"""
qSearch
QGIS plugin

Denis Rouzaud
denis.rouzaud@gmail.com
Feb. 2012
"""
# Import the PyQt and QGIS libraries
import PyQt4
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from qgis.gui import *

import resources

from chooselayer import chooseLayer
from editsearch import editSearch
from settings import settings

try:
    _fromUtf8 = QString.fromUtf8
except AttributeError:
    _fromUtf8 = lambda s: s

class qSearch(QObject):
	def __init__(self, iface):
		QObject.__init__(self)
		self.iface = iface
		# init dialogs
		self.chooseLayerDialog = chooseLayer(self.iface)
		self.editSearchDialog  = editSearch(self.iface)
		# load searches when new layers are loaded or when a search is saved
		QObject.connect(self.iface.mapCanvas() , SIGNAL("layersChanged ()") , self.fillMenuEntries ) 
		QObject.connect(self.editSearchDialog  , SIGNAL("searchSaved ()")   , self.fillMenuEntries ) 
		self.menuEntries = []

	def initGui(self):
		self.newSearchAction = QAction(QIcon(":/plugins/qsearch/icons/search.png"),u"Новый поиск", self.iface.mainWindow())
		QObject.connect(self.newSearchAction, SIGNAL("triggered()"), self.newSearch)
		self.iface.addToolBarIcon(self.newSearchAction)
		self.iface.addPluginToMenu("&qSearch", self.newSearchAction)	
		# settings
		self.uisettings = settings(self.iface)
		self.uisettingsAction = QAction(QIcon(":/plugins/qsearch/icons/settings.png"),u"Установки", self.iface.mainWindow())
		QObject.connect(self.uisettingsAction, SIGNAL("triggered()"), self.uisettings.exec_)
		self.iface.addPluginToMenu("&qSearch", self.uisettingsAction)	
		# help
		self.helpAction = QAction(QIcon(":/plugins/qsearch/icons/help.png"), "Help", self.iface.mainWindow())
		QObject.connect(self.helpAction, SIGNAL("triggered()"), lambda: QDesktopServices.openUrl(QUrl("https://github.com/3nids/qsearch/wiki")))
		self.iface.addPluginToMenu("&qSearch", self.helpAction)

	def unload(self):
		# Remove the plugin menu item and icon
		self.iface.removePluginMenu("&qSearch",self.newSearchAction)
		self.iface.removePluginMenu("&qSearch", self.uisettingsAction)	
		self.iface.removePluginMenu("&qSearch", self.helpAction)	
		for menu in self.menuEntries:
			self.iface.removePluginMenu("&qSearch", menu)

	def newSearch(self):
		if self.chooseLayerDialog.exec_():
			layer = self.chooseLayerDialog.selectedLayer()
			if layer is not False:
				self.editSearchDialog.initUi(layer)
				self.editSearchDialog.show()

	def fillMenuEntries(self):
		for menu in self.menuEntries:
			self.iface.removePluginMenu("&qSearch", menu)
		self.menuEntries = []
		for layer in self.iface.legendInterface().layers():
			searches = layer.customProperty("qSearch","").toString()
			if searches != "":
				exec("searches = %s" % searches)
				for i,search in enumerate(searches):
					action = searchAction("%s :: %s" % (layer.name(),search.get('name')), self.iface.mainWindow() , layer, i)
					QObject.connect(action, SIGNAL("triggered()"), self.showSearch)	
					self.iface.addPluginToMenu("&qSearch",action)
					self.menuEntries.append( action )

	def showSearch(self):
		search = self.sender()
		self.editSearchDialog.initUi(search.layer)
		self.editSearchDialog.loadSearch(search.isearch)
		self.editSearchDialog.show()


class searchAction(QAction):
	def __init__(self,str,win,layer,isearch):
		QAction.__init__(self,str,win)
		self.layer = layer
		self.isearch = isearch