# -*- coding: UTF-8 -*-

from common import *
from editorui.editorcommon import *
from editorui.editormain import *
import os


class KPLayerList(QtGui.QWidget):
	def __init__(self):
		QtGui.QWidget.__init__(self)

		self.layout = QtGui.QVBoxLayout()
		self.layout.setSpacing(0)

		self.model = KP.map.layerModel

		self.listView = QtGui.QListView()
		self.listView.setModel(self.model)
		self.listView.selectionModel().currentRowChanged.connect(self.handleRowChanged)
		self.layout.addWidget(self.listView)

		self.toolbar = QtGui.QToolBar()
		self.layout.addWidget(self.toolbar)

		self.setupToolbar(self.toolbar)
		self.setButtonStates()

		self.setLayout(self.layout)


	def setupToolbar(self, tb):
		self.actAddTile = tb.addAction(KP.icon('LayerNewTile'), 'Add Tile Layer', self.addTileLayer)
		self.actAddDoodad = tb.addAction(KP.icon('LayerNewObjects'), 'Add Doodad Layer', self.addDoodadLayer)
		self.actRemove = tb.addAction(KP.icon('LayerRemove'), 'Remove', self.removeLayer)
		self.actMoveUp = tb.addAction(QtGui.QIcon(), 'Move Up', self.moveUp)
		self.actMoveDown = tb.addAction(QtGui.QIcon(), 'Move Down', self.moveDown)
	

	def setButtonStates(self):
		index = self.selectedLayerIndex()

		self.actRemove.setEnabled((index != -1) and (len(KP.map.layers) > 1))
		self.actMoveUp.setEnabled(index > 0)
		self.actMoveDown.setEnabled((index != -1) and (index < (len(KP.map.layers) - 1)))


	def selectedLayerIndex(self):
		return self.listView.selectionModel().currentIndex().row()
	def selectedLayer(self):
		return KP.map.layers[self.listView.selectionModel().currentIndex().row()]

	selectedLayerChanged = QtCore.pyqtSignal(KPLayer)

	@QtCore.pyqtSlot(QtCore.QModelIndex, QtCore.QModelIndex)
	def handleRowChanged(self, current, previous):
		self.selectedLayerChanged.emit(KP.map.layers[current.row()])
		self.setButtonStates()


	def addTileLayer(self):
		from dialogs import KPTilesetChooserDialog

		tilesetName = KPTilesetChooserDialog.run('Choose a tileset for the new layer')
		if tilesetName is None:
			return

		layer = KP.map.createNewTileLayer(tilesetName)

		KP.map.appendLayer(layer)
		self.setButtonStates()


	def addDoodadLayer(self):
		layer = KP.map.createNewDoodadLayer()

		KP.map.appendLayer(layer)
		self.setButtonStates()


	def removeLayer(self):
		layer = self.selectedLayer()
		scene = KP.mainWindow.scene

		for obj in layer.objects:
			item = obj.qtItem
			if item:
				scene.removeItem(item)

		KP.map.removeLayer(self.selectedLayer())
		self.setButtonStates()

	def moveUp(self):
		index = self.selectedLayerIndex()
		KP.map.moveLayer(index, index - 1)
		KP.mainWindow.editor.viewport().update()

	def moveDown(self):
		index = self.selectedLayerIndex()
		KP.map.moveLayer(index, index + 2)
		KP.mainWindow.editor.viewport().update()




class KPDoodadSelector(QtGui.QWidget):
	objChanged = QtCore.pyqtSignal(int, QtGui.QListWidgetItem)


	def __init__(self):
		"""Initialises the widget."""

		QtGui.QWidget.__init__(self)

		self.layout = QtGui.QVBoxLayout()
		self.layout.setSpacing(0)

		self.doodadList = QtGui.QListWidget()
		self.doodadList.setViewMode(1)
		self.doodadList.setWrapping(True)
		self.doodadList.setDragDropMode(1)
		self.doodadList.setSelectionMode(1)
		self.doodadList.setResizeMode(1)
		self.doodadList.setGridSize(QtCore.QSize(128, 128))
		self.doodadList.setIconSize(QtCore.QSize(100, 100))
		self.doodadList.setSpacing(4)

	
		self.toolbar = QtGui.QToolBar()
		self.layout.addWidget(self.toolbar)

		self.addDoodadButton = self.toolbar.addAction(QtGui.QIcon(), 'Add', self.addDoodadfromFile)
		self.removeDoodadButton = self.toolbar.addAction(QtGui.QIcon(), 'Remove', self.removeDoodad)


		self.layout.addWidget(self.doodadList)

		self.setLayout(self.layout)

		self.nextIndex = 0

		self.doodadList.currentItemChanged.connect(self.handleRowChanged)



	def keyPressEvent(self, event):

		self.doodadList.keyPressEvent(event)

		if event.key() == QtCore.Qt.Key_Delete or event.key() == QtCore.Qt.Key_Backspace:

			msgBox = QtGui.QMessageBox(QtGui.QMessageBox.Warning,
					"Delete Doodad?", "Are you sure you want to delete this doodad? This action cannot be undone.",
					QtGui.QMessageBox.NoButton, self)
			msgBox.addButton("Delete", QtGui.QMessageBox.AcceptRole)
			msgBox.addButton("Cancel", QtGui.QMessageBox.RejectRole)
			if msgBox.exec_() == QtGui.QMessageBox.AcceptRole:
				self.removeDoodad()


	def addDoodad(self, image, name):
		"""Takes a name and a QPixmap and turns it into an icon, then goes ahead and makes a doodad.
		Doodads are QListWidget items with an index number as Qt.UserRole #32."""


		doodie = QtGui.QListWidgetItem(QtGui.QIcon(image), name)
		doodie.setSizeHint(QtCore.QSize(128,128))
		doodie.setData(32, self.nextIndex)
		doodie.setToolTip(name)
		doodie.setTextAlignment(Qt.AlignBottom | Qt.AlignHCenter)

		self.doodadList.addItem(doodie)
		self.nextIndex += 1


	def addDoodadfromFile(self):
		"""Asks the user for files to load in as doodads."""
		
		log = QtGui.QFileDialog()
		log.setFileMode(3);

		files = QtGui.QFileDialog.getOpenFileNames(self,
				"Choose an image or several image files.", "",
				"Images (*.png *.jpeg *.jpg *.bmp)")
		if files:
			for image in files:
				name = os.path.basename(unicode(image)).split('.')[0]

				pix = QtGui.QPixmap()
				pix.load(image)

				self.addDoodad(pix, name)


	def removeDoodad(self):
		"""Removes selected doodad"""

		item = self.doodadList.currentRow()

		if item != -1:
			self.doodadList.takeItem(item)


	def getDoodad(self, index):
		"""Retrieves a doodad by index"""
		index = QtCore.QVariant(index)
		widget = self.doodadList

		for i in xrange(widget.count()):
			item = widget.item(i)
			if item.data(32) == index:
				return item


	def getDoodadImage(self, index, width, height):
		"""Retrieves a doodad pixmap by index"""
		index = QtCore.QVariant(index)
		widget = self.doodadList

		for i in xrange(widget.count()):
			item = widget.item(i)
			if item.data(32) == index:
				return item.icon().pixmap(width, height)

	def getDoodads(self):
		"""Returns a list of all doodads. 

		Name can be retrieved with doodad.text()
		Image with doodad.icon().pixmap(doodad.icon().availableSizes()[0])
		Index with doodad.data(32)"""

		# TODO: FIX THIS
		return self.doodadList.items()


	@QtCore.pyqtSlot(QtGui.QListWidgetItem)
	def handleRowChanged(self, current):
		"""Throws a signal emitting the current object when changed"""
		self.objChanged.emit(current.data(32).toPyObject(), current)




class KPObjectSelector(QtGui.QWidget):
	def __init__(self):
		"""Initialises the widget. Remember to call setModel() on it with a KPGroupModel
		whenever the layer changes."""

		QtGui.QWidget.__init__(self)

		self.menuSetup = False

		self.sorterButton = QtGui.QToolButton()

		self.sorterButton.setText('Pick a Layer')
		self.sorterButton.setEnabled(False)
		self.sorterButton.setPopupMode(self.sorterButton.InstantPopup)
		self.sorterButton.setToolButtonStyle(Qt.ToolButtonTextOnly)
		self.sorterButton.setSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)

		self.sorterMenu = QtGui.QMenu()
		self.sorterButton.setMenu(self.sorterMenu)


		self.layout = QtGui.QVBoxLayout()
		self.layout.setSpacing(0)

		self.toolbar = QtGui.QToolBar()
		self.toolbar.setFixedHeight(28)
		self.toolbar.addWidget(self.sorterButton)
		self.layout.addWidget(self.toolbar)

		self.listView = QtGui.QListView()
		self.listView.setFlow(QtGui.QListView.LeftToRight)
		self.listView.setLayoutMode(QtGui.QListView.SinglePass)
		self.listView.setMovement(QtGui.QListView.Static)
		self.listView.setResizeMode(QtGui.QListView.Adjust)
		self.listView.setWrapping(True)
		self.listView.setEnabled(False)
		self.layout.addWidget(self.listView)

		self.setLayout(self.layout)

		self.model = None


		# Borrowed the signals and junk from Reggie, figure we'll need em'
		# Some more signals are set in setModel
		self.listView.clicked.connect(self.handleObjReplace)
		self.sorterMenu.aboutToShow.connect(self.fixUpMenuSize)
		self.sorterMenu.triggered.connect(self.toggleTopLevel)
	

	def beginUsingMenu(self):
		if self.menuSetup: return

		font = QtGui.QFont()
		font.setPixelSize(18)
		font.setBold(True)
		self.sorterButton.setFont(font)
		self.sorterButton.setEnabled(True)
		self.menuSetup = True


	def fixUpMenuSize(self):
		self.sorterMenu.setFixedWidth(self.sorterButton.width())
	

	def currentSelectedObject(self):
		"""Returns the currently selected object reference, for painting purposes."""

		index = self.listView.currentIndex().row()
		object = self.model.groupItem().getItem(index)

		return object


	def setModel(self, model):
		"""Sets the model and the menu sorting list"""

		if model == self.model:
			return

		self.model = model
		self.listView.setModel(model)
		self.listView.setEnabled(True)

		model.view = self.listView

		menuList = model.groupItem().getGroupList()

		self.beginUsingMenu()
		string = QtCore.QString(QtCore.QChar(0x25BE))
		string.append(' All Groups')

		self.sorterButton.setText(string)
		self.sorterMenu.clear()

		for item in menuList:
			actionMan = self.sorterMenu.addAction(item[0])

			actionMan.setData((item[1], item[2]))

		# a Quick Fix
		self.listView.setRowHidden(0, True)

		# set up signals
		self.listView.selectionModel().currentRowChanged.connect(self.handleRowChanged)


	def toggleTopLevel(self, action):
		"""Changes the top level group in the list view."""

		name = str(action.text()).strip()
		startRow = action.data().toPyObject()[0] + 1
		endRow = action.data().toPyObject()[1]

		for row in xrange(self.model.rowCount()):
			if (row < startRow) or (row > endRow):
				self.listView.setRowHidden(row, True)
			else:
				self.listView.setRowHidden(row, False)

		string = QtCore.QString(QtCore.QChar(0x25BE))
		string.append(' ' + name)

		self.sorterButton.setText(string)


	@QtCore.pyqtSlot(QtCore.QModelIndex, QtCore.QModelIndex)
	def handleRowChanged(self, current, previous):
		"""Throws a signal emitting the current object when changed"""
		i = current.row()
		object, depth = self.model.groupItem().getItem(i)

		self.objChanged.emit(i, object)


	def handleObjReplace(self, index):
		"""Throws a signal when the selected object is used as a replacement"""
		if QtGui.QApplication.keyboardModifiers() == QtCore.Qt.AltModifier:
			i = current.row()
			object, depth = self.model.groupItem().getItem(i)

			self.objReplaced.emit(i, object)

	objChanged = QtCore.pyqtSignal(int, KPTileObject)
	objReplaced = QtCore.pyqtSignal(int, KPTileObject)



class KPMainWindow(QtGui.QMainWindow):
	def __init__(self):
		QtGui.QMainWindow.__init__(self)

		self.scene = KPMapScene()

		self.editor = KPEditorWidget(self.scene)
		self.setCentralWidget(self.editor)

		self.setupMenuBar()

		self.setupDocks()


	def setupMenuBar(self):
		mb = self.menuBar()

		m = mb.addMenu('&File')
		# ...


	def setupDocks(self):
		self.layerList = KPLayerList()
		self.layerListDock = QtGui.QDockWidget('Layers')
		self.layerListDock.setWidget(self.layerList)

		self.layerList.selectedLayerChanged.connect(self.handleSelectedLayerChanged)

		self.objectSelector = KPObjectSelector()
		self.objectSelector.objChanged.connect(self.handleSelectedObjectChanged)

		self.objectSelectorDock = QtGui.QDockWidget('Objects')
		self.objectSelectorDock.setWidget(self.objectSelector)

		self.doodadSelector = KPDoodadSelector()
		self.doodadSelector.objChanged.connect(self.handleSelectedDoodadChanged)

		self.doodadSelectorDock = QtGui.QDockWidget('Doodads')
		self.doodadSelectorDock.setWidget(self.doodadSelector)
		self.doodadSelectorDock.hide()

		self.addDockWidget(Qt.RightDockWidgetArea, self.layerListDock)
		self.addDockWidget(Qt.RightDockWidgetArea, self.objectSelectorDock)
		self.addDockWidget(Qt.RightDockWidgetArea, self.doodadSelectorDock)
	

	@QtCore.pyqtSlot(KPLayer)
	def handleSelectedLayerChanged(self, layer):
		self.scene.setCurrentLayer(layer)

		if isinstance(layer, KPDoodadLayer):
			self.objectSelectorDock.hide()
			self.doodadSelectorDock.show()

		elif isinstance(layer, KPTileLayer):
			self.doodadSelectorDock.hide()
			self.objectSelectorDock.show()

			self.objectSelector.setModel(KP.map.loadedTilesets[layer.tileset].getModel())
	

	@QtCore.pyqtSlot(int, KPTileObject)
	def handleSelectedObjectChanged(self, index, obj):
		self.editor.paintNext = obj
		self.editor.paintNextID = index


	@QtCore.pyqtSlot(int, QtGui.QListWidgetItem)
	def handleSelectedDoodadChanged(self, index, obj):
		self.editor.paintNext = obj
		self.editor.paintNextID = index