require("UIWidget");
require("CCRectNode");
local NodeEditor = class("NodeEditor" , require("Editor"));

function NodeEditor:ctor()
	self.SelectedNodes = {}
	-- 节点计数器
	self.NodeCount = 1
	self.SelectedIndex = 1;
end

function NodeEditor:activate()
	-- 恢复场景的位置
	app.mainScene:setPosition(cc.p(0,0));
	-- 恢复下场景的缩放
	app.setting.ScreenScale = 1;
	app.mainScene:setScale(app.setting.ScreenScale);
end

function NodeEditor:unactivate()
	self:closeNode();
end

function NodeEditor:play()
	if self.node then
		self.node:playCurveAnimation();
		if self.node.stop then
			self.node:stop();
		end
		if self.node.play then
			self.node:play();
		end
	end
end

-- 是否可以选中此节点
function NodeEditor:canSelectNode(flag, node)
	-- 忽略空节点
	if not flag and table.valueOfItem({"Layout", "GridLine" , "Scaler" , "Node" , "Scene"} , node.ClassName) then
		return false;
	end
	
	return true;
end

function NodeEditor:stop()
	if self.node then
		self.node:stopCurveAnimation();
		if self.node.stop then
			self.node:stop();
		end
	end
end

-- 各个派生类可以重写这个函数
function NodeEditor:save(filename)
	NodeEditor.super.save(self, filename);
	--self.node:save(filename);
	self.node:saveToFile(filename);

	-- 清空undoredoManager
	app.undoRedoManager:clear();
end

-- 关闭光效
function NodeEditor:closeNode()
	if self.node then
		self.node:removeFromParent();
		self.node = nil;
	end
	self:clearSelect();
end

-- 初始化光效，添加到场景中
function NodeEditor:initNode(node)
	self.node = node
	app.mainLayer:addChild(self.node)
end

function NodeEditor:createNode(nodeType)
	local node = cc[nodeType]:createNode()
	-- 设置节点的名字
	node:setName(nodeType)
	if type(node.setDefaults) == "function" then
		node:setDefaults();
	end
	self:autoSetNodeName(node);
	return node;
end

-- 从文件载入节点
function NodeEditor:loadNode(nodeFile)
	self:closeNode();
	--self.node = createNodeFromFile(nodeFile);
	self.node = tolua.cast(cc.StreamObject:loadFromFile(nodeFile) , "cc.Node3D");
	self:initNode(self.node);
	return self.node;	
end

-- 清除所有选择
function NodeEditor:clearSelect()
	
	for i , v in pairs(self.SelectedNodes) do
		v.selectedNode:removeFromParent();
		v.selectedNode = nil;
	end
	
	self.SelectedNodes = {};
end

--[[-- 通过命令清除所有选择
function NodeEditor:commandClearSelect()
	if table.nums(self.SelectedNodes) <= 0 then
		return;
	end
	
	-- 通过command来清空选择
	local command = Commands:unselect(self.SelectedNodes);	
	app.undoRedoManager:doCommand(command);	
end--]]

-- 取消选择一个节点
function NodeEditor:unSelectNode(node)
	if not self.SelectedNodes[node] then
		return
	end
	
	-- 去掉选择框
	local curNode = self.SelectedNodes[node];
	curNode.selectedNode:removeFromParent();
	curNode.selectedNode = nil;
	
	-- 从列表中去掉
	self.SelectedNodes[node] = nil;
end

-- 通过命令取消选择一个节点
--[[function NodeEditor:commandUnselectNode(node)
	local nodes = {};
	table.insert(nodes, node);
	local command = Commands:unselect(nodes);
	app.undoRedoManager:doCommand(command);	
end--]]

-- 选择一个节点
function NodeEditor:selectNode(node)
	if self.SelectedNodes[node] then
		return;
	end
	self.SelectedNodes[node] = node;
	-- 保存计数值，记录选中的顺序
	node.SelectedIndex = self.SelectedIndex;
	self.SelectedIndex = self.SelectedIndex + 1;

	local rectNode = cc.RectNode:create(node);
	node.selectedNode = rectNode;
	app.mainLayer:addChild(rectNode);
end

-- 通过命令选择一个节点
--[[function NodeEditor:commandSelectNode(node)
	local nodes = {};
	table.insert(nodes, node);
	local command = Commands:select(nodes);
	app.undoRedoManager:doCommand(command);	
end--]]

-- 删除选中的节点
function NodeEditor:deleteNode(node)
	-- 不在选中队列里不能删除
	if not self.SelectedNodes[node] then
		return;
	end
	
	-- 去掉选择框
	local curNode = self.SelectedNodes[node];
	curNode.selectedNode:removeFromParent();
	curNode.selectedNode = nil;
	
	-- 从列表中去掉
	self.SelectedNodes[node] = nil;
	node:removeFromParent();
end

-- 通过命令删除一个节点
function NodeEditor:commandDeleteNode(node)
	local command = Commands:deleteNode(node);
	app.undoRedoManager:doCommand(command);
end

-- 删除所有选中的节点
function NodeEditor:commandDeleteSelectNodes()
	if next(self.SelectedNodes) == nil then
		return;
	end
	
	-- 如果子节点和父节点都在删除的范围里面则只删除父节点就可以了
	local deleteNodes = {};
	for i, v in pairs(self.SelectedNodes) do
		if not ParentNodeIsInTable(v, self.SelectedNodes) then
			table.insert(deleteNodes, v);
		end
	end
	
	local commands = {};
	for i, v in pairs(deleteNodes) do
		local command = Commands:deleteNode(v);
		table.insert(commands, command);
	end
	
	-- 清空所有选中
	self:clearSelect();
	app.undoRedoManager:doCommand(Commands:batchCommand(commands));
end

-- 改变节点的父子关系
function NodeEditor:commandModityNode(node, newParent)
	local command = Commands:modifyNode(node, newParent);
	app.undoRedoManager:doCommand(command);
end

-- 复制节点到另一个节点下面
function NodeEditor:commandCopyNode(node, parentNode)
	local command = Commands:addNode(node, parentNode);
	app.undoRedoManager:doCommand(command);
end

-- 复制一个节点的动画到另一个节点下面
function NodeEditor:commandCopyNodeAnim(node, parentNode)
	local command = Commands:copyNodeAnim(node, parentNode);
	app.undoRedoManager:doCommand(command);
end

function NodeEditor:sceneToMouse(x , y)
	return app.mainLayer:convertToWorldSpace(cc.p(x,y));
end

function NodeEditor:mouseToScene(x , y)
	return app.mainLayer:convertToNodeSpace(cc.p(x,y));
end

-- 摆放一个节点到场景中
-- @nodeType 节点类型名字
-- @parentNode 父节点
-- @posWithMouse 鼠标的窗口位置
function NodeEditor:placeNode(nodeType , parentNode , posWithMouse)
	local node = self:createNode(nodeType);
	local pNode = nil;
	if parentNode then
		pNode = parentNode;
	else
		pNode = self.node;
	end
	
	-- 设置世界坐标
	if posWithMouse then
		local worldPos = app.cameraController:convertScreenToWorldPos(posWithMouse.x , posWithMouse.y);
		local nodePos = pNode:convertToNodeSpace(worldPos);
		node:setTranslation(nodePos);
	end
	
	-- 通过命令添加到节点树里面
	local command = Commands:addNode(node, pNode);
	app.undoRedoManager:doCommand(command);

	return node;
end

return NodeEditor;