mirror of
https://github.com/gyurix1968/guacamole-client.git
synced 2025-09-10 07:01:21 +00:00
111 lines
3.4 KiB
JavaScript
111 lines
3.4 KiB
JavaScript
/*
|
|
* Copyright (C) 2013 Glyptodon LLC
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
/**
|
|
* Maintains state across multiple Guacamole pages via HTML5 Web Storage.
|
|
* @constructor
|
|
*/
|
|
function GuacamoleSessionState() {
|
|
|
|
/**
|
|
* Reference to this GuacamoleSessionState.
|
|
* @private
|
|
*/
|
|
var guac_state = this;
|
|
|
|
/**
|
|
* The last read state object.
|
|
* @private
|
|
*/
|
|
var state = localStorage.getItem("GUACAMOLE_STATE") || {};
|
|
|
|
/**
|
|
* Reloads the internal state, sending onchange events for all changed,
|
|
* deleted, or new properties.
|
|
*/
|
|
this.reload = function() {
|
|
|
|
// Pull current state
|
|
var new_state = JSON.parse(localStorage.getItem("GUACAMOLE_STATE") || "{}");
|
|
|
|
// Assign new state
|
|
var old_state = state;
|
|
state = new_state;
|
|
|
|
// Check if any values are different
|
|
for (var name in new_state) {
|
|
|
|
// If value changed, call handler
|
|
var old = old_state[name];
|
|
if (old != new_state[name]) {
|
|
|
|
// Call change handler
|
|
if (guac_state.onchange)
|
|
guac_state.onchange(state, new_state, name);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Sets the given property to the given value.
|
|
*
|
|
* @param {String} name The name of the property to change.
|
|
* @param value An arbitrary value.
|
|
*/
|
|
this.setProperty = function(name, value) {
|
|
state[name] = value;
|
|
localStorage.setItem("GUACAMOLE_STATE", JSON.stringify(state));
|
|
};
|
|
|
|
/**
|
|
* Returns the value stored under the property having the given name.
|
|
*
|
|
* @param {String} name The name of the property to read.
|
|
* @return The value of the given property.
|
|
*/
|
|
this.getProperty = function(name) {
|
|
return state[name];
|
|
};
|
|
|
|
/**
|
|
* Event which is fired whenever a property value is changed externally.
|
|
*
|
|
* @event
|
|
* @param old_state An object whose properties' values are the old values
|
|
* of this GuacamoleSessionState.
|
|
* @param new_state An object whose properties' values are the new values
|
|
* of this GuacamoleSessionState.
|
|
* @param {String} name The name of the property that is being changed.
|
|
*/
|
|
this.onchange = null;
|
|
|
|
// Reload when modified
|
|
window.addEventListener("storage", guac_state.reload, false);
|
|
|
|
// Initial load
|
|
guac_state.reload();
|
|
|
|
}
|