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+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2012 Joel Martin
+ * Copyright (C) 2013 Samuel Mannehed for Cendio AB
+ * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
+ */
+
+/*jslint browser: true, white: false */
+/*global window, Util */
+
+/* [module]
+ * import Util from "../util";
+ * import KeyboardUtil from "./util";
+ */
+
+/* [module] export */ var Keyboard;
+
+(function () {
+ "use strict";
+
+ //
+ // Keyboard event handler
+ //
+
+ Keyboard = function (defaults) {
+ this._keyDownList = []; // List of depressed keys
+ // (even if they are happy)
+
+ Util.set_defaults(this, defaults, {
+ 'target': document,
+ 'focused': true
+ });
+
+ // create the keyboard handler
+ this._handler = new KeyboardUtil.KeyEventDecoder(KeyboardUtil.ModifierSync(),
+ KeyboardUtil.VerifyCharModifier( /* jshint newcap: false */
+ KeyboardUtil.TrackKeyState(
+ KeyboardUtil.EscapeModifiers(this._handleRfbEvent.bind(this))
+ )
+ )
+ ); /* jshint newcap: true */
+
+ // keep these here so we can refer to them later
+ this._eventHandlers = {
+ 'keyup': this._handleKeyUp.bind(this),
+ 'keydown': this._handleKeyDown.bind(this),
+ 'keypress': this._handleKeyPress.bind(this),
+ 'blur': this._allKeysUp.bind(this)
+ };
+ };
+
+ Keyboard.prototype = {
+ // private methods
+
+ _handleRfbEvent: function (e) {
+ if (this._onKeyPress) {
+ Util.Debug("onKeyPress " + (e.type == 'keydown' ? "down" : "up") +
+ ", keysym: " + e.keysym.keysym + "(" + e.keysym.keyname + ")");
+ this._onKeyPress(e);
+ }
+ },
+
+ setQEMUVNCKeyboardHandler: function () {
+ this._handler = new KeyboardUtil.QEMUKeyEventDecoder(KeyboardUtil.ModifierSync(),
+ KeyboardUtil.TrackQEMUKeyState(
+ this._handleRfbEvent.bind(this)
+ )
+ );
+ },
+
+ _handleKeyDown: function (e) {
+ if (!this._focused) { return true; }
+
+ if (this._handler.keydown(e)) {
+ // Suppress bubbling/default actions
+ Util.stopEvent(e);
+ return false;
+ } else {
+ // Allow the event to bubble and become a keyPress event which
+ // will have the character code translated
+ return true;
+ }
+ },
+
+ _handleKeyPress: function (e) {
+ if (!this._focused) { return true; }
+
+ if (this._handler.keypress(e)) {
+ // Suppress bubbling/default actions
+ Util.stopEvent(e);
+ return false;
+ } else {
+ // Allow the event to bubble and become a keyPress event which
+ // will have the character code translated
+ return true;
+ }
+ },
+
+ _handleKeyUp: function (e) {
+ if (!this._focused) { return true; }
+
+ if (this._handler.keyup(e)) {
+ // Suppress bubbling/default actions
+ Util.stopEvent(e);
+ return false;
+ } else {
+ // Allow the event to bubble and become a keyPress event which
+ // will have the character code translated
+ return true;
+ }
+ },
+
+ _allKeysUp: function () {
+ Util.Debug(">> Keyboard.allKeysUp");
+ this._handler.releaseAll();
+ Util.Debug("<< Keyboard.allKeysUp");
+ },
+
+ // Public methods
+
+ grab: function () {
+ //Util.Debug(">> Keyboard.grab");
+ var c = this._target;
+
+ c.addEventListener('keydown', this._eventHandlers.keydown);
+ c.addEventListener('keyup', this._eventHandlers.keyup);
+ c.addEventListener('keypress', this._eventHandlers.keypress);
+
+ // Release (key up) if window loses focus
+ window.addEventListener('blur', this._eventHandlers.blur);
+
+ //Util.Debug("<< Keyboard.grab");
+ },
+
+ ungrab: function () {
+ //Util.Debug(">> Keyboard.ungrab");
+ var c = this._target;
+
+ c.removeEventListener('keydown', this._eventHandlers.keydown);
+ c.removeEventListener('keyup', this._eventHandlers.keyup);
+ c.removeEventListener('keypress', this._eventHandlers.keypress);
+ window.removeEventListener('blur', this._eventHandlers.blur);
+
+ // Release (key up) all keys that are in a down state
+ this._allKeysUp();
+
+ //Util.Debug(">> Keyboard.ungrab");
+ },
+
+ sync: function (e) {
+ this._handler.syncModifiers(e);
+ }
+ };
+
+ Util.make_properties(Keyboard, [
+ ['target', 'wo', 'dom'], // DOM element that captures keyboard input
+ ['focused', 'rw', 'bool'], // Capture and send key events
+
+ ['onKeyPress', 'rw', 'func'] // Handler for key press/release
+ ]);
+})();
+
+/* [module] export */ var Mouse;
+
+(function () {
+ Mouse = function (defaults) {
+ this._mouseCaptured = false;
+
+ this._doubleClickTimer = null;
+ this._lastTouchPos = null;
+
+ // Configuration attributes
+ Util.set_defaults(this, defaults, {
+ 'target': document,
+ 'focused': true,
+ 'scale': 1.0,
+ 'touchButton': 1
+ });
+
+ this._eventHandlers = {
+ 'mousedown': this._handleMouseDown.bind(this),
+ 'mouseup': this._handleMouseUp.bind(this),
+ 'mousemove': this._handleMouseMove.bind(this),
+ 'mousewheel': this._handleMouseWheel.bind(this),
+ 'mousedisable': this._handleMouseDisable.bind(this)
+ };
+ };
+
+ Mouse.prototype = {
+ // private methods
+ _captureMouse: function () {
+ // capturing the mouse ensures we get the mouseup event
+ if (this._target.setCapture) {
+ this._target.setCapture();
+ }
+
+ // some browsers give us mouseup events regardless,
+ // so if we never captured the mouse, we can disregard the event
+ this._mouseCaptured = true;
+ },
+
+ _releaseMouse: function () {
+ if (this._target.releaseCapture) {
+ this._target.releaseCapture();
+ }
+ this._mouseCaptured = false;
+ },
+
+ _resetDoubleClickTimer: function () {
+ this._doubleClickTimer = null;
+ },
+
+ _handleMouseButton: function (e, down) {
+ if (!this._focused) { return true; }
+
+ if (this._notify) {
+ this._notify(e);
+ }
+
+ var evt = (e ? e : window.event);
+ var pos = Util.getEventPosition(e, this._target, this._scale);
+
+ var bmask;
+ if (e.touches || e.changedTouches) {
+ // Touch device
+
+ // When two touches occur within 500 ms of each other and are
+ // close enough together a double click is triggered.
+ if (down == 1) {
+ if (this._doubleClickTimer === null) {
+ this._lastTouchPos = pos;
+ } else {
+ clearTimeout(this._doubleClickTimer);
+
+ // When the distance between the two touches is small enough
+ // force the position of the latter touch to the position of
+ // the first.
+
+ var xs = this._lastTouchPos.x - pos.x;
+ var ys = this._lastTouchPos.y - pos.y;
+ var d = Math.sqrt((xs * xs) + (ys * ys));
+
+ // The goal is to trigger on a certain physical width, the
+ // devicePixelRatio brings us a bit closer but is not optimal.
+ var threshold = 20 * (window.devicePixelRatio || 1);
+ if (d < threshold) {
+ pos = this._lastTouchPos;
+ }
+ }
+ this._doubleClickTimer = setTimeout(this._resetDoubleClickTimer.bind(this), 500);
+ }
+ bmask = this._touchButton;
+ // If bmask is set
+ } else if (evt.which) {
+ /* everything except IE */
+ bmask = 1 << evt.button;
+ } else {
+ /* IE including 9 */
+ bmask = (evt.button & 0x1) + // Left
+ (evt.button & 0x2) * 2 + // Right
+ (evt.button & 0x4) / 2; // Middle
+ }
+
+ if (this._onMouseButton) {
+ Util.Debug("onMouseButton " + (down ? "down" : "up") +
+ ", x: " + pos.x + ", y: " + pos.y + ", bmask: " + bmask);
+ this._onMouseButton(pos.x, pos.y, down, bmask);
+ }
+ Util.stopEvent(e);
+ return false;
+ },
+
+ _handleMouseDown: function (e) {
+ this._captureMouse();
+ this._handleMouseButton(e, 1);
+ },
+
+ _handleMouseUp: function (e) {
+ if (!this._mouseCaptured) { return; }
+
+ this._handleMouseButton(e, 0);
+ this._releaseMouse();
+ },
+
+ _handleMouseWheel: function (e) {
+ if (!this._focused) { return true; }
+
+ if (this._notify) {
+ this._notify(e);
+ }
+
+ var evt = (e ? e : window.event);
+ var pos = Util.getEventPosition(e, this._target, this._scale);
+ var wheelData = evt.detail ? evt.detail * -1 : evt.wheelDelta / 40;
+ var bmask;
+ if (wheelData > 0) {
+ bmask = 1 << 3;
+ } else {
+ bmask = 1 << 4;
+ }
+
+ if (this._onMouseButton) {
+ this._onMouseButton(pos.x, pos.y, 1, bmask);
+ this._onMouseButton(pos.x, pos.y, 0, bmask);
+ }
+ Util.stopEvent(e);
+ return false;
+ },
+
+ _handleMouseMove: function (e) {
+ if (! this._focused) { return true; }
+
+ if (this._notify) {
+ this._notify(e);
+ }
+
+ var evt = (e ? e : window.event);
+ var pos = Util.getEventPosition(e, this._target, this._scale);
+ if (this._onMouseMove) {
+ this._onMouseMove(pos.x, pos.y);
+ }
+ Util.stopEvent(e);
+ return false;
+ },
+
+ _handleMouseDisable: function (e) {
+ if (!this._focused) { return true; }
+
+ var evt = (e ? e : window.event);
+ var pos = Util.getEventPosition(e, this._target, this._scale);
+
+ /* Stop propagation if inside canvas area */
+ if ((pos.realx >= 0) && (pos.realy >= 0) &&
+ (pos.realx < this._target.offsetWidth) &&
+ (pos.realy < this._target.offsetHeight)) {
+ //Util.Debug("mouse event disabled");
+ Util.stopEvent(e);
+ return false;
+ }
+
+ return true;
+ },
+
+
+ // Public methods
+ grab: function () {
+ var c = this._target;
+
+ if ('ontouchstart' in document.documentElement) {
+ c.addEventListener('touchstart', this._eventHandlers.mousedown);
+ window.addEventListener('touchend', this._eventHandlers.mouseup);
+ c.addEventListener('touchend', this._eventHandlers.mouseup);
+ c.addEventListener('touchmove', this._eventHandlers.mousemove);
+ } else {
+ c.addEventListener('mousedown', this._eventHandlers.mousedown);
+ window.addEventListener('mouseup', this._eventHandlers.mouseup);
+ c.addEventListener('mouseup', this._eventHandlers.mouseup);
+ c.addEventListener('mousemove', this._eventHandlers.mousemove);
+ c.addEventListener((Util.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel',
+ this._eventHandlers.mousewheel);
+ }
+
+ /* Work around right and middle click browser behaviors */
+ document.addEventListener('click', this._eventHandlers.mousedisable);
+ document.body.addEventListener('contextmenu', this._eventHandlers.mousedisable);
+ },
+
+ ungrab: function () {
+ var c = this._target;
+
+ if ('ontouchstart' in document.documentElement) {
+ c.removeEventListener('touchstart', this._eventHandlers.mousedown);
+ window.removeEventListener('touchend', this._eventHandlers.mouseup);
+ c.removeEventListener('touchend', this._eventHandlers.mouseup);
+ c.removeEventListener('touchmove', this._eventHandlers.mousemove);
+ } else {
+ c.removeEventListener('mousedown', this._eventHandlers.mousedown);
+ window.removeEventListener('mouseup', this._eventHandlers.mouseup);
+ c.removeEventListener('mouseup', this._eventHandlers.mouseup);
+ c.removeEventListener('mousemove', this._eventHandlers.mousemove);
+ c.removeEventListener((Util.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel',
+ this._eventHandlers.mousewheel);
+ }
+
+ /* Work around right and middle click browser behaviors */
+ document.removeEventListener('click', this._eventHandlers.mousedisable);
+ document.body.removeEventListener('contextmenu', this._eventHandlers.mousedisable);
+
+ }
+ };
+
+ Util.make_properties(Mouse, [
+ ['target', 'ro', 'dom'], // DOM element that captures mouse input
+ ['notify', 'ro', 'func'], // Function to call to notify whenever a mouse event is received
+ ['focused', 'rw', 'bool'], // Capture and send mouse clicks/movement
+ ['scale', 'rw', 'float'], // Viewport scale factor 0.0 - 1.0
+
+ ['onMouseButton', 'rw', 'func'], // Handler for mouse button click/release
+ ['onMouseMove', 'rw', 'func'], // Handler for mouse movement
+ ['touchButton', 'rw', 'int'] // Button mask (1, 2, 4) for touch devices (0 means ignore clicks)
+ ]);
+})();
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