build custom layer of Dojo to speed up loading of tt-rss (refs #293)

1 files changed, 131 insertions, 101 deletions

diff --git a/lib/dojo/window.js b/lib/dojo/window.js
index e6750dd70..c36eb4c23 100644
--- a/lib/dojo/window.js
+++ b/lib/dojo/window.js
@@ -5,109 +5,139 @@
 */
 
 
-if(!dojo._hasResource["dojo.window"]){
-dojo._hasResource["dojo.window"]=true;
+if(!dojo._hasResource["dojo.window"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojo.window"] = true;
 dojo.provide("dojo.window");
-dojo.window.getBox=function(){
-var _1=(dojo.doc.compatMode=="BackCompat")?dojo.body():dojo.doc.documentElement;
-var _2=dojo._docScroll();
-return {w:_1.clientWidth,h:_1.clientHeight,l:_2.x,t:_2.y};
-};
-dojo.window.get=function(_3){
-if(dojo.isIE&&window!==document.parentWindow){
-_3.parentWindow.execScript("document._parentWindow = window;","Javascript");
-var _4=_3._parentWindow;
-_3._parentWindow=null;
-return _4;
-}
-return _3.parentWindow||_3.defaultView;
+
+dojo.window.getBox = function(){
+	// summary:
+	//		Returns the dimensions and scroll position of the viewable area of a browser window
+
+	var scrollRoot = (dojo.doc.compatMode == 'BackCompat') ? dojo.body() : dojo.doc.documentElement;
+
+	// get scroll position
+	var scroll = dojo._docScroll(); // scrollRoot.scrollTop/Left should work
+	return { w: scrollRoot.clientWidth, h: scrollRoot.clientHeight, l: scroll.x, t: scroll.y };
 };
-dojo.window.scrollIntoView=function(_5,_6){
-try{
-_5=dojo.byId(_5);
-var _7=_5.ownerDocument||dojo.doc,_8=_7.body||dojo.body(),_9=_7.documentElement||_8.parentNode,_a=dojo.isIE,_b=dojo.isWebKit;
-if((!(dojo.isMoz||_a||_b||dojo.isOpera)||_5==_8||_5==_9)&&(typeof _5.scrollIntoView!="undefined")){
-_5.scrollIntoView(false);
-return;
-}
-var _c=_7.compatMode=="BackCompat",_d=_c?_8:_9,_e=_b?_8:_d,_f=_d.clientWidth,_10=_d.clientHeight,rtl=!dojo._isBodyLtr(),_11=_6||dojo.position(_5),el=_5.parentNode,_12=function(el){
-return ((_a<=6||(_a&&_c))?false:(dojo.style(el,"position").toLowerCase()=="fixed"));
+
+dojo.window.get = function(doc){
+	// summary:
+	// 		Get window object associated with document doc
+
+	// In some IE versions (at least 6.0), document.parentWindow does not return a
+	// reference to the real window object (maybe a copy), so we must fix it as well
+	// We use IE specific execScript to attach the real window reference to
+	// document._parentWindow for later use
+	if(dojo.isIE && window !== document.parentWindow){
+		/*
+		In IE 6, only the variable "window" can be used to connect events (others
+		may be only copies).
+		*/
+		doc.parentWindow.execScript("document._parentWindow = window;", "Javascript");
+		//to prevent memory leak, unset it after use
+		//another possibility is to add an onUnload handler which seems overkill to me (liucougar)
+		var win = doc._parentWindow;
+		doc._parentWindow = null;
+		return win;	//	Window
+	}
+
+	return doc.parentWindow || doc.defaultView;	//	Window
 };
-if(_12(_5)){
-return;
-}
-while(el){
-if(el==_8){
-el=_e;
-}
-var _13=dojo.position(el),_14=_12(el);
-if(el==_e){
-_13.w=_f;
-_13.h=_10;
-if(_e==_9&&_a&&rtl){
-_13.x+=_e.offsetWidth-_13.w;
-}
-if(_13.x<0||!_a){
-_13.x=0;
-}
-if(_13.y<0||!_a){
-_13.y=0;
-}
-}else{
-var pb=dojo._getPadBorderExtents(el);
-_13.w-=pb.w;
-_13.h-=pb.h;
-_13.x+=pb.l;
-_13.y+=pb.t;
-}
-if(el!=_e){
-var _15=el.clientWidth,_16=_13.w-_15;
-if(_15>0&&_16>0){
-_13.w=_15;
-if(_a&&rtl){
-_13.x+=_16;
-}
-}
-_15=el.clientHeight;
-_16=_13.h-_15;
-if(_15>0&&_16>0){
-_13.h=_15;
-}
-}
-if(_14){
-if(_13.y<0){
-_13.h+=_13.y;
-_13.y=0;
-}
-if(_13.x<0){
-_13.w+=_13.x;
-_13.x=0;
-}
-if(_13.y+_13.h>_10){
-_13.h=_10-_13.y;
-}
-if(_13.x+_13.w>_f){
-_13.w=_f-_13.x;
-}
-}
-var l=_11.x-_13.x,t=_11.y-Math.max(_13.y,0),r=l+_11.w-_13.w,bot=t+_11.h-_13.h;
-if(r*l>0){
-var s=Math[l<0?"max":"min"](l,r);
-_11.x+=el.scrollLeft;
-el.scrollLeft+=(_a>=8&&!_c&&rtl)?-s:s;
-_11.x-=el.scrollLeft;
-}
-if(bot*t>0){
-_11.y+=el.scrollTop;
-el.scrollTop+=Math[t<0?"max":"min"](t,bot);
-_11.y-=el.scrollTop;
-}
-el=(el!=_e)&&!_14&&el.parentNode;
-}
-}
-catch(error){
-console.error("scrollIntoView: "+error);
-_5.scrollIntoView(false);
-}
+
+dojo.window.scrollIntoView = function(/*DomNode*/ node, /*Object?*/ pos){
+	// summary:
+	//		Scroll the passed node into view, if it is not already.
+	
+	// don't rely on node.scrollIntoView working just because the function is there
+
+	try{ // catch unexpected/unrecreatable errors (#7808) since we can recover using a semi-acceptable native method
+		node = dojo.byId(node);
+		var doc = node.ownerDocument || dojo.doc,
+			body = doc.body || dojo.body(),
+			html = doc.documentElement || body.parentNode,
+			isIE = dojo.isIE, isWK = dojo.isWebKit;
+		// if an untested browser, then use the native method
+		if((!(dojo.isMoz || isIE || isWK || dojo.isOpera) || node == body || node == html) && (typeof node.scrollIntoView != "undefined")){
+			node.scrollIntoView(false); // short-circuit to native if possible
+			return;
+		}
+		var backCompat = doc.compatMode == 'BackCompat',
+			clientAreaRoot = backCompat? body : html,
+			scrollRoot = isWK ? body : clientAreaRoot,
+			rootWidth = clientAreaRoot.clientWidth,
+			rootHeight = clientAreaRoot.clientHeight,
+			rtl = !dojo._isBodyLtr(),
+			nodePos = pos || dojo.position(node),
+			el = node.parentNode,
+			isFixed = function(el){
+				return ((isIE <= 6 || (isIE && backCompat))? false : (dojo.style(el, 'position').toLowerCase() == "fixed"));
+			};
+		if(isFixed(node)){ return; } // nothing to do
+
+		while(el){
+			if(el == body){ el = scrollRoot; }
+			var elPos = dojo.position(el),
+				fixedPos = isFixed(el);
+	
+			if(el == scrollRoot){
+				elPos.w = rootWidth; elPos.h = rootHeight;
+				if(scrollRoot == html && isIE && rtl){ elPos.x += scrollRoot.offsetWidth-elPos.w; } // IE workaround where scrollbar causes negative x
+				if(elPos.x < 0 || !isIE){ elPos.x = 0; } // IE can have values > 0
+				if(elPos.y < 0 || !isIE){ elPos.y = 0; }
+			}else{
+				var pb = dojo._getPadBorderExtents(el);
+				elPos.w -= pb.w; elPos.h -= pb.h; elPos.x += pb.l; elPos.y += pb.t;
+			}
+	
+			if(el != scrollRoot){ // body, html sizes already have the scrollbar removed
+				var clientSize = el.clientWidth,
+					scrollBarSize = elPos.w - clientSize;
+				if(clientSize > 0 && scrollBarSize > 0){
+					elPos.w = clientSize;
+					if(isIE && rtl){ elPos.x += scrollBarSize; }
+				}
+				clientSize = el.clientHeight;
+				scrollBarSize = elPos.h - clientSize;
+				if(clientSize > 0 && scrollBarSize > 0){
+					elPos.h = clientSize;
+				}
+			}
+			if(fixedPos){ // bounded by viewport, not parents
+				if(elPos.y < 0){
+					elPos.h += elPos.y; elPos.y = 0;
+				}
+				if(elPos.x < 0){
+					elPos.w += elPos.x; elPos.x = 0;
+				}
+				if(elPos.y + elPos.h > rootHeight){
+					elPos.h = rootHeight - elPos.y;
+				}
+				if(elPos.x + elPos.w > rootWidth){
+					elPos.w = rootWidth - elPos.x;
+				}
+			}
+			// calculate overflow in all 4 directions
+			var l = nodePos.x - elPos.x, // beyond left: < 0
+				t = nodePos.y - Math.max(elPos.y, 0), // beyond top: < 0
+				r = l + nodePos.w - elPos.w, // beyond right: > 0
+				bot = t + nodePos.h - elPos.h; // beyond bottom: > 0
+			if(r * l > 0){
+				var s = Math[l < 0? "max" : "min"](l, r);
+				nodePos.x += el.scrollLeft;
+				el.scrollLeft += (isIE >= 8 && !backCompat && rtl)? -s : s;
+				nodePos.x -= el.scrollLeft;
+			}
+			if(bot * t > 0){
+				nodePos.y += el.scrollTop;
+				el.scrollTop += Math[t < 0? "max" : "min"](t, bot);
+				nodePos.y -= el.scrollTop;
+			}
+			el = (el != scrollRoot) && !fixedPos && el.parentNode;
+		}	
+	}catch(error){
+		console.error('scrollIntoView: ' + error);
+		node.scrollIntoView(false);
+	}
 };
+
 }