tool.js

c#中用MapXtreme开发的地理信息系统

function Tool (id, interaction, command)
{
	if (arguments.length > 0) {
		this.Init(id, interaction, command);
	}
}

Tool.prototype.Activate = function() 
{
}

Tool.prototype.Deactivate = function()
{
}

Tool.prototype.Init = function(id, interaction, command)
{
	this.id = id;
	this.interaction = interaction;
	this.active = false;
	this.command = command;
	if (this.interaction.onComplete == null) this.interaction.onComplete = this.OnInteractionComplete;
}

Tool.prototype.OnInteractionComplete = function()
{
	this.command.Execute();
}

function ImgTool(id,  interaction, command)
{
	if (arguments.length > 0) {
		this.Init(id, interaction, command);
	}
}
ImgTool.prototype = new Tool();
ImgTool.prototype.constructor = ImgTool;
ImgTool.superclass = Tool.prototype;
ImgTool.prototype.Init = function(id, interaction, command)
{
	ImgTool.superclass.Init.call(this, id, interaction, command);
	this.imgId = this.id + "_Image";
	this.imgElement = document.getElementById(this.imgId);
	this.imgElement.onclick = this.eventHandler("Toggle");
}

ImgTool.prototype.Toggle = function()
{
	if (this.active) {
		this.Deactivate();
	} else {
		this.Activate();
	}
}

ImgTool.prototype.Activate = function()
{
	if (this.interaction.element == null) this.interaction.element = FindElement(this.interaction.elementID);
	if (this.interaction.element != null && this.interaction.element.currentTool) {
		try {
			this.interaction.element.currentTool.Deactivate();
		} catch(e){;}
	}
	this.interaction.InitHandlers();
	this.imgElement.src = this.activeImg;
	this.interaction.element.style.cursor = this.cursorImg;
	this.interaction.element.currentTool = this;
	this.active = true;
	var activeTool = document.getElementById(this.id+"Active");
	if (activeTool) activeTool.value = this.id + "," + this.interaction.element.id;
}

ImgTool.prototype.Deactivate = function()
{
	this.imgElement.src = this.inactiveImg;
	this.active = false;
	this.interaction.element.style.cursor = null;
	this.interaction.DeinitHandlers();
	var activeTool = document.getElementById(this.id+"Active");
	if (activeTool) activeTool.value = "";
}

function AppendScriptToForm(script)
{
	var scr = document.getElementById('ActivationScript');
	if (!scr) scr = document.createElement('script');
	scr.id = 'ActivationScript';
	scr.type = 'text/javascript';
	scr.text = script;
	document.forms[0].appendChild(scr);
}