added MPCollectionView to track index for context menu

MacPass/Base.lproj/IconSelection.xib

@@ -23,7 +23,7 @@
                         <rect key="frame" x="0.0" y="0.0" width="380" height="270"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <collectionView focusRingType="none" selectable="YES" id="58">
+                            <collectionView focusRingType="none" selectable="YES" id="58" customClass="MPCollectionView">
                                 <rect key="frame" x="0.0" y="0.0" width="380" height="270"/>
                                 <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                                 <color key="primaryBackgroundColor" name="windowBackgroundColor" catalog="System" colorSpace="catalog"/>

MacPass/MPActionHelper.h

@@ -46,8 +46,7 @@ typedef NS_ENUM(NSUInteger, MPActionType) {
   MPActionShowEntryHistory, // show history
   MPActionHideEntryHistory, // exit history
   MPActionPerformAutotypeForSelectedEntry, // Perform Autotype for selected Entry
-  MPActionRemoveAttachment, // Remove an attachment
-  MPActionDeleteCustomIcon // delte a custom icon
+  MPActionRemoveAttachment // Remove an attachment
 };
 /**
  *	Helper to retrieve commonly used actions

MacPass/MPCollectionView.h

@@ -0,0 +1,15 @@
+//
+//  MPCollectionView.h
+//  MacPass
+//
+//  Created by Michael Starke on 18.09.17.
+//  Copyright © 2017 HicknHack Software GmbH. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+@interface MPCollectionView : NSCollectionView
+
+@property NSUInteger contextMenuIndex; // the index the context menu was last opened. NSNotFound if invalid
+
+@end

MacPass/MPCollectionView.m

@@ -0,0 +1,44 @@
+//
+//  MPCollectionView.m
+//  MacPass
+//
+//  Created by Michael Starke on 18.09.17.
+//  Copyright © 2017 HicknHack Software GmbH. All rights reserved.
+//
+
+#import "MPCollectionView.h"
+
+@implementation MPCollectionView
+
+- (instancetype)initWithCoder:(NSCoder *)coder {
+  self = [super initWithCoder:coder];
+  if(self) {
+    _contextMenuIndex = NSNotFound;
+  }
+  return self;
+}
+
+- (instancetype)initWithFrame:(NSRect)frameRect {
+  self = [super initWithFrame:frameRect];
+  if(self) {
+    _contextMenuIndex = NSNotFound;
+  }
+  return self;
+}
+
+- (NSMenu *)menuForEvent:(NSEvent *)event {
+  self.contextMenuIndex = NSNotFound;
+  NSPoint point = [self convertPoint:event.locationInWindow fromView:nil];
+  NSUInteger count = self.content.count;
+  for (NSUInteger i = 0; i < count; i++) {
+    NSRect itemFrame = [self frameForItemAtIndex:i];
+    if (NSMouseInRect(point, itemFrame, self.isFlipped)) {
+      self.contextMenuIndex = i;
+      break;
+    }
+  }
+  
+  return [super menuForEvent:event];
+}
+
+@end

MacPass/MPIconSelectViewController.m

@@ -23,12 +23,13 @@
 #import "MPIconSelectViewController.h"
 #import "MPIconHelper.h"
 #import "MPDocument.h"
+#import "MPCollectionView.h"
 #import "MPCollectionViewItem.h"
 
 @interface MPIconSelectViewController () <NSCollectionViewDelegate>
 
 /* UI properties */
-@property (weak) IBOutlet NSCollectionView *iconCollectionView;
+@property (weak) IBOutlet MPCollectionView *iconCollectionView;
 @property (weak) IBOutlet NSButton *imageButton;
 
 @end
@@ -46,6 +47,10 @@
   self.iconCollectionView.delegate = self;
   [self.iconCollectionView registerForDraggedTypes:@[(NSString *)kUTTypeURL, (NSString *)kUTTypeFileURL]];
   
+  NSMenu *menu = [[NSMenu alloc] initWithTitle:@""];
+  [menu addItem:[[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"DELETE", @"") action:@selector(deleteIcon:) keyEquivalent:@""]];
+  self.iconCollectionView.menu = menu;
+  
   [self _updateCollectionViewContent];
 }
 
@@ -95,7 +100,15 @@
 }
 
 - (void)deleteIcon:(id)sender {
-  
+  NSUInteger index = self.iconCollectionView.contextMenuIndex;
+  NSUInteger firstCustomIndex = [MPIconHelper databaseIcons].count;
+  if(index < firstCustomIndex) {
+    return;
+  }
+  MPDocument *document = [NSDocumentController sharedDocumentController].currentDocument;
+  KPKIcon *icon = self.iconCollectionView.content[index];
+  [document.tree.metaData removeCustomIcon:icon];
+  [self _updateCollectionViewContent];
 }