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cloudstack/console-proxy/js/ajaxviewer.js

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/**
* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
*
* This software is licensed under the GNU General Public License v3 or later.
*
* It is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or any later version.
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
//
// AJAX console viewer
// Author
// Kelven Yang
// 11/18/2009
//
var g_logger;
function StringBuilder(initStr) {
this.strings = new Array("");
this.append(initStr);
}
StringBuilder.prototype = {
append : function (str) {
if (str) {
this.strings.push(str);
}
return this;
},
clear : function() {
this.strings.length = 1;
return this;
},
toString: function() {
return this.strings.join("");
}
};
function AjaxViewer(panelId, imageUrl, updateUrl, tileMap, width, height, tileWidth, tileHeight, rawKeyboard) {
// logging is disabled by default so that it won't have negative impact on performance
// however, a back door key-sequence can trigger to open the logger window, it is designed to help
// trouble-shooting
g_logger = new Logger();
g_logger.enable(false);
var ajaxViewer = this;
this.rawKeyboard = rawKeyboard;
this.imageLoaded = false;
this.fullImage = true;
this.imgUrl = imageUrl;
this.img = new Image();
$(this.img).attr('src', imageUrl).load(function() {
ajaxViewer.imageLoaded = true;
});
this.updateUrl = updateUrl;
this.tileMap = tileMap;
this.dirty = true;
this.width = width;
this.height = height;
this.tileWidth = tileWidth;
this.tileHeight = tileHeight;
this.maxTileZIndex = 1;
this.currentKeyboard = 0;
this.timer = 0;
this.eventQueue = [];
this.sendingEventInProgress = false;
this.lastClickEvent = { x: 0, y: 0, button: 0, modifiers: 0, time: new Date().getTime() };
if(window.onStatusNotify == undefined)
window.onStatusNotify = function(status) {};
this.panel = this.generateCanvas(panelId, width, height, tileWidth, tileHeight);
this.setupKeyCodeTranslationTable();
this.setupUIController();
}
AjaxViewer.prototype = {
// client event types
MOUSE_MOVE: 1,
MOUSE_DOWN: 2,
MOUSE_UP: 3,
KEY_PRESS: 4,
KEY_DOWN: 5,
KEY_UP: 6,
EVENT_BAG: 7,
MOUSE_DBLCLK: 8,
// use java AWT key modifier masks
SHIFT_KEY: 64,
CTRL_KEY: 128,
META_KEY: 256,
ALT_KEY: 512,
SHIFT_LEFT: 1024,
CTRL_LEFT: 2048,
ALT_LEFT: 4096,
// keycode
KEYCODE_SHIFT: 16,
KEYCODE_MULTIPLY: 106,
KEYCODE_ADD: 107,
KEYCODE_8: 56,
CHARCODE_NUMPAD_MULTIPLY: 42,
CHARCODE_NUMPAD_ADD: 43,
EVENT_QUEUE_MOUSE_EVENT: 1,
EVENT_QUEUE_KEYBOARD_EVENT: 2,
STATUS_RECEIVING: 1,
STATUS_RECEIVED: 2,
STATUS_SENDING: 3,
STATUS_SENT: 4,
setDirty: function(value) {
this.dirty = value;
},
isDirty: function() {
return this.dirty;
},
isImageLoaded: function() {
return this.imageLoaded;
},
refresh: function(imageUrl, tileMap, fullImage) {
var ajaxViewer = this;
var img = $(this.img);
this.fullImage = fullImage;
this.imgUrl=imageUrl;
img.attr('src', imageUrl).load(function() {
ajaxViewer.imageLoaded = true;
});
this.tileMap = tileMap;
},
resize: function(panelId, width, height, tileWidth, tileHeight) {
$(".canvas_tile", document.body).each(function() {
$(this).remove();
});
$("table", $("#" + panelId)).remove();
this.width = width;
this.height = height;
this.tileWidth = tileWidth;
this.tileHeight = tileHeight;
this.panel = this.generateCanvas(panelId, width, height, tileWidth, tileHeight);
},
start: function() {
var ajaxViewer = this;
this.timer = setInterval(function() { ajaxViewer.heartbeat(); }, 50);
$(document).bind("ajaxError", function(event, XMLHttpRequest, ajaxOptions, thrownError) {
ajaxViewer.onAjaxError(event, XMLHttpRequest, ajaxOptions, thrownError);
});
this.eventQueue = []; // reset event queue
this.sendingEventInProgress = false;
ajaxViewer.installMouseHook();
ajaxViewer.installKeyboardHook();
$(window).bind("resize", function() {
ajaxViewer.onWindowResize();
});
},
stop: function() {
clearInterval(this.timer);
this.deleteCanvas();
this.uninstallMouseHook();
this.uninstallKeyboardHook();
this.eventQueue = [];
this.sendingEventInProgress = false;
$(document).unbind("ajaxError");
$(window).unbind("resize");
},
sendMouseEvent: function(event, x, y, whichButton, modifiers) {
this.eventQueue.push({
type: this.EVENT_QUEUE_MOUSE_EVENT,
event: event,
x: x,
y: y,
code: whichButton,
modifiers: modifiers
});
this.checkEventQueue();
},
setupKeyCodeTranslationTable: function() {
this.keyCodeMap = {};
for(var i = 'a'.charCodeAt(); i < 'z'.charCodeAt(); i++)
this.keyCodeMap[i] = { code: 65 + i - 'a'.charCodeAt(), shift: false };
for(i = 'A'.charCodeAt(); i < 'Z'.charCodeAt(); i++)
this.keyCodeMap[i] = { code: 65 + i - 'A'.charCodeAt(), shift: true };
for(i = '0'.charCodeAt(); i < '9'.charCodeAt(); i++)
this.keyCodeMap[i] = { code: 48 + i - '0'.charCodeAt(), shift: false };
this.keyCodeMap['`'.charCodeAt()] = { code : 192, shift : false };
this.keyCodeMap['~'.charCodeAt()] = { code : 192, shift : true };
this.keyCodeMap[')'.charCodeAt()] = { code : 48, shift : true };
this.keyCodeMap['!'.charCodeAt()] = { code : 49, shift : true };
this.keyCodeMap['@'.charCodeAt()] = { code : 50, shift : true };
this.keyCodeMap['#'.charCodeAt()] = { code : 51, shift : true };
this.keyCodeMap['$'.charCodeAt()] = { code : 52, shift : true };
this.keyCodeMap['%'.charCodeAt()] = { code : 53, shift : true };
this.keyCodeMap['^'.charCodeAt()] = { code : 54, shift : true };
this.keyCodeMap['&'.charCodeAt()] = { code : 55, shift : true };
this.keyCodeMap['*'.charCodeAt()] = { code : 56, shift : true };
this.keyCodeMap['('.charCodeAt()] = { code : 57, shift : true };
this.keyCodeMap['-'.charCodeAt()] = { code : 109, shift : false };
this.keyCodeMap['_'.charCodeAt()] = { code : 109, shift : true };
this.keyCodeMap['='.charCodeAt()] = { code : 107, shift : false };
this.keyCodeMap['+'.charCodeAt()] = { code : 107, shift : true };
this.keyCodeMap['['.charCodeAt()] = { code : 219, shift : false };
this.keyCodeMap['{'.charCodeAt()] = { code : 219, shift : true };
this.keyCodeMap[']'.charCodeAt()] = { code : 221, shift : false };
this.keyCodeMap['}'.charCodeAt()] = { code : 221, shift : true };
this.keyCodeMap['\\'.charCodeAt()] = { code : 220, shift : false };
this.keyCodeMap['|'.charCodeAt()] = { code : 220, shift : true };
this.keyCodeMap[';'.charCodeAt()] = { code : 59, shift : false };
this.keyCodeMap[':'.charCodeAt()] = { code : 59, shift : true };
this.keyCodeMap['\''.charCodeAt()] = { code : 222 , shift : false };
this.keyCodeMap['"'.charCodeAt()] = { code : 222, shift : true };
this.keyCodeMap[','.charCodeAt()] = { code : 188 , shift : false };
this.keyCodeMap['<'.charCodeAt()] = { code : 188, shift : true };
this.keyCodeMap['.'.charCodeAt()] = { code : 190, shift : false };
this.keyCodeMap['>'.charCodeAt()] = { code : 190, shift : true };
this.keyCodeMap['/'.charCodeAt()] = { code : 191, shift : false };
this.keyCodeMap['?'.charCodeAt()] = { code : 191, shift : true };
},
setupUIController : function() {
var ajaxViewer = this;
var pullDownElement = $("#toolbar").find(".pulldown");
pullDownElement.hover(
function(e) {
var subMenu = pullDownElement.find("ul");
$("li.current").removeClass("current");
$("li:eq(" + ajaxViewer.currentKeyboard + ")", subMenu).addClass("current");
subMenu.css("z-index", "" + ajaxViewer.maxTileZIndex + 1).show();
return false;
},
function(e) {
pullDownElement.find("ul").hide();
return false;
}
);
$("#toolbar").find("a").each(function(i, val) {
$(val).click(function(e) {
var cmdLink = $(e.target).closest("a");
if(cmdLink.attr("cmd")) {
var cmd = cmdLink.attr("cmd");
ajaxViewer.onCommand(cmd);
}
});
});
},
onCommand : function(cmd) {
if(cmd == "keyboard_jp") {
$("#toolbar").find(".pulldown").find("ul").hide();
this.currentKeyboard = 1;
} else if(cmd == "keyboard_en") {
$("#toolbar").find(".pulldown").find("ul").hide();
this.currentKeyboard = 0;
} else if(cmd == "sendCtrlAltDel") {
this.sendKeyboardEvent(ajaxViewer.KEY_DOWN, 45, ajaxViewer.CTRL_KEY | ajaxViewer.ALT_KEY);
this.sendKeyboardEvent(ajaxViewer.KEY_UP, 45, ajaxViewer.CTRL_KEY | ajaxViewer.ALT_KEY);
} else if(cmd == "sendCtrlEsc") {
this.sendKeyboardEvent(ajaxViewer.KEY_DOWN, 17, 0);
this.sendKeyboardEvent(ajaxViewer.KEY_DOWN, 27, ajaxViewer.CTRL_KEY);
this.sendKeyboardEvent(ajaxViewer.KEY_UP, 27, ajaxViewer.CTRL_KEY);
this.sendKeyboardEvent(ajaxViewer.KEY_UP, 17, 0);
}
},
// Firefox on Mac OS X does not generate key-code for following keys
translateZeroKeycode: function() {
var len = this.eventQueue.length;
if(len > 1 && this.eventQueue[len - 2].type == this.EVENT_QUEUE_KEYBOARD_EVENT && this.eventQueue[len - 2].code == 0) {
switch(this.eventQueue[len - 1].code) {
case 95 : // underscore _
this.eventQueue[len - 2].code = 109;
break;
case 58 : // colon :
this.eventQueue[len - 2].code = 59;
break;
case 60 : // <
this.eventQueue[len - 2].code = 188;
break;
case 62 : // >
this.eventQueue[len - 2].code = 190;
break;
case 63 : // ?
this.eventQueue[len - 2].code = 191;
break;
case 124 : // |
this.eventQueue[len - 2].code = 220;
break;
case 126 : // ~
this.eventQueue[len - 2].code = 192;
break;
default :
g_logger.log(Logger.LEVEL_WARN, "Zero keycode detected for KEY-PRESS char code " + this.eventQueue[len - 1].code);
break;
}
}
},
//
// Firefox on Mac OS X does not send KEY-DOWN for repeated KEY-PRESS event
// IE on windows, when typing is fast, it will omit issuing KEY-DOWN event
//
translateImcompletedKeypress : function() {
var len = this.eventQueue.length;
if(len == 1 || !(this.eventQueue[len - 2].type == this.EVENT_QUEUE_KEYBOARD_EVENT && this.eventQueue[len - 2].event == this.KEY_DOWN)) {
var nSplicePos = Math.max(0, len - 2);
var keyPressEvent = this.eventQueue[len - 1];
if(!!this.keyCodeMap[keyPressEvent.code]) {
if(this.keyCodeMap[keyPressEvent.code].shift) {
this.eventQueue.splice(nSplicePos, 0, {
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_DOWN,
code: this.keyCodeMap[keyPressEvent.code].code,
modifiers: this.SHIFT_KEY
});
} else {
this.eventQueue.splice(nSplicePos, 0, {
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_DOWN,
code: this.keyCodeMap[keyPressEvent.code].code,
modifiers: 0
});
}
} else {
g_logger.log(Logger.LEVEL_WARN, "Keycode mapping is not defined to translate KEY-PRESS event for char code : " + keyPressEvent.code);
this.eventQueue.splice(nSplicePos, 0, {
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_DOWN,
code: keyPressEvent.code,
modifiers: keyPressEvent.modifiers
});
}
}
},
sendKeyboardEvent: function(event, code, modifiers) {
// back door to open logger window - CTRL-ATL-SHIFT+SPACE
if(code == 32 &&
(modifiers & this.SHIFT_KEY | this.CTRL_KEY | this.ALT_KEY) == (this.SHIFT_KEY | this.CTRL_KEY | this.ALT_KEY)) {
g_logger.enable(true);
g_logger.open();
}
var len;
g_logger.log(Logger.LEVEL_INFO, "Keyboard event: " + event + ", code: " + code + ", modifiers: " + modifiers + ', char: ' + String.fromCharCode(code));
this.eventQueue.push({
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: event,
code: code,
modifiers: modifiers
});
if(event == this.KEY_PRESS) {
this.translateZeroKeycode();
this.translateImcompletedKeypress();
}
if(this.rawKeyboard) {
if(event == this.KEY_PRESS) {
// special handling for key * in numeric pad area
if(code == this.CHARCODE_NUMPAD_MULTIPLY) {
len = this.eventQueue.length;
if(len >= 2) {
var origKeyDown = this.eventQueue[len - 2];
if(origKeyDown.type == this.EVENT_QUEUE_KEYBOARD_EVENT &&
origKeyDown.code == this.KEYCODE_MULTIPLY) {
this.eventQueue.splice(len - 2, 2, {
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_DOWN,
code: this.KEYCODE_SHIFT,
modifiers: 0
},
{
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_DOWN,
code: this.KEYCODE_8,
modifiers: this.SHIFT_KEY
},
{
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_UP,
code: this.KEYCODE_8,
modifiers: this.SHIFT_KEY
},
{
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_UP,
code: this.KEYCODE_SHIFT,
modifiers: 0
}
);
}
}
return;
}
// special handling for key + in numeric pad area
if(code == this.CHARCODE_NUMPAD_ADD) {
len = this.eventQueue.length;
if(len >= 2) {
var origKeyDown = this.eventQueue[len - 2];
if(origKeyDown.type == this.EVENT_QUEUE_KEYBOARD_EVENT &&
origKeyDown.code == this.KEYCODE_ADD) {
g_logger.log(Logger.LEVEL_INFO, "Detected + on numeric pad area, fake it");
this.eventQueue[len - 2].modifiers = this.SHIFT_KEY;
this.eventQueue[len - 1].modifiers = this.SHIFT_KEY;
this.eventQueue.splice(len - 2, 0, {
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_DOWN,
code: this.KEYCODE_SHIFT,
modifiers: this.SHIFT_KEY
});
this.eventQueue.push({
type: this.EVENT_QUEUE_KEYBOARD_EVENT,
event: this.KEY_UP,
code: this.KEYCODE_SHIFT,
modifiers: this.SHIFT_KEY
});
}
}
}
}
if(event != this.KEY_DOWN)
this.checkEventQueue();
} else {
this.checkEventQueue();
}
},
aggregateEvents: function() {
var ajaxViewer = this;
var aggratedQueue = [];
var aggregating = false;
var mouseX;
var mouseY;
$.each(ajaxViewer.eventQueue, function(index, item) {
if(item.type != ajaxViewer.EVENT_QUEUE_MOUSE_EVENT) {
aggratedQueue.push(item);
} else {
if(!aggregating) {
if(item.event == ajaxViewer.MOUSE_MOVE) {
aggregating = true;
mouseX = item.x;
mouseY = item.y;
} else {
aggratedQueue.push(item);
}
} else {
if(item.event == ajaxViewer.MOUSE_MOVE) {
// continue to aggregate mouse move event
mouseX = item.x;
mouseY = item.y;
} else {
aggratedQueue.push({
type: ajaxViewer.EVENT_QUEUE_MOUSE_EVENT,
event: ajaxViewer.MOUSE_MOVE,
x: mouseX,
y: mouseY,
code: 0,
modifiers: 0
});
aggregating = false;
aggratedQueue.push(item);
}
}
}
});
if(aggregating) {
aggratedQueue.push({
type: ajaxViewer.EVENT_QUEUE_MOUSE_EVENT,
event: ajaxViewer.MOUSE_MOVE,
x: mouseX,
y: mouseY,
code: 0,
modifiers: 0
});
}
this.eventQueue = aggratedQueue;
},
checkEventQueue: function() {
var ajaxViewer = this;
if(!this.sendingEventInProgress && this.eventQueue.length > 0) {
var sb = new StringBuilder();
sb.append(""+this.eventQueue.length).append("|");
$.each(this.eventQueue, function() {
var item = this;
if(item.type == ajaxViewer.EVENT_QUEUE_MOUSE_EVENT) {
sb.append(""+item.type).append("|");
sb.append(""+item.event).append("|");
sb.append(""+item.x).append("|");
sb.append(""+item.y).append("|");
sb.append(""+item.code).append("|");
sb.append(""+item.modifiers).append("|");
} else {
sb.append(""+item.type).append("|");
sb.append(""+item.event).append("|");
sb.append(""+item.code).append("|");
sb.append(""+item.modifiers).append("|");
}
});
this.eventQueue.length = 0;
var url = ajaxViewer.updateUrl + "&event=" + ajaxViewer.EVENT_BAG;
g_logger.log(Logger.LEVEL_TRACE, "Posting client event " + sb.toString() + "...");
ajaxViewer.sendingEventInProgress = true;
window.onStatusNotify(ajaxViewer.STATUS_SENDING);
$.post(url, {data: sb.toString()}, function(data, textStatus) {
g_logger.log(Logger.LEVEL_TRACE, "Client event " + sb.toString() + " is posted");
ajaxViewer.sendingEventInProgress = false;
window.onStatusNotify(ajaxViewer.STATUS_SENT);
ajaxViewer.checkUpdate();
}, 'html');
}
},
onAjaxError: function(event, XMLHttpRequest, ajaxOptions, thrownError) {
if(window.onClientError != undefined && jQuery.isFunction(window.onClientError)) {
window.onClientError();
}
},
onWindowResize: function() {
var offset = this.panel.offset();
var row = $('tr:first', this.panel);
var cell = $('td:first', row);
var tile = this.getTile(cell, 'tile');
var tileOffset = tile.offset();
var deltaX = offset.left - tileOffset.left;
var deltaY = offset.top - tileOffset.top;
if(deltaX != 0 || deltaY != 0) {
$(".canvas_tile").each(function() {
var offsetFrom = $(this).offset();
$(this).css('left', offsetFrom.left + deltaX).css('top', offsetFrom.top + deltaY);
});
}
},
deleteCanvas: function() {
$('.canvas_tile', $(document.body)).each(function() {
$(this).remove();
});
},
generateCanvas: function(wrapperDivId, width, height, tileWidth, tileHeight) {
var canvasParent = $('#' + wrapperDivId);
canvasParent.width(width);
canvasParent.height(height);
if(window.onCanvasSizeChange != undefined && jQuery.isFunction(window.onCanvasSizeChange))
window.onCanvasSizeChange(width, height);
var tableDef = '<table cellpadding="0px" cellspacing="0px">\r\n';
var i = 0;
var j = 0;
for(i = 0; i < Math.ceil((height + tileHeight - 1) / tileHeight); i++) {
var rowHeight = Math.min(height - i*tileHeight, tileHeight);
tableDef += '<tr style="height:' + rowHeight + 'px">\r\n';
for(j = 0; j < Math.ceil((width + tileWidth - 1) / tileWidth); j++) {
var colWidth = Math.min(width - j*tileWidth, tileWidth);
tableDef += '<td width="' + colWidth + 'px"></td>\r\n';
}
tableDef += '</tr>\r\n';
}
tableDef += '</table>\r\n';
return $(tableDef).appendTo(canvasParent);
},
getTile: function(cell, name) {
var clonedDiv = cell.data(name);
if(!clonedDiv) {
var offset = cell.offset();
var divDef = "<div class=\"canvas_tile\" style=\"z-index:1;position:absolute;overflow:hidden;width:" + cell.width() + "px;height:"
+ cell.height() + "px;left:" + offset.left + "px;top:" + offset.top+"px\"></div>";
clonedDiv = $(divDef).appendTo($(document.body));
cell.data(name, clonedDiv);
}
return clonedDiv;
},
initCell: function(cell) {
if(!cell.data("init")) {
cell.data("init", true);
cell.data("current", 0);
this.getTile(cell, "tile2");
this.getTile(cell, "tile");
}
},
displayCell: function(cell, bg) {
var div;
var divPrev;
if(!cell.data("current")) {
cell.data("current", 1);
divPrev = this.getTile(cell, "tile");
div = this.getTile(cell, "tile2");
} else {
cell.data("current", 0);
divPrev = this.getTile(cell, "tile2");
div = this.getTile(cell, "tile");
}
var zIndex = parseInt(divPrev.css("z-index")) + 1;
this.maxTileZIndex = Math.max(this.maxTileZIndex, zIndex);
div.css("z-index", zIndex);
div.css("background", bg);
},
updateTile: function() {
if(this.dirty) {
var ajaxViewer = this;
var tileWidth = this.tileWidth;
var tileHeight = this.tileHeight;
var imgUrl = this.imgUrl;
var panel = this.panel;
if(this.fullImage) {
$.each(this.tileMap, function() {
var i = $(this)[0];
var j = $(this)[1];
var row = $("TR:eq("+i+")", panel);
var cell = $("TD:eq("+j+")", row);
var attr = "url(" + imgUrl + ") -"+j*tileWidth+"px -"+i*tileHeight + "px";
ajaxViewer.initCell(cell);
ajaxViewer.displayCell(cell, attr);
});
} else {
$.each(this.tileMap, function(index) {
var i = $(this)[0];
var j = $(this)[1];
var offset = index*tileWidth;
var attr = "url(" + imgUrl + ") no-repeat -"+offset+"px 0px";
var row = $("TR:eq("+i+")", panel);
var cell = $("TD:eq("+j+")", row);
ajaxViewer.initCell(cell);
ajaxViewer.displayCell(cell, attr);
});
}
this.dirty = false;
}
},
heartbeat: function() {
this.checkEventQueue();
this.checkUpdate();
},
checkUpdate: function() {
if(!this.isDirty())
return;
if(this.isImageLoaded()) {
this.updateTile();
var url = this.updateUrl;
var ajaxViewer = this;
window.onStatusNotify(ajaxViewer.STATUS_RECEIVING);
$.getScript(url, function(data, textStatus) {
if(/^<html>/.test(data)) {
ajaxViewer.stop();
$(document.body).html(data);
} else {
eval(data);
ajaxViewer.setDirty(true);
window.onStatusNotify(ajaxViewer.STATUS_RECEIVED);
ajaxViewer.checkUpdate();
}
});
}
},
ptInPanel: function(pageX, pageY) {
var mainPanel = this.panel;
var offset = mainPanel.offset();
var x = pageX - offset.left;
var y = pageY - offset.top;
if(x < 0 || y < 0 || x > mainPanel.width() - 1 || y > mainPanel.height() - 1)
return false;
return true;
},
pageToPanel: function(pageX, pageY) {
var mainPanel = this.panel;
var offset = mainPanel.offset();
var x = pageX - offset.left;
var y = pageY - offset.top;
if(x < 0)
x = 0;
if(x > mainPanel.width() - 1)
x = mainPanel.width() - 1;
if(y < 0)
y = 0;
if(y > mainPanel.height() - 1)
y = mainPanel.height() - 1;
return { x: Math.ceil(x), y: Math.ceil(y) };
},
installMouseHook: function() {
var ajaxViewer = this;
var target = $(document);
target.mousemove(function(e) {
if(!ajaxViewer.ptInPanel(e.pageX, e.pageY))
return true;
var pt = ajaxViewer.pageToPanel(e.pageX, e.pageY);
ajaxViewer.onMouseMove(pt.x, pt.y);
e.stopPropagation();
return false;
});
target.mousedown(function(e) {
ajaxViewer.panel.parent().focus();
if(!ajaxViewer.ptInPanel(e.pageX, e.pageY))
return true;
var modifiers = ajaxViewer.getKeyModifiers(e);
var whichButton = e.button;
var pt = ajaxViewer.pageToPanel(e.pageX, e.pageY);
ajaxViewer.onMouseDown(pt.x, pt.y, whichButton, modifiers);
e.stopPropagation();
return false;
});
target.mouseup(function(e) {
if(!ajaxViewer.ptInPanel(e.pageX, e.pageY))
return true;
var modifiers = ajaxViewer.getKeyModifiers(e);
var whichButton = e.button;
var pt = ajaxViewer.pageToPanel(e.pageX, e.pageY);
ajaxViewer.onMouseUp(pt.x, pt.y, whichButton, modifiers);
e.stopPropagation();
return false;
});
// disable browser right-click context menu
target.bind("contextmenu", function() { return false; });
},
uninstallMouseHook : function() {
var target = $(document);
target.unbind("mousemove");
target.unbind("mousedown");
target.unbind("mouseup");
target.unbind("contextmenu");
},
requiresDefaultKeyProcess : function(e) {
switch(e.which) {
case 8 : // backspace
case 9 : // TAB
case 19 : // PAUSE/BREAK
case 20 : // CAPSLOCK
case 27 : // ESCAPE
case 16 : // SHIFT key
case 17 : // CTRL key
case 18 : // ALT key
case 33 : // PGUP
case 34 : // PGDN
case 35 : // END
case 36 : // HOME
case 37 : // LEFT
case 38 : // UP
case 39 : // RIGHT
case 40 : // DOWN
return false;
}
if(this.getKeyModifiers(e) == this.SHIFT_KEY)
return true;
if(this.getKeyModifiers(e) != 0)
return false;
return true;
},
installKeyboardHook: function() {
var ajaxViewer = this;
var target = $(document);
target.keypress(function(e) {
ajaxViewer.onKeyPress(e.which, ajaxViewer.getKeyModifiers(e));
e.stopPropagation();
if(ajaxViewer.requiresDefaultKeyProcess(e))
return true;
e.preventDefault();
return false;
});
target.keydown(function(e) {
ajaxViewer.onKeyDown(e.which, ajaxViewer.getKeyModifiers(e));
e.stopPropagation();
if(ajaxViewer.requiresDefaultKeyProcess(e))
return true;
e.preventDefault();
return false;
});
target.keyup(function(e) {
ajaxViewer.onKeyUp(e.which, ajaxViewer.getKeyModifiers(e));
e.stopPropagation();
if(ajaxViewer.requiresDefaultKeyProcess(e))
return true;
e.preventDefault();
return false;
});
},
uninstallKeyboardHook : function() {
var target = $(document);
target.unbind("keypress");
target.unbind("keydown");
target.unbind("keyup");
},
onMouseMove: function(x, y) {
this.sendMouseEvent(this.MOUSE_MOVE, x, y, 0, 0);
},
onMouseDown: function(x, y, whichButton, modifiers) {
this.sendMouseEvent(this.MOUSE_DOWN, x, y, whichButton, modifiers);
},
onMouseUp: function(x, y, whichButton, modifiers) {
this.sendMouseEvent(this.MOUSE_UP, x, y, whichButton, modifiers);
var curTick = new Date().getTime();
if(this.lastClickEvent.time && (curTick - this.lastClickEvent.time < 300)) {
this.onMouseDblClick(this.lastClickEvent.x, this.lastClickEvent.y,
this.lastClickEvent.button, this.lastClickEvent.modifiers);
}
this.lastClickEvent.x = x;
this.lastClickEvent.y = y;
this.lastClickEvent.button = whichButton;
this.lastClickEvent.modifiers = modifiers;
this.lastClickEvent.time = curTick;
},
onMouseDblClick: function(x, y, whichButton, modifiers) {
this.sendMouseEvent(this.MOUSE_DBLCLK, x, y, whichButton, modifiers);
},
onKeyPress: function(code, modifiers) {
this.sendKeyboardEvent(this.KEY_PRESS, code, modifiers);
},
onKeyDown: function(code, modifiers) {
this.sendKeyboardEvent(this.KEY_DOWN, code, modifiers);
},
onKeyUp: function(code, modifiers) {
this.sendKeyboardEvent(this.KEY_UP, code, modifiers);
},
getKeyModifiers: function(e) {
var modifiers = 0;
if(e.altKey)
modifiers |= this.ALT_KEY;
if(e.altLeft)
modifiers |= this.ALT_LEFT;
if(e.ctrlKey)
modifiers |= this.CTRL_KEY;
if(e.ctrlLeft)
modifiers |= this.CTRL_LEFT;
if(e.shiftKey)
modifiers |= this.SHIFT_KEY;
if(e.shiftLeft)
modifiers |= this.SHIFT_LEFT;
if(e.metaKey)
modifiers |= this.META_KEY;
return modifiers;
}
};
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