/*\
title: $:/plugins/tiddlywiki/text-slicer/modules/slicers/image.js
type: application/javascript
module-type: slicer

Handle slicing img nodes

\*/
(function(){

/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";

exports.processImageNode = function(domNode,tagName) {
	if(domNode.nodeType === 1 && tagName === "img") {
		var src = domNode.getAttribute("src");
		if(src && src.substr(0,5) === "data:") {
			var parts = src.toString().substr(5).split(";base64,"),
				type = parts[0],
				text = parts[1],
				contentTypeInfo = $tw.config.contentTypeInfo[type],
				containerTitle = this.getTopContainer(),
				containerTiddler = this.tiddlers[containerTitle],
				title = this.makeUniqueTitle("image",containerTitle) + contentTypeInfo.extension,
				tiddler = {
					title: title,
					type: parts[0],
					text: parts[1],
					"toc-type": "image"
				};
			switch(containerTiddler["toc-type"]) {
				case "document":
					// Make the image be the next child of the document
					this.addToList(containerTitle,title);
					break;
				case "heading":
					// Make the image be the older sibling of the heading
					var parentTitle = this.parentStack[this.parentStack.length - 2].title;
					this.insertBeforeListItem(parentTitle,title,containerTitle);
					break;
				case "paragraph":
					// Make the image be the older sibling of the paragraph
					var parentTitle = this.parentStack[this.parentStack.length - 1].title;
					this.insertBeforeListItem(parentTitle,title,containerTitle);
					break;
				case "item":
					// Create a new older sibling item to contain the image
					var parentTitle = this.parentStack[this.parentStack.length - 1].title,
						itemTitle = this.makeUniqueTitle("image-item-wrapper",containerTitle),
						itemTiddler = {
							title: itemTitle,
							"toc-type": "item",
							list: [title],
							text: "[img[" + title + "]]"
						};
					this.addTiddler(itemTiddler);
					this.insertBeforeListItem(parentTitle,itemTitle,containerTitle);
					break;
			}
			this.addTiddler(tiddler);
			// this.appendToCurrentContainer("[img[" + title + "]]");
		}
		return true;
	} 
	return false;
};

})();