.6 KiB
JavaScript

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/**
* A directive provides an editor whose contents are exposed via a
* ClipboardData object via the "data" attribute. If this data should also be
* synced to the local clipboard, or sent via a connected Guacamole client
* using a "guacClipboard" event, it is up to external code to do so.
*/
angular.module('clipboard').directive('guacClipboard', ['$injector',
function guacClipboard($injector) {
// Required types
var ClipboardData = $injector.get('ClipboardData');
/**
* Configuration object for the guacClipboard directive.
*
* @type Object.<String, Object>
*/
var config = {
restrict : 'E',
replace : true,
templateUrl : 'app/clipboard/templates/guacClipboard.html'
};
// Scope properties exposed by the guacClipboard directive
config.scope = {
/**
* The data to display within the field provided by this directive. This
* data will modified or replaced when the user manually alters the
* contents of the field.
*
* @type ClipboardData
*/
data : '='
};
// guacClipboard directive controller
config.controller = ['$scope', '$injector', '$element',
function guacClipboardController($scope, $injector, $element) {
/**
* The DOM element which will contain the clipboard contents within the
* user interface provided by this directive.
*
* @type Element
*/
var element = $element[0];
/**
* Rereads the contents of the clipboard field, updating the
* ClipboardData object on the scope as necessary. The type of data
* stored within the ClipboardData object will be heuristically
* determined from the HTML contents of the clipboard field.
*/
var updateClipboardData = function updateClipboardData() {
// Read contents of clipboard textarea
$scope.$evalAsync(function assignClipboardText() {
$scope.data = new ClipboardData({
type : 'text/plain',
data : element.value
});
});
};
// Update the internally-stored clipboard data when events are fired
// that indicate the clipboard field may have been changed
element.addEventListener('input', updateClipboardData);
element.addEventListener('change', updateClipboardData);
// Watch clipboard for new data, updating the clipboard textarea as
// necessary
$scope.$watch('data', function clipboardDataChanged(data) {
// If the clipboard data is a string, render it as text
if (typeof data.data === 'string')
element.value = data.data;
// Ignore other data types for now
}); // end $scope.data watch
}];
return config;
}]);