MacGui: add drag & drop to rearrange languages in the subtitles default panel.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6258 b64f7644-9d1e-0410-96f1-a4d463321fa5

4 files changed, 174 insertions, 6 deletions

diff --git a/macosx/English.lproj/SubtitlesDefaults.xib b/macosx/English.lproj/SubtitlesDefaults.xib
index b5505887d..11c528809 100644
--- a/macosx/English.lproj/SubtitlesDefaults.xib
+++ b/macosx/English.lproj/SubtitlesDefaults.xib
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="5056" systemVersion="14A299l" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none">
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="5056" systemVersion="13F7" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none">
     <dependencies>
         <deployment version="1060" defaultVersion="1090" identifier="macosx"/>
         <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="5056"/>
@@ -138,6 +138,8 @@
                                     </tableColumns>
                                     <connections>
                                         <binding destination="ZBe-aP-wvq" name="content" keyPath="arrangedObjects" id="ak7-UG-Fqe"/>
+                                        <outlet property="dataSource" destination="ZBe-aP-wvq" id="bDe-Wj-fNO"/>
+                                        <outlet property="delegate" destination="ZBe-aP-wvq" id="Tgj-bB-hZ2"/>
                                     </connections>
                                 </tableView>
                             </subviews>
@@ -155,7 +157,7 @@
                     <button verticalHuggingPriority="750" id="QAt-5X-NBT">
                         <rect key="frame" x="161" y="93" width="71" height="23"/>
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                        <buttonCell key="cell" type="smallSquare" title="Show All" bezelStyle="smallSquare" imagePosition="overlaps" alignment="center" controlSize="small" state="on" borderStyle="border" inset="3" id="PiQ-bA-7P1">
+                        <buttonCell key="cell" type="smallSquare" title="Show All" bezelStyle="smallSquare" imagePosition="overlaps" alignment="center" controlSize="small" borderStyle="border" inset="3" id="PiQ-bA-7P1">
                             <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES" changeBackground="YES" changeGray="YES"/>
                             <font key="font" metaFont="smallSystem"/>
                         </buttonCell>
@@ -187,6 +189,7 @@ DQ
             </declaredKeys>
             <connections>
                 <binding destination="-2" name="contentArray" keyPath="languagesList.languagesArray" id="vKV-y3-Zbg"/>
+                <outlet property="tableView" destination="Of7-71-Ci6" id="QIg-ml-iKO"/>
             </connections>
         </arrayController>
     </objects>
diff --git a/macosx/HBLanguagesSelection.h b/macosx/HBLanguagesSelection.h
index 725fdf9d9..cb017555b 100644
--- a/macosx/HBLanguagesSelection.h
+++ b/macosx/HBLanguagesSelection.h
@@ -47,4 +47,11 @@
  */
 @property (nonatomic, readwrite) BOOL showSelectedOnly;
 
+/**
+ *  Set whether the user can drag the table view's elements.
+ */
+@property (nonatomic, readwrite) BOOL isDragginEnabled;
+
+@property (assign) IBOutlet NSTableView *tableView;
+
 @end
diff --git a/macosx/HBLanguagesSelection.m b/macosx/HBLanguagesSelection.m
index 0ffe3e52a..c57df8bbe 100644
--- a/macosx/HBLanguagesSelection.m
+++ b/macosx/HBLanguagesSelection.m
@@ -36,8 +36,8 @@
     if (self)
     {
         NSMutableArray *internal = [[NSMutableArray alloc] init];
+        NSMutableArray *selected = [[NSMutableArray alloc] init];
 
-        int insertedItems = 0;
         const iso639_lang_t *lang = lang_get_next(NULL);
         for (lang = lang_get_next(lang); lang != NULL; lang = lang_get_next(lang))
         {
@@ -48,7 +48,7 @@
             if ([languages containsObject:item.iso639_2])
             {
                 item.isSelected = YES;
-                [internal insertObject:item atIndex:insertedItems++];
+                [selected addObject:item];
             }
             else
             {
@@ -65,6 +65,16 @@
         }
         [internal insertObject:item atIndex:0];
 
+        // Insert the selected items
+        // in the original order.
+        [selected sortUsingComparator:^NSComparisonResult(id obj1, id obj2) {
+            return [languages indexOfObject:[obj1 iso639_2]] - [languages indexOfObject:[obj2 iso639_2]];
+        }];
+
+        [internal insertObjects:selected
+                      atIndexes:[NSIndexSet indexSetWithIndexesInRange:(NSMakeRange(1, selected.count))]];
+        [selected release];
+
         _languagesArray = internal;
     }
 
@@ -122,4 +132,130 @@ NSString *kHBLanguagesDragRowsType = @"kHBLanguagesDragRowsType";
     return [super arrangeObjects:filteredObjects];
 }
 
+- (void) awakeFromNib
+{
+	[self.tableView registerForDraggedTypes:@[kHBLanguagesDragRowsType]];
+	self.isDragginEnabled = YES;
+}
+
+- (BOOL)tableView:(NSTableView *)tableView writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard *)pboard
+{
+    if (self.isDragginEnabled)
+	{
+        NSData *data = nil;
+        if (self.showSelectedOnly)
+        {
+            // If the show selected only filter
+            // is enabled, we need to modify the rowIndexes
+            // to match the position of the elements in the unfiltered array
+            NSArray *filteredArray = [[self arrangedObjects] copy];
+            self.showSelectedOnly = NO;
+            NSArray *unfilteredArray = [self arrangedObjects];
+
+            NSMutableIndexSet *unfilteredIndexes = [NSMutableIndexSet indexSet];
+            NSUInteger currentIndex = [rowIndexes firstIndex];
+            while (currentIndex != NSNotFound)
+            {
+                NSUInteger newIndex = [unfilteredArray indexOfObject:[filteredArray objectAtIndex:currentIndex]];
+                [unfilteredIndexes addIndex:newIndex];
+                currentIndex = [rowIndexes indexGreaterThanIndex:currentIndex];
+            }
+
+            data = [NSKeyedArchiver archivedDataWithRootObject:unfilteredIndexes];
+            [filteredArray release];
+        }
+        else
+        {
+            data = [NSKeyedArchiver archivedDataWithRootObject:rowIndexes];
+        }
+
+        [pboard declareTypes:[NSArray arrayWithObject:kHBLanguagesDragRowsType] owner:self];
+        [pboard setData:data forType:kHBLanguagesDragRowsType];
+    }
+    
+    return self.isDragginEnabled;
+}
+
+- (NSDragOperation)tableView:(NSTableView *)view
+                validateDrop:(id <NSDraggingInfo>)info
+                 proposedRow:(NSInteger)row
+       proposedDropOperation:(NSTableViewDropOperation)operation
+{
+    NSDragOperation dragOp = NSDragOperationNone;
+
+    // if drag source is our own table view, it's a move or a copy
+    if ([info draggingSource] == view)
+	{
+		// At a minimum, allow move
+		dragOp =  NSDragOperationMove;
+    }
+
+    [view setDropRow:row dropOperation:NSTableViewDropAbove];
+
+    return dragOp;
+}
+
+- (BOOL)tableView:(NSTableView *)view acceptDrop:(id <NSDraggingInfo>)info row:(NSInteger)row dropOperation:(NSTableViewDropOperation)operation
+{
+    if (([info draggingSourceOperationMask] == NSDragOperationCopy))
+    {
+        return nil;
+    }
+
+    if ([info draggingSource] == view)
+    {
+        // Get the index set from the pasteBoard.
+        NSData *rowData = [[info draggingPasteboard] dataForType:kHBLanguagesDragRowsType];
+        NSIndexSet *indexSet = [NSKeyedUnarchiver unarchiveObjectWithData:rowData];
+
+        NSUInteger i = [indexSet countOfIndexesInRange:NSMakeRange(0, row)];
+
+        // Rearrage the objects.
+        [self moveObjectsInArrangedObjectsFromIndexes:indexSet toIndex:row];
+
+        // Update the selection.
+        row -= i;
+        NSIndexSet *selectionSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(row, [indexSet count])];
+        [view selectRowIndexes:selectionSet byExtendingSelection:NO];
+
+		return YES;
+    }
+
+    return NO;
+}
+
+- (void)moveObjectsInArrangedObjectsFromIndexes:(NSIndexSet *)indexSet toIndex:(NSUInteger)insertIndex
+{
+    NSArray	*objects = [self arrangedObjects];
+
+    NSInteger aboveInsertIndexCount = 0;
+    NSInteger removeIndex;
+
+    NSUInteger thisIndex = [indexSet lastIndex];
+    while (thisIndex != NSNotFound)
+	{
+		if (thisIndex >= insertIndex)
+		{
+			removeIndex = thisIndex + aboveInsertIndexCount;
+			aboveInsertIndexCount += 1;
+		}
+		else
+		{
+			removeIndex = thisIndex;
+			insertIndex -= 1;
+		}
+
+		// Get the object we're moving
+		id object = objects[removeIndex];
+
+		// Move the object
+		[object retain];
+		[self removeObjectAtArrangedObjectIndex:removeIndex];
+		[self insertObject:object atArrangedObjectIndex:insertIndex];
+		[object release];
+
+		thisIndex = [indexSet indexLessThanIndex:thisIndex];
+    }
+}
+
 @end
diff --git a/macosx/HBSubtitlesDefaultsController.m b/macosx/HBSubtitlesDefaultsController.m
index f529798d4..ead542080 100644
--- a/macosx/HBSubtitlesDefaultsController.m
+++ b/macosx/HBSubtitlesDefaultsController.m
@@ -8,6 +8,8 @@
 #import "HBSubtitlesSettings.h"
 #import "HBLanguagesSelection.h"
 
+static void *HBSubtitlesDefaultsContex = &HBSubtitlesDefaultsContex;
+
 @interface HBSubtitlesDefaultsController ()
 
 @property (nonatomic, readonly) HBSubtitlesSettings *settings;
@@ -33,10 +35,25 @@
 
 - (void)windowDidLoad
 {
+    [self addObserver:self forKeyPath:@"tableController.showSelectedOnly" options:0 context:HBSubtitlesDefaultsContex];
+
     if (self.settings.trackSelectionLanguages.count)
     {
         self.tableController.showSelectedOnly = YES;
-        [self.showAllButton setState:NSOffState];
+    }
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
+{
+    if (context == HBSubtitlesDefaultsContex) {
+        if ([keyPath isEqualToString:@"tableController.showSelectedOnly"])
+        {
+            [self.showAllButton setState:!self.tableController.showSelectedOnly];
+        }
+    }
+    else
+    {
+        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
     }
 }
 
@@ -61,8 +78,13 @@
 
 - (void)dealloc
 {
-    [super dealloc];
     [_settings release];
+
+    @try {
+        [self removeObserver:self forKeyPath:@"tableController.showSelectedOnly"];
+    } @catch (NSException * __unused exception) {}
+
+    [super dealloc];
 }
 
 @end