# -*- coding: utf-8 -*-

# Copyright (c) 2014 - 2018 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the largefiles extension project browser helper.
"""

from __future__ import unicode_literals

from PyQt5.QtWidgets import QMenu

from ..HgExtensionProjectBrowserHelper import HgExtensionProjectBrowserHelper

import UI.PixmapCache


class LargefilesProjectBrowserHelper(HgExtensionProjectBrowserHelper):
    """
    Class implementing the largefiles extension project browser helper.
    """
    def __init__(self, vcsObject, browserObject, projectObject):
        """
        Constructor
        
        @param vcsObject reference to the vcs object
        @param browserObject reference to the project browser object
        @param projectObject reference to the project object
        """
        super(LargefilesProjectBrowserHelper, self).__init__(
            vcsObject, browserObject, projectObject)
    
    def initMenus(self):
        """
        Public method to generate the extension menus.
        
        Note: Derived class must implement this method.
        
        @return dictionary of populated menu (dict of QMenu). The dict
            must have the keys 'mainMenu', 'multiMenu', 'backMenu', 'dirMenu'
            and 'dirMultiMenu'.
        """
        self.__menus = {}
        self.__addSingleActs = []
        self.__addMultiActs = []
        
        menu = QMenu(self.menuTitle())
        menu.setTearOffEnabled(True)
        act = menu.addAction(
            UI.PixmapCache.getIcon("vcsAdd.png"),
            self.tr('Add as Large File'),
            lambda: self.__hgAddLargefiles("large"))
        self.__addSingleActs.append(act)
        act = menu.addAction(
            UI.PixmapCache.getIcon("vcsAdd.png"),
            self.tr('Add as Normal File'),
            lambda: self.__hgAddLargefiles("normal"))
        self.__addSingleActs.append(act)
        self.__menus['mainMenu'] = menu
        
        menu = QMenu(self.menuTitle())
        menu.setTearOffEnabled(True)
        act = menu.addAction(
            UI.PixmapCache.getIcon("vcsAdd.png"),
            self.tr('Add as Large Files'),
            lambda: self.__hgAddLargefiles("large"))
        self.__addMultiActs.append(act)
        act = menu.addAction(
            UI.PixmapCache.getIcon("vcsAdd.png"),
            self.tr('Add as Normal Files'),
            lambda: self.__hgAddLargefiles("normal"))
        self.__addMultiActs.append(act)
        self.__menus['multiMenu'] = menu
        
        return self.__menus
    
    def menuTitle(self):
        """
        Public method to get the menu title.
        
        Note: Derived class must implement this method.
        
        @return title of the menu (string)
        """
        return self.tr("Large Files")
    
    def showExtensionMenu(self, key, controlled):
        """
        Public method to prepare the extension menu for display.
        
        @param key menu key (string, one of 'mainMenu', 'multiMenu',
            'backMenu', 'dirMenu' or 'dirMultiMenu')
        @param controlled flag indicating to prepare the menu for a
            version controlled entry or a non-version controlled entry
            (boolean)
        """
        if key == "mainMenu":
            for act in self.__addSingleActs:
                act.setEnabled(not controlled)
        elif key == "multiMenu":
            for act in self.__addMultiActs:
                act.setEnabled(not controlled)
    
    def __hgAddLargefiles(self, mode):
        """
        Private slot to add the selected files as large files.
        
        @param mode add mode (string one of 'normal' or 'large')
        """
        names = []
        for itm in self.browser.getSelectedItems():
            try:
                name = itm.fileName()
            except AttributeError:
                continue
            names.append(name)
        
        if names:
            if len(names) == 1:
                self.vcs.getExtensionObject("largefiles").hgAdd(names[0], mode)
            else:
                self.vcs.getExtensionObject("largefiles").hgAdd(names, mode)
            for fn in names:
                self._updateVCSStatus(fn)
