#
#  MSUOptionalInstallsViewController.py
#  Managed Software Update
#
#  Created by Greg Neagle on 7/8/10.
#  Copyright 2010 Greg Neagle.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#      http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from objc import YES, NO, IBAction, IBOutlet
from Foundation import *
from AppKit import *

class MSUOptionalInstallsViewController(NSViewController):
    '''
    Controls the optional software view of the main window
    '''

    descriptionView = IBOutlet()
    tableView = IBOutlet()
    theWindow = IBOutlet()
    array_controller = IBOutlet()
    window_controller = IBOutlet()
    AddRemoveBtn = IBOutlet()

    _optionallist = NSArray.arrayWithArray_([{"installed": NO, "managed": NO, "original_managed": NO,
                                              "name": "", "version": "", 
                                              "description": "", "size": "", "enabled": NO, 
                                              "status": "", "original_status": ""}])
    
    def optionallist(self):
        return self._optionallist
    objc.accessor(optionallist) # PyObjC KVO hack
    
    def setOptionallist_(self, newlist):
        self._optionallist = NSArray.arrayWithArray_(newlist)
    objc.accessor(setOptionallist_) # PyObjC KVO hack
    
    @IBAction
    def itemCheckBoxClicked_(self, sender):
        self.updateRowStatus()
        #self.updateAddRemoveBtnState()
        
    def updateRowStatus(self):
        if len(self.array_controller.selectedObjects()):
            row = self.array_controller.selectedObjects()[0]
            if row['managed'] == row['original_managed']:
                # restore original status
                row['status'] = row['original_status']
                self.updateAddRemoveBtnState()
            else:
                # we've inverted the management state
                self.AddRemoveBtn.setEnabled_(YES)
                if row['managed']:
                    # user checked this one
                    if row['original_status'] == "Not installed":
                        row['status'] = "Will be installed"
                    elif row['original_status'] == "Update available":
                        row['status'] = "Will be updated"
                    elif row['original_status'] == "Will be removed":
                        row['status'] = "Will not be removed"
                else:
                    # not row['managed']
                    if row['original_status'] == "Installed":
                        row['status'] = "Will be removed"
                    elif row['original_status'] == "Will be installed":
                        row['status'] = "Will not be installed"

                        
    def updateAddRemoveBtnState(self):
        userChanges = NO
        for row in self.array_controller.arrangedObjects():
            if row['managed'] != row['original_managed']:
                userChanges = YES
                break                      
        self.AddRemoveBtn.setEnabled_(userChanges)
    
    @IBAction
    def cancelBtnClicked_(self, sender):
        self.window_controller.theTabView.selectPreviousTabViewItem_(sender)
        if NSApp.delegate()._listofupdates == []:
            NSApp.delegate().noUpdatesAlert()
        
    @IBAction
    def AddRemoveBtnClicked_(self, sender):
        # process Adds and/or Removes
        self.window_controller.theTabView.selectPreviousTabViewItem_(sender)
        NSApp.delegate().addOrRemoveOptionalSoftware()
        
    def updateDescriptionView(self):
        if len(self.array_controller.selectedObjects()):
            row = self.array_controller.selectedObjects()[0]
            description = row.get("description","")
            if "</html>" in description or "</HTML>" in description:
                self.descriptionView.mainFrame().loadHTMLString_baseURL_(description, None)
            else:
                self.descriptionView.mainFrame().loadData_MIMEType_textEncodingName_baseURL_(
                                                  buffer(description),
                                                  u"text/plain", u"utf-8", None)
            self.updateRowStatus()
        else:
            self.descriptionView.mainFrame().loadHTMLString_baseURL_(u"", None)
            
    def tableViewSelectionDidChange_(self, sender):
        self.performSelectorOnMainThread_withObject_waitUntilDone_(self.updateDescriptionView, None, NO)