From f09197192805cbb28c1bcfd17aa8242142463f73 Mon Sep 17 00:00:00 2001
From: Michael Jumper <mike.jumper@guac-dev.org>
Date: Tue, 22 Apr 2014 17:50:12 -0700
Subject: [PATCH] GUAC-326: Remove GuacUI component object. Make OSK global.

---
 .../src/main/webapp/scripts/client-ui.js      |  56 ++---
 guacamole/src/main/webapp/scripts/guac-ui.js  | 195 ------------------
 2 files changed, 14 insertions(+), 237 deletions(-)

diff --git a/guacamole/src/main/webapp/scripts/client-ui.js b/guacamole/src/main/webapp/scripts/client-ui.js
index e4caf128e..85750ea2e 100644
--- a/guacamole/src/main/webapp/scripts/client-ui.js
+++ b/guacamole/src/main/webapp/scripts/client-ui.js
@@ -25,23 +25,6 @@
  */
 GuacUI.Client = {
 
-    /**
-     * Collection of all Guacamole client UI states.
-     */
-    "states": {
-
-        /**
-         * The normal default Guacamole client UI mode
-         */
-        "INTERACTIVE"      : 0,
-
-        /**
-         * Same as INTERACTIVE except with visible on-screen keyboard.
-         */
-        "OSK"              : 1
-
-    },
-
     /**
      * Enumeration of all tunnel-specific error messages for each applicable
      * error code.
@@ -261,9 +244,8 @@ GuacUI.Client = {
  * which sends key events to the Guacamole client.
  * 
  * @constructor
- * @augments GuacUI.Component
  */
-GuacUI.Client.OnScreenKeyboard = function() {
+GuacUI.Client.OnScreenKeyboard = new (function() {
 
     /**
      * Event target. This is a hidden textarea element which will receive
@@ -290,15 +272,21 @@ GuacUI.Client.OnScreenKeyboard = function() {
     }
 
     keyboard.onkeydown = function(keysym) {
-        GuacUI.Client.attachedClient.sendKeyEvent(1, keysym);
+        if (GuacUI.Client.attachedClient)
+            GuacUI.Client.attachedClient.sendKeyEvent(1, keysym);
     };
 
     keyboard.onkeyup = function(keysym) {
-        GuacUI.Client.attachedClient.sendKeyEvent(0, keysym);
+        if (GuacUI.Client.attachedClient)
+            GuacUI.Client.attachedClient.sendKeyEvent(0, keysym);
     };
 
     this.show = function() {
 
+        // Only add if not already present
+        if (keyboard_container.parentNode === document.body)
+            return;
+
         // Show keyboard
         document.body.appendChild(keyboard_container);
 
@@ -317,6 +305,10 @@ GuacUI.Client.OnScreenKeyboard = function() {
 
     this.hide = function() {
 
+        // Only remove if present
+        if (keyboard_container.parentNode !== document.body)
+            return;
+
         // Hide keyboard
         document.body.removeChild(keyboard_container);
         window.clearInterval(keyboard_resize_interval);
@@ -324,24 +316,7 @@ GuacUI.Client.OnScreenKeyboard = function() {
 
     };
 
-};
-
-GuacUI.Client.OnScreenKeyboard.prototype = new GuacUI.Component();
-
-/*
- * Show on-screen keyboard during OSK mode only.
- */
-
-GuacUI.StateManager.registerComponent(
-    new GuacUI.Client.OnScreenKeyboard(),
-    GuacUI.Client.states.OSK
-);
-
-/*
- * Set initial state
- */
-
-GuacUI.StateManager.setState(GuacUI.Client.states.INTERACTIVE);
+})();
 
 /**
  * Modal status display. Displays a message to the user, covering the entire
@@ -351,7 +326,6 @@ GuacUI.StateManager.setState(GuacUI.Client.states.INTERACTIVE);
  * components is impossible.
  * 
  * @constructor
- * @augments GuacUI.Component
  */
 GuacUI.Client.ModalStatus = function(title_text, text, classname, reconnect) {
 
@@ -430,8 +404,6 @@ GuacUI.Client.ModalStatus = function(title_text, text, classname, reconnect) {
 
 };
 
-GuacUI.Client.ModalStatus.prototype = new GuacUI.Component();
-
 /**
  * Monitors a given element for touch events, firing drag-specific events
  * based on pre-defined gestures.
diff --git a/guacamole/src/main/webapp/scripts/guac-ui.js b/guacamole/src/main/webapp/scripts/guac-ui.js
index ede090b68..e23b554a7 100644
--- a/guacamole/src/main/webapp/scripts/guac-ui.js
+++ b/guacamole/src/main/webapp/scripts/guac-ui.js
@@ -262,201 +262,6 @@ GuacUI.Video = new (function() {
 
 })();
 
-/**
- * Central registry of all components for all states.
- */
-GuacUI.StateManager = new (function() {
-
-    /**
-     * The current state.
-     */
-    var current_state = null;
-
-    /**
-     * Array of arrays of components, indexed by the states they are in.
-     */
-    var components = [];
-
-    /**
-     * Registers the given component with this state manager, to be shown
-     * during the given states.
-     * 
-     * @param {GuacUI.Component} component The component to register.
-     * @param {Number} [...] The list of states this component should be
-     *                       visible during.
-     */
-    this.registerComponent = function(component) {
-
-        // For each state specified, add the given component
-        for (var i=1; i<arguments.length; i++) {
-
-            // Get specified state
-            var state = arguments[i];
-
-            // Get array of components in that state
-            var component_array = components[state];
-            if (!component_array)
-                component_array = components[state] = [];
-
-            // Add component
-            component_array.push(component);
-
-        }
-
-    };
-
-    function allComponents(components, name) {
-
-        // Invoke given function on all components in array
-        for (var i=0; i<components.length; i++)
-            components[i][name]();
-
-    }
-
-    /**
-     * Sets the current visible state.
-     */
-    this.setState = function(state) {
-
-        // Hide components in current state
-        if (current_state && components[current_state])
-            allComponents(components[current_state], "hide");
-
-        // Show all components in new state
-        current_state = state;
-        if (components[state])
-            allComponents(components[state], "show");
-
-    };
-
-    /**
-     * Returns the current visible state.
-     */
-    this.getState = function() {
-        return current_state;
-    };
-
-})();
-
-/**
- * Abstract component which can be registered with GuacUI and shown or hidden
- * dynamically based on interface mode.
- * 
- * @constructor
- */
-GuacUI.Component = function() {
-
-    /**
-     * Called whenever this component needs to be shown and activated.
-     * @event
-     */
-    this.onshow = null;
-
-    /**
-     * Called whenever this component needs to be hidden and deactivated.
-     * @event
-     */
-    this.onhide = null;
-
-};
-
-/**
- * A Guacamole UI component which can be repositioned by dragging.
- * 
- * @constructor
- * @augments GuacUI.Component
- */
-GuacUI.DraggableComponent = function(element) {
-
-    var draggable_component = this;
-
-    var position_x = 0;
-    var position_y = 0;
-
-    var start_x = 0;
-    var start_y = 0;
-
-    /*
-     * Record drag start when finger hits element
-     */
-    if (element)
-        element.addEventListener("touchstart", function(e) {
-            
-            if (e.touches.length == 1) {
-
-                start_x = e.touches[0].screenX;
-                start_y = e.touches[0].screenY;
-
-            }
-       
-            e.stopPropagation();
-       
-        }, true);
-
-    /*
-     * Update position based on last touch
-     */
-    if (element)
-        element.addEventListener("touchmove", function(e) {
-            
-            if (e.touches.length == 1) {
-                
-                var new_x = e.touches[0].screenX;
-                var new_y = e.touches[0].screenY;
-
-                position_x += new_x - start_x;
-                position_y += new_y - start_y;
-
-                start_x = new_x;
-                start_y = new_y;
-
-                // Move magnifier to new position
-                draggable_component.move(position_x, position_y);
-
-            }
-            
-            e.preventDefault();
-            e.stopPropagation();
-
-        }, true);
-
-    if (element)
-        element.addEventListener("touchend", function(e) {
-            e.stopPropagation();
-        }, true);
-            
-    /**
-     * Moves this component to the specified location relative to its normal
-     * position.
-     * 
-     * @param {Number} x The X coordinate in pixels.
-     * @param {Number} y The Y coordinate in pixels.
-     */
-    this.move = function(x, y) {
-
-        element.style.WebkitTransform =
-        element.style.MozTransform =
-        element.style.OTransform =
-        element.style.msTransform =
-        element.style.transform = "translate("
-            + x + "px, " + y + "px)";
-
-        if (draggable_component.onmove)
-            draggable_component.onmove(x, y);
-
-    };
-
-    /**
-     * Trigered whenever this element is moved.
-     * 
-     * @event
-     * @param {Number} x The new X coordinate.
-     * @param {Number} y The new Y coordinate.
-     */
-    this.onmove = null;
-
-};
-
 /**
  * A connection UI object which can be easily added to a list of connections
  * for sake of display.