Fix the File/Tree view's vertical split view

It will now remember it's position and the divider will not move when the window resizes.

Author: brotherbard

GLFileView.h

@@ -21,6 +21,7 @@
 	NSMutableArray *groups;
 	NSString *logFormat;
 	IBOutlet NSView *accessoryView;
+	IBOutlet NSSplitView *fileListSplitView;
 }
 
 - (void)showFile;

GLFileView.m

@@ -16,6 +16,14 @@
 #define ITEM_IDENTIFIER			@"Identifier"		// string
 #define ITEM_NAME				@"Name"				// string
 
+
+@interface GLFileView ()
+
+- (void)saveSplitViewPosition;
+
+@end
+
+
 @implementation GLFileView
 
 - (void) awakeFromNib
@@ -52,6 +60,9 @@ - (void) awakeFromNib
 							items, GROUP_ITEMS, 
 							nil]];
 	[typeBar reloadData];
+
+	[fileListSplitView setHidden:YES];
+	[self performSelector:@selector(restoreSplitViewPositiion) withObject:nil afterDelay:0];
 }
 
 - (void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
@@ -154,6 +165,7 @@ - (void) didLoad
 - (void)closeView
 {
 	[historyController.treeController removeObserver:self forKeyPath:@"selection"];
+	[self saveSplitViewPosition];
 
 	[super closeView];
 }
@@ -241,6 +253,71 @@ - (NSString *) parseBlame:(NSString *)txt
 	return (NSString *)res;
 }
 
+
+
+#pragma mark NSSplitView delegate methods
+
+#define kFileListSplitViewLeftMin 120
+#define kFileListSplitViewRightMin 180
+#define kHFileListSplitViewPositionDefault @"File List SplitView Position"
+
+- (CGFloat)splitView:(NSSplitView *)splitView constrainMinCoordinate:(CGFloat)proposedMin ofSubviewAt:(NSInteger)dividerIndex
+{
+	return kFileListSplitViewLeftMin;
+}
+
+- (CGFloat)splitView:(NSSplitView *)splitView constrainMaxCoordinate:(CGFloat)proposedMax ofSubviewAt:(NSInteger)dividerIndex
+{
+	return [splitView frame].size.width - [splitView dividerThickness] - kFileListSplitViewRightMin;
+}
+
+// while the user resizes the window keep the left (file list) view constant and just resize the right view
+// unless the right view gets too small
+- (void)splitView:(NSSplitView *)splitView resizeSubviewsWithOldSize:(NSSize)oldSize
+{
+	NSRect newFrame = [splitView frame];
+
+	float dividerThickness = [splitView dividerThickness];
+
+	NSView *leftView = [[splitView subviews] objectAtIndex:0];
+	NSRect leftFrame = [leftView frame];
+	leftFrame.size.height = newFrame.size.height;
+
+	if ((newFrame.size.width - leftFrame.size.width - dividerThickness) < kFileListSplitViewRightMin) {
+		leftFrame.size.width = newFrame.size.width - kFileListSplitViewRightMin - dividerThickness;
+	}
+
+	NSView *rightView = [[splitView subviews] objectAtIndex:1];
+	NSRect rightFrame = [rightView frame];
+	rightFrame.origin.x = leftFrame.size.width + dividerThickness;
+	rightFrame.size.width = newFrame.size.width - rightFrame.origin.x;
+	rightFrame.size.height = newFrame.size.height;
+
+	[leftView setFrame:leftFrame];
+	[rightView setFrame:rightFrame];
+}
+
+// NSSplitView does not save and restore the position of the SplitView correctly so do it manually
+- (void)saveSplitViewPosition
+{
+	float position = [[[fileListSplitView subviews] objectAtIndex:0] frame].size.width;
+	[[NSUserDefaults standardUserDefaults] setFloat:position forKey:kHFileListSplitViewPositionDefault];
+	[[NSUserDefaults standardUserDefaults] synchronize];
+}
+
+// make sure this happens after awakeFromNib
+- (void)restoreSplitViewPositiion
+{
+	float position = [[NSUserDefaults standardUserDefaults] floatForKey:kHFileListSplitViewPositionDefault];
+	if (position < 1.0)
+		position = 200;
+
+	[fileListSplitView setPosition:position ofDividerAtIndex:0];
+	[fileListSplitView setHidden:NO];
+}
+
+
+
 @synthesize groups;
 @synthesize logFormat;
 

PBGitHistoryView.xib

@@ -21,7 +21,7 @@
 		</object>
 		<object class="NSMutableArray" key="IBDocument.EditedObjectIDs">
 			<bool key="EncodedWithXMLCoder">YES</bool>
-			<integer value="486"/>
+			<integer value="475"/>
 		</object>
 		<object class="NSArray" key="IBDocument.PluginDependencies">
 			<bool key="EncodedWithXMLCoder">YES</bool>
@@ -1074,7 +1074,7 @@
 																</object>
 																<object class="NSCustomView" id="891500945">
 																	<reference key="NSNextResponder" ref="626906425"/>
-																	<int key="NSvFlags">268</int>
+																	<int key="NSvFlags">274</int>
 																	<object class="NSMutableArray" key="NSSubviews">
 																		<bool key="EncodedWithXMLCoder">YES</bool>
 																		<object class="NSCustomView" id="375746871">
@@ -1084,7 +1084,7 @@
 																				<bool key="EncodedWithXMLCoder">YES</bool>
 																				<object class="NSCustomView" id="951933530">
 																					<reference key="NSNextResponder" ref="375746871"/>
-																					<int key="NSvFlags">268</int>
+																					<int key="NSvFlags">265</int>
 																					<object class="NSMutableArray" key="NSSubviews">
 																						<bool key="EncodedWithXMLCoder">YES</bool>
 																						<object class="NSButton" id="16222431">
@@ -1984,6 +1984,22 @@
 					</object>
 					<int key="connectionID">488</int>
 				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBOutletConnection" key="connection">
+						<string key="label">fileListSplitView</string>
+						<reference key="source" ref="932676109"/>
+						<reference key="destination" ref="626906425"/>
+					</object>
+					<int key="connectionID">489</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBOutletConnection" key="connection">
+						<string key="label">delegate</string>
+						<reference key="source" ref="626906425"/>
+						<reference key="destination" ref="932676109"/>
+					</object>
+					<int key="connectionID">490</int>
+				</object>
 			</object>
 			<object class="IBMutableOrderedSet" key="objectRecords">
 				<object class="NSArray" key="orderedObjects">
@@ -2894,7 +2910,7 @@
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<string>com.apple.WebKitIBPlugin</string>
-					<string>{{1559, 241}, {955, 434}}</string>
+					<string>{{1084, 241}, {955, 434}}</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
@@ -2932,7 +2948,7 @@
 				</object>
 			</object>
 			<nil key="sourceID"/>
-			<int key="maxID">488</int>
+			<int key="maxID">490</int>
 		</object>
 		<object class="IBClassDescriber" key="IBDocument.Classes">
 			<object class="NSMutableArray" key="referencedPartialClassDescriptions">
@@ -2945,12 +2961,14 @@
 						<object class="NSArray" key="dict.sortedKeys">
 							<bool key="EncodedWithXMLCoder">YES</bool>
 							<string>accessoryView</string>
+							<string>fileListSplitView</string>
 							<string>historyController</string>
 							<string>typeBar</string>
 						</object>
 						<object class="NSMutableArray" key="dict.values">
 							<bool key="EncodedWithXMLCoder">YES</bool>
 							<string>NSView</string>
+							<string>NSSplitView</string>
 							<string>PBGitHistoryController</string>
 							<string>MGScopeBar</string>
 						</object>
@@ -2960,6 +2978,7 @@
 						<object class="NSArray" key="dict.sortedKeys">
 							<bool key="EncodedWithXMLCoder">YES</bool>
 							<string>accessoryView</string>
+							<string>fileListSplitView</string>
 							<string>historyController</string>
 							<string>typeBar</string>
 						</object>
@@ -2969,6 +2988,10 @@
 								<string key="name">accessoryView</string>
 								<string key="candidateClassName">NSView</string>
 							</object>
+							<object class="IBToOneOutletInfo">
+								<string key="name">fileListSplitView</string>
+								<string key="candidateClassName">NSSplitView</string>
+							</object>
 							<object class="IBToOneOutletInfo">
 								<string key="name">historyController</string>
 								<string key="candidateClassName">PBGitHistoryController</string>