/
CMLParser.as
1344 lines (1051 loc) · 35 KB
/
CMLParser.as
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package com.gestureworks.cml.core
{
import com.gestureworks.cml.core.CMLDisplay; CMLDisplay;
import com.gestureworks.cml.core.*;
import com.gestureworks.cml.elements.*;
import com.gestureworks.cml.events.*;
import com.gestureworks.cml.interfaces.*;
import com.gestureworks.cml.layouts.*;
import com.gestureworks.cml.managers.*;
import com.gestureworks.cml.utils.*;
import com.gestureworks.core.*;
import com.gestureworks.interfaces.ITouchObject;
import com.greensock.events.LoaderEvent;
import com.greensock.loading.core.LoaderCore;
import com.greensock.loading.LoaderMax;
import flash.display.*;
import flash.events.*;
import flash.utils.*;
/**
* The CMLParser class parses cml files for run-time object construction
* and modification. It is called by the GestureWorks class when a cml file
* path is specified in the Constructor.
*
* @author Ideum
* @see com.gestureworks.cml.core.CMLObjectList
* @see com.gestureworks.cml.core.CMLDisplay
*/
public class CMLParser extends CMLCore
{
// private variables
//preprocess
private static var state:String;
private static var paths:Dictionary;
private static var data:Array = [];
private static var fileCnt:int;
//public variables
public static const COMPLETE:String = "COMPLETE";
public static var debug:Boolean = false;
public static var rootDirectory:String = "";
public static var rootHeader:String = "";
public static var relativePaths:Boolean = false;
public static var cssFile:String;
public static var cmlFile:String;
public static var cmlData:XML;
public static var cmlDisplay:Container;
public function CMLParser() {}
// legacy support, when CMLParser was a singleton
private static var _instance:*;
public static function get instance():* {return CMLParser;}
/**
* Initial parsing of the cml document
* @param xml
* @param parent
* @param properties
*/
public static function init(cml:XML, parent:*, properties:*=null):void
{
if (debug) trace('\n========================== CML Parser Initialized ===============================\n');
FileManager.init();
// required for TLF
XML.ignoreWhitespace = true;
XML.prettyPrinting = false;
cmlData = cml;
// set paths relative to main cml document
if (cml.@relativePaths == "true")
relativePaths = true;
// set root directory of file paths
if (cml.@rootDirectory != undefined && !relativePaths)
rootDirectory = cml.@rootDirectory;
else if (cml.@rootDirectory != undefined && relativePaths)
rootDirectory = relToAbsPath(rootDirectory.concat(cml.@rootDirectory));
else
rootDirectory = "";
rootDirectory = combinePaths(rootHeader, rootDirectory);
// set css file
var cssStr:String = "";
if (cml.@css != undefined)
cssStr = cml.@css;
if (cssStr.length) {
CMLParser.cssFile = updatePath(cssStr);
}
// set parent display
cmlDisplay = parent as Container;
// preprocess
preprocess(XMLList(cml));
}
// ************************************************** //
// *************** preprocess stages **************** //
// ************************************************** //
private static function preprocess(cml:XMLList):void
{
if (debug) trace("\n\n++ Preprocess Begin ++");
paths = new Dictionary;
paths["Include"] = [];
paths["Library"] = [];
paths["Media"] = [];
preprocessLoop(cml);
state = "Include";
processPaths(paths[state]);
}
private static function ppComplete():void
{
if (debug) trace("\n\n++ Preprocess Complete ++");
// process
process(XMLList(cmlData));
}
private static function preprocessLoop(cml:XMLList):void
{
var tag:String;
var i:int;
var j:int;
for (i = 0; i < cml.length(); i++) {
tag = cml[i].name();
if (!tag) {
if ( cml[i].toString().search(FileManager.cmlType) > -1 )
ppInclude(cml[i], cml[i].toString());
else if ( cml[i].toString().search(FileManager.mediaPreloadTypes) > -1 )
ppMedia(cml[i], cml[i].toString());
continue;
}
if (debug && tag == "cml") trace("");
if (debug) trace(dash(XMLList(cml[i])) + tag + "");
if (tag == "Preloader")
ppPreloaderKit(cml[i]);
else if (tag == "Include")
ppInclude(cml[i]);
else if (tag == "RenderKit")
ppRenderKit(cml[i]);
else if (tag == "LibraryKit" || tag == "Library")
ppLibraryKit(cml[i]);
else if (tag == "LayoutKit" || tag == "Layout")
ppLayoutKit(cml[i]);
else if (tag == "Stage")
cml[i].setName("StageKit");
else {
for each(var attr:* in cml[i].@ * ) {
ppMedia(attr);
}
}
if (cml[i].*.length() > 0)
preprocessLoop(cml[i].*);
}
}
private static function processPaths(p:Array):void
{
var cnt:int = 0;
for (var i:int = 0; i < p.length; i++) {
if (!FileManager.hasFile(p[i])) {
var loader:LoaderCore = FileManager.append(p[i]);
loader.addEventListener(LoaderEvent.COMPLETE, fileLoaded);
cnt++;
}
}
paths[state] = [];
if (cnt)
startQueue();
else
ppEval();
}
private static function startQueue():void
{
if (state == "Include") {
FileManager.cml.addEventListener(LoaderEvent.COMPLETE, filesLoaded);
FileManager.cml.load();
}
else if (state == "Library") {
FileManager.swf.addEventListener(LoaderEvent.COMPLETE, filesLoaded);
FileManager.swf.load();
}
else if (state == "Media") {
FileManager.media.addEventListener(LoaderEvent.COMPLETE, filesLoaded);
FileManager.media.load();
}
}
private static function fileLoaded(e:LoaderEvent):void
{
LoaderCore(e.target).removeEventListener(LoaderEvent.COMPLETE, fileLoaded);
if (debug) trace("0:" + fileCnt.toString(), "File loaded:", LoaderCore(e.target).name, LoaderCore(e.target).content);
if (state == "Include")
data.push(LoaderCore(e.target).content);
fileCnt++;
}
private static function filesLoaded(e:LoaderEvent):void
{
LoaderMax(e.target).removeEventListener(LoaderEvent.COMPLETE, filesLoaded);
if (debug) trace("0:*", "Files loaded");
if (state == "Include") {
for (var i:int = 0; i < data.length; i++) {
preprocessLoop(XMLList(data[i]));
}
data = [];
}
processPaths(paths[state]);
}
private static function ppEval():void
{
if (paths[state].length == 0) {
if (state == "Include") {
state = "Library";
processPaths(paths[state]);
return;
}
else if (state == "Library") {
state = "Media";
processPaths(paths[state]);
return;
}
else if (state == "Media"){
ppComplete();
return;
}
}
processPaths(paths[state]);
}
private static function ppPreloaderKit(cml:XML):void
{
if (cml.Preloader != undefined) {
var obj:Object = createObject(cml.name());
obj.parseCML();
obj.init();
}
}
private static function ppInclude(cml:XML, str:String=""):void
{
var path:String;
if (str.length)
path = str;
else {
if (cml.@src != undefined)
path = cml.@src;
else throw new Error("Include statement must contain the 'src' attribute");
}
if (!FileManager.isCML(path))
return;
path = updatePath(path);
if (paths["Include"].indexOf(path) == -1)
paths["Include"].push(path);
if (debug) trace("0: Include found: " + path);
}
private static function ppRenderKit(cml:XML):void
{
if (debug) trace("0: RenderKit found" );
var path:String;
if (cml.Renderer != undefined && cml.Renderer.@dataPath != undefined) {
path = cml.Renderer.@dataPath;
path = updatePath(path);
if (!FileManager.isCML(path)) return;
if (paths["Include"].indexOf(path) == -1)
paths["Include"].push(path);
if (debug) trace("0: Renderer dataPath found: " + path);
}
}
private static function ppLibraryKit(cml:XML):void
{
if (cml.name() != "Library") return;
if (cml.parent().name() != "LibraryKit") return;
var path:String = cml.@src;
if (!FileManager.isLibrary(path)) return;
if (paths["Library"].indexOf(path) == -1)
paths["Library"].push(path);
if (debug) trace("0: Library found: " + path);
}
private static function ppLayoutKit(cml:XML):void
{
if (cml.name() != "Layout") return;
if (cml.parent().name() != "LayoutKit") return;
LayoutKit.instance.parseCML(XMLList(cml));
if (debug) trace("0: Layout found: " + cml.@ref);
}
private static function ppMedia(cml:XML, str:String=""):void
{
var path:String;
if (str.length)
path = str;
else
path = cml;
path = updatePath(path);
if (!FileManager.isPreloadMedia(path)) return;
if (paths["Media"].indexOf(path) == -1)
paths["Media"].push(path);
if (debug) trace("0: Media found: " + path);
}
private static function dash(cml:XMLList):String
{
var str:String="-";
while (cml.parent()) {
str += "-"
cml = XMLList(cml.parent());
}
return str;
}
private static function updatePath(path:String):String
{
if (relativePaths && rootDirectory.length){
path = rootDirectory.concat(path);
path = relToAbsPath(path);
}
else if (rootDirectory.length)
path = rootDirectory.concat(path);
return path;
}
// ************************************************** //
// ***************** processing stages ************** //
// ************************************************** //
private static function process(cml:XMLList):void
{
if (debug) trace("\n\n++ Process Begin ++");
if (debug) trace("\n" + dash(XMLList(cml)) + "cml");
loopCML(cml.children(), cmlDisplay);
loadCSS();
}
/**
* Recursive CML parsing
* @param cml
* @param parent
* @param properties
*/
public static function loopCML(cml:XMLList, parent:*= null):void
{
var node:XML;
var tag:String;
var attr:String;
var obj:*;
var returned:XMLList=null;
for each (node in cml) {
tag = node.name();
if (debug) trace(dash(XMLList(node)) + tag + "");
if (tag == "Include") {
var path:String;
if (node.@src != undefined) {
path = updatePath(node.@src);
}
else if (node.@cml != undefined) { // Deprecated
path = updatePath(node.@cml);
}
if (FileManager.hasFile(path)) {
node = resolveIncludeVars(node, XML(FileManager.cml.getLoader(path).content).copy());
tag = node.name();
loopCML(node.*, parent);
}
continue;
}
else if (tag == "RenderKit") {
loopCML(pRenderKit(XML(node)), parent);
continue;
}
else if (tag == "DebugKit" || tag == "RendererData" || tag == "Filter" || tag == "Gesture"
|| tag == "GestureList" || tag == "LibraryKit" || tag == "Library" || tag == "LayoutKit"
|| tag == "Layout" || tag == "State" || tag == "Sound")
continue;
obj = createObject(tag);
//save render kit object states
if (node.@saveState != undefined) {
StateManager.registerRenderObject(obj);
delete node.@["saveState"];
}
// assign id
if (node.@id != undefined)
obj.id = node.@id;
// id defaults to name
else
obj.id = obj.name;
// assign class values
if (node.@['class'] != undefined)
obj.className = node.@['class'];
// run object's parse routine
returned = obj.parseCML(XMLList(node));
returned = parseFilter(obj, returned);
returned = parseGesture(obj, returned);
obj.postparseCML(XMLList(node));
//target state tag
StateManager.registerStateTag(obj, XMLList(node));
//target sound tag
SoundUtils.parseCML(obj, XMLList(node));
if ("childList" in parent)
parent.childList.append(obj.id, obj);
if (parent == cmlDisplay && obj is DisplayObject)
cmlDisplay.addChild(obj);
//recursion
if (returned && returned.length())
loopCML(returned, obj);
}
}
private static function resolveIncludeVars(main:XML, inc:XML):XML
{
var vars:Dictionary = new Dictionary(true);
var item:*;
var regExp:RegExp = /[\s\r\n{}]*/gim;
for each (item in main.@ * ) {
if (item != "src") {
vars["$" + String(item.name())] = item;
}
}
loopInc(XMLList(inc.*));
function loopInc(node:XMLList):void {
var val:String;
var name:String;
var item:*;
for each (var child:XML in node) {
for each (item in child.@*) {
val = String(item);
val = val.replace(regExp, ''); // strip optional {} characters
name = String(item.name());
if (vars[val]) {
child.@[name] = vars[val];
}
}
if (node.*.length()) {
loopInc(XMLList(node.*));
}
}
}
return inc;
}
private static function pRenderKit(renderKit:XML):XMLList
{
if (debug) trace("\n\n++ Loading RenderKit ++");
var regExp:RegExp = /[\s\r\n{}]*/gim;
var rendererData:XMLList = new XMLList;
var renderList:XMLList;
var cmlRenderer:XMLList;
var dataRootTag:String;
var dataPathExp:String;
var tmp:XMLList;
var ret:XMLList = new XMLList;
var max:int = int.MAX_VALUE;
var repeat:int = 1;
var j:int;
var i:int;
var q:int;
var nest:int;
for (q = 0; q < renderKit.Renderer.length(); q++) {
if (renderKit.Renderer.@dataPath == undefined)
rendererData = renderKit.RendererData;
else {
rendererData = XMLList(FileManager.fileList.getKey(String(renderKit.Renderer.@dataPath)).content)
if (rendererData.RenderKit == undefined) // makes RenderKit and Renderer optional on dataPath files
rendererData = XMLList(<cml><RenderKit><RendererData>{rendererData.*}</RendererData></RenderKit></cml>);
rendererData = rendererData.RenderKit.RendererData;
}
if (rendererData.Include != undefined) {
tmp = XMLList(<RendererData />);
for each (var node:* in rendererData.*) {
if (node.name() == "Include")
tmp.appendChild( XMLList(FileManager.fileList.getKey(String(node.@src)).content.children() ));
else
tmp.appendChild(node);
}
rendererData = tmp;
}
if (renderKit.Renderer.@max != undefined)
max = renderKit.Renderer.@max;
if (renderKit.Renderer.@repeat != undefined)
repeat = renderKit.Renderer.@repeat;
if (renderKit.Renderer.@dataRootTag == undefined) {
renderList = rendererData.*;
}
else {
dataRootTag = renderKit.Renderer.@dataRootTag;
renderList = rendererData.*.(name() == dataRootTag);
}
var len:int = (max < renderList.length()) ? max : renderList.length();
processStates(renderList, XMLList(renderKit.Renderer[q].*));
for (i = 0; i < repeat; i++) {
for (j = 0; j < len; j++) {
cmlRenderer = XMLList(renderKit.Renderer[q].*).copy();
loopRenderer(XMLList(renderList[j]), cmlRenderer);
ret += XMLList(cmlRenderer);
}
}
}
return ret;
}
private static function loopRenderer(renderList:XMLList, cmlRenderer:XMLList):void
{
var str:String;
var val:*;
var regExp:RegExp = /[\s\r\n{}]*/gim;
var level:int;
var i:int;
for (i = 0; i < cmlRenderer.length(); i++) {
if (cmlRenderer[i].name() == "Include") {
cmlRenderer[i] = XMLList(FileManager.fileList.getKey(String(cmlRenderer[i].@src))).copy();
cmlRenderer[i] = XMLList(cmlRenderer[i].children());
}
}
for each (var node:* in cmlRenderer) {
if (node.name()) {
//if (node.name() == "RenderKit") continue;
str = node.name().toString();
}
for each (val in renderList.*) {
if (node.nodeKind() == "text" ) {
str = node.toString();
// filter value for expression delimiter "{}"
if ( (str.charAt(0) == "{") && (str.charAt(str.length - 1) == "}") ) {
// remove whitespace and {} characters
str = str.replace(regExp, '');
}
if (str == val.name().toString()) {
var p : XML = node.parent();
var childIndex : int = node.childIndex();
p.children()[childIndex] = String(val.*);
}
}
for each (var attrVal:* in node.@*) {
var attr:* = attrVal.name();
str = String(attrVal);
// filter value for expression delimiter "{}"
if ( (str.charAt(0) == "{") && (str.charAt(str.length - 1) == "}") ) {
// remove whitepsace and {} characters
str = str.replace(regExp, '');
}
if ( str == String(val.name()) ) {
node.@[attr] = val;
}
}
}
if (node.*.length())
loopRenderer(renderList, node.*);
}
}
/**
* Save states of all nodes with stateId attribute.
* @param renderList render data objects
* @param cmlRenderer renderer objects
*/
private static function processStates(renderList:XMLList, cmlRenderer:XMLList):void {
for each(var node:XML in renderList) {
if (node.@stateId != undefined)
StateManager.saveRenderState(node, cmlRenderer);
}
}
private static function parseFilter(obj:*, node:XMLList):XMLList
{
var attrName:String;
var attrValue:*;
var filter:*;
var filterArray:Array = [];
for each (var item:XML in node) {
if (item.name() == "Filter") {
filter = createObject(item.@ref);
//apply attributes
for each (attrValue in item.@*) {
attrName = attrValue.name().toString();
if (attrValue == "true")
attrValue = true;
if (attrValue == "false")
attrValue = false;
if (attrName != "ref")
filter[attrName] = attrValue;
}
filterArray.push(filter.getFilter());
}
}
if (filterArray.length)
obj.filters = filterArray;
return node;
}
private static function parseGesture(obj:*, node:XMLList):XMLList
{
if (!(obj is ITouchObject)) {
if ("vto" in obj && obj.vto) {
obj = obj.vto;
}
else {
return node;
}
}
var tmp:XMLList;
if ( node.(name() == "GestureList").length() )
tmp = node;
else if ( node.(name() == "Gesture").length() ) {
tmp = XMLList(<GestureList />);
tmp.appendChild(XMLList(node.(name() == "Gesture")));
}
if (tmp && tmp.length)
obj.makeGestureList(tmp);
return node;
}
private static function loadCSS():void
{
if (debug) trace("\n\n++ Search for main CSS file ++");
if (cssFile && cssFile.length) {
if (debug) {
trace("CSS file found... loading: ", cssFile);;
CSSManager.instance.debug = false;
}
CSSManager.instance.addEventListener(FileEvent.CSS_LOADED, onCSSLoaded)
CSSManager.instance.loadCSS(cssFile);
}
else {
if (debug) trace("No CSS file found... skipping CSS parsing");
loadDisplay();
}
}
private static function onCSSLoaded(event:FileEvent):void
{
CSSManager.instance.removeEventListener(FileEvent.CSS_LOADED, onCSSLoaded)
if (debug) trace("CSS file load complete: ", cssFile);
CSSManager.instance.parseCSS(event.data);
loadDisplay();
}
/**
* Creates object from class name
* Returns a new object of the class
* @param tag
* @return
*/
public static function createObject(tag:String):Object
{
//new object reference
var obj:* = null;
var as3class:Class;
//search for package syntax
if (tag.indexOf('.') != -1)
{
//create object
try {
as3class = getDefinitionByName(tag) as Class;
obj = new as3class();
}
catch (e:Error){}
}
else
{
//begin search in core class list
obj = searchPackages(tag, CMLCore.packages);
//if search failed, throw an error
if (!obj) throw new Error(tag + " failed to load");
}
return obj;
}
/**
* Searches a class name from an array of packages
* Returns a new object of the class
* @param tag
* @param packageArray
* @return
*/
public static function searchPackages(tag:String, packageArray:Array):Object
{
var obj:* = null;
var as3class:Class;
//search package list
for (var i:int=0; i<packageArray.length; i++) {
try {
// auto-append period to package names, if not provided
if ( packageArray[i].length > 0) {
if ( packageArray[i].substr(packageArray[i].length - 1, packageArray[i].length) != "." ) {
packageArray[i] = packageArray[i] + ".";
//trace( packageArray[i] );
}
}
//create object
as3class = getDefinitionByName(packageArray[i] + tag) as Class;
obj = new as3class();
break;
}
catch (e:Error) {}
}
return obj;
}
/**
* Default parseCML routine
* @param obj
* @param cml
* @return
*/
public static function parseCML(obj:*, cml:XMLList):XMLList
{
addToObjectList(obj);
var returnNode:XMLList = new XMLList;
attrLoop(obj, cml);
if (cml.*.length() > 0)
returnNode = cml.*;
return returnNode;
}
/**
* Assigns cml index to object and adds object to global CMLObjectList
* @param obj
*/
public static function addToObjectList(obj:*):void {
// unique object identifier
obj.cmlIndex = CMLObjectList.instance.length;
// add to master object list
CMLObjectList.instance.append(obj.id, obj);
}
public static function attrLoop(obj:*, cml:XMLList):void
{
var attr:String;
var stateId:String;
for each (var attrValue:* in cml.@*) {
attr = attrValue.name().toString();
// check for css keyword
if (attr == "class")
attr = "className";
if (attrValue.search(FileManager.fileTypes) >= 0 && String(attrValue.charAt(0) != "{") ) {
// rootDirectory allows you to change root path
if (relativePaths && rootDirectory.length > 1) {
attrValue = rootDirectory.concat(attrValue);
attrValue = relToAbsPath(attrValue);
}
else if (rootDirectory.length) {
attrValue = rootDirectory.concat(attrValue);
}
}
if (attr == "stateId") {
stateId = attrValue;
}
obj.state[0][attr] = attrValue;
}
if (stateId) {
obj.state[stateId] = obj.state[0];
}
attr = null;
}
/**
* Converts relative to absolute path
* @param string
* @return
*/
public static function relToAbsPath(string:String):String
{
var newString:String;
var cnt:int = 0;
var arr:Array = string.split("/");
for (var i:int = arr.length-1; i >= 0; i--) {
if (i == arr.length - 1) {
newString = arr[i];
continue;
}
if (arr[i] == "..")
cnt++;
else if (cnt > 0)
cnt--;
else
newString = arr[i] + "/" + newString;
}
return newString;
}
public static function combinePaths(absPath:String, relPath:String):String {
if (absPath == "") {
return relPath;
}
if (relPath == "") {
return absPath;
}
var absArray:Array = absPath.split("/");
var relArray:Array = relPath.split("/");
var relCountToDelete:int = 0;
for (var i:int = 0; i < relArray.length; ++i) {
var relPart:String = relArray[i];
switch(relPart) {
case ".":
relCountToDelete++;
break;
case "..":
relCountToDelete++;
if (absArray.length > 0) {
var popped:String = absArray.pop();
while (popped == "" && absArray.length > 0) {
popped = absArray.pop();
}
}
break;
default:
break;
}
}
if(relCountToDelete > 0) {
relArray.splice(0, relCountToDelete);
}
var finalPath:String = absArray.join("\\") + "\\" + relArray.join("\\");
finalPath = finalPath.replace("\\\\", "\\");
return finalPath;
}
/**
* Default updateProperties routine
* @param obj
* @param stateKey
* @param stateObj
*/
public static function updateProperties(obj:*, stateKey:*=0, stateObj:*=null ):void
{
var propertyValue:String;
var objType:String;