created tool class which keeps track of cursors, incorporates changeTool; made changelog data its own file

js/_tools.js

@@ -0,0 +1,70 @@
+//tools container / list, automatically managed when you create a new Tool();
+var tool = {};
+
+//class for tools
+class Tool {
+	constructor (name, options) {
+
+		//stores the name in object, only needed for legacy functions from when currentTool was just a string
+		this.name = name;
+
+		//copy options to this object
+		if (options.cursor) {
+			//passed statically as a string
+			if (typeof options.cursor == 'string') this.cursor = options.cursor;
+			//passed a function which should be used as a getter function
+			if (typeof options.cursor == 'function') Object.defineProperty(this, 'cursor', { get: options.cursor});
+		}
+
+		if (options.imageCursor) this.cursor = "url(\'/pixel-editor/"+options.imageCursor+".png\'), auto";
+
+		if (options.brushPreview) {
+			this.brushPreview = true;
+			this.currentBrushSize = 1;
+			this.previousBrushSize = 1;
+		}
+
+		//add to tool object so it can be referenced
+		tool[name] = this;
+	}
+
+	get brushSize () {
+		return this.currentBrushSize;
+	}
+
+	set brushSize (value) {
+		this.currentBrushSize = value;
+		this.updateCursor();
+	}
+
+
+	//switch to this tool (replaced global changeTool())
+	switchTo () {
+
+		console.log('changing tool to',this.name)
+
+		// Ending any selection in progress
+	    if (currentTool.name.includes("select") && !this.name.includes("select") && !selectionCanceled) {
+	    	endSelection();
+	    }
+
+	    //set tool and temp tje tje tpp;
+	    currentTool = this;
+		currentToolTemp = this;
+
+	    var tools = document.getElementById("tools-menu").children;
+
+		for (var i = 0; i < tools.length; i++) {
+		    tools[i].classList.remove("selected");
+		}
+
+	    //give the button of the selected tool the .selected class
+		document.getElementById(this.name+"-button").parentNode.classList.add("selected");
+
+		//change cursor
+		this.updateCursor();
+	}
+}
+
+
+/*global dragging currentTool, currentToolTemp, selectionCanceled, endSelection*/