define([
	"dojo/_base/declare", // declare
	"dojo/i18n", // i18n.getLocalization
	"dojo/_base/lang", // lang.hitch
	"dojo/sniff", // has("chrome") has("opera")
	"../../focus", // focus.focus()
	"../_Plugin",
	"../../form/Button",
	"dojo/i18n!../nls/commands"
], function(declare, i18n, lang, has, focus, _Plugin, Button){

	// module:
	//		dijit/_editor/plugins/Print

	var Print = declare("dijit._editor.plugins.Print", _Plugin, {
		// summary:
		//		This plugin provides Print capability to the editor.  When
		//		clicked, the document in the editor frame will be printed.

		_initButton: function(){
			// summary:
			//		Over-ride for creation of the Print button.
			var strings = i18n.getLocalization("dijit._editor", "commands"),
				editor = this.editor;
			this.button = new Button({
				label: strings["print"],
				ownerDocument: editor.ownerDocument,
				dir: editor.dir,
				lang: editor.lang,
				showLabel: false,
				iconClass: this.iconClassPrefix + " " + this.iconClassPrefix + "Print",
				tabIndex: "-1",
				onClick: lang.hitch(this, "_print")
			});
		},

		setEditor: function(/*dijit/Editor*/ editor){
			// summary:
			//		Tell the plugin which Editor it is associated with.
			// editor: Object
			//		The editor object to attach the print capability to.
			this.editor = editor;
			this._initButton();

			// Set up a check that we have a print function
			// and disable button if we do not.
			this.editor.onLoadDeferred.then(
				lang.hitch(this, function(){
					if(!this.editor.iframe.contentWindow["print"]){
						this.button.set("disabled", true);
					}
				})
			);
		},

		updateState: function(){
			// summary:
			//		Over-ride for button state control for disabled to work.
			var disabled = this.get("disabled");
			if(!this.editor.iframe.contentWindow["print"]){
				disabled = true;
			}
			this.button.set("disabled", disabled);
		},

		_print: function(){
			// summary:
			//		Function to trigger printing of the editor document
			// tags:
			//		private
			var edFrame = this.editor.iframe;
			if(edFrame.contentWindow["print"]){
				// IE requires the frame to be focused for
				// print to work, but since this is okay for all
				// no special casing.
				if(!has("opera") && !has("chrome")){
					focus.focus(edFrame);
					edFrame.contentWindow.print();
				}else{
					// Neither Opera nor Chrome 3 et you print single frames.
					// So, open a new 'window', print it, and close it.
					// Also, can't use size 0x0, have to use 1x1
					var edDoc = this.editor.document;
					var content = this.editor.get("value");
					content = "<html><head><meta http-equiv='Content-Type' " +
						"content='text/html; charset='UTF-8'></head><body>" +
						content + "</body></html>";
					var win = window.open("javascript: ''",
						"",
						"status=0,menubar=0,location=0,toolbar=0," +
							"width=1,height=1,resizable=0,scrollbars=0");
					win.document.open();
					win.document.write(content);
					win.document.close();

					var styleNodes = edDoc.getElementsByTagName("style");
					if(styleNodes){
						// Clone over any editor view styles, since we can't print the iframe
						// directly.
						var i;
						for(i = 0; i < styleNodes.length; i++){
							var style = styleNodes[i].innerHTML;
							var sNode = win.document.createElement("style");
							sNode.appendChild(win.document.createTextNode(style));
							win.document.getElementsByTagName("head")[0].appendChild(sNode);
						}
					}
					win.print();
					win.close();
				}
			}
		}
	});

	// Register this plugin.
	_Plugin.registry["print"] = function(){
		return new Print({command: "print"});
	};

	return Print;
});
