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//
// PBGitHistoryView.m
// GitX
//
// Created by Pieter de Bie on 19-09-08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//

#import "PBGitHistoryController.h"
#import "CWQuickLook.h"
#import "PBGitGrapher.h"
#import "PBGitRevisionCell.h"
#import "PBCommitList.h"
#define QLPreviewPanel NSClassFromString(@"QLPreviewPanel")


@implementation PBGitHistoryController
@synthesize selectedTab, webCommit, rawCommit, gitTree, commitController;

- (void)awakeFromNib
{
self.selectedTab = [[NSUserDefaults standardUserDefaults] integerForKey:@"Repository Window Selected Tab Index"];;
[commitController addObserver:self forKeyPath:@"selection" options:(NSKeyValueObservingOptionNew,NSKeyValueObservingOptionOld) context:@"commitChange"];
[treeController addObserver:self forKeyPath:@"selection" options:0 context:@"treeChange"];
[repository addObserver:self forKeyPath:@"currentBranch" options:0 context:@"branchChange"];
NSSize cellSpacing = [commitList intercellSpacing];
cellSpacing.height = 0;
[commitList setIntercellSpacing:cellSpacing];
[fileBrowser setTarget:self];
[fileBrowser setDoubleAction:@selector(openSelectedFile:)];

if (!repository.currentBranch) {
[repository reloadRefs];
[repository readCurrentBranch];
}
else
[repository lazyReload];

// Set a sort descriptor for the subject column in the history list, as
// It can't be sorted by default (because it's bound to a PBGitCommit)
[[commitList tableColumnWithIdentifier:@"subject"] setSortDescriptorPrototype:[[NSSortDescriptor alloc] initWithKey:@"subject" ascending:YES]];

[super awakeFromNib];
}

- (void) updateKeys
{
NSArray* selection = [commitController selectedObjects];

// Remove any references in the QLPanel
//[[QLPreviewPanel sharedPreviewPanel] setURLs:[NSArray array] currentIndex:0 preservingDisplayState:YES];
// We have to do this manually, as NSTreeController leaks memory?
//[treeController setSelectionIndexPaths:[NSArray array]];

if ([selection count] > 0)
realCommit = [selection objectAtIndex:0];
else
realCommit = nil;

self.webCommit = nil;
self.rawCommit = nil;
self.gitTree = nil;

switch (self.selectedTab) {
case 0: self.webCommit = realCommit; break;
case 1: self.rawCommit = realCommit; break;
case 2: self.gitTree = realCommit.tree; break;
}
}


- (void) setSelectedTab: (int) number
{
selectedTab = number;
[[NSUserDefaults standardUserDefaults] setInteger:selectedTab forKey:@"Repository Window Selected Tab Index"];
[self updateKeys];
}

- (void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
    if ([(NSString *)context isEqualToString: @"commitChange"]) {
[self updateKeys];
return;
}
else if ([(NSString *)context isEqualToString: @"treeChange"]) {
[self updateQuicklookForce: NO];
}
else if([(NSString *)context isEqualToString:@"branchChange"]) {
// Reset the sorting
commitController.sortDescriptors = [NSArray array];
}
else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}

- (IBAction) openSelectedFile: sender
{
NSArray* selectedFiles = [treeController selectedObjects];
if ([selectedFiles count] == 0)
return;
PBGitTree* tree = [selectedFiles objectAtIndex:0];
NSString* name = [tree tmpFileNameForContents];
[[NSWorkspace sharedWorkspace] openTempFile:name];
}

- (IBAction) setDetailedView: sender {
self.selectedTab = 0;
}
- (IBAction) setRawView: sender {
self.selectedTab = 1;
}
- (IBAction) setTreeView: sender {
self.selectedTab = 2;
}

- (void)keyDown:(NSEvent*)event
{
if ([[event charactersIgnoringModifiers] isEqualToString: @"f"] && [event modifierFlags] & NSAlternateKeyMask && [event modifierFlags] & NSCommandKeyMask)
[superController.window makeFirstResponder: searchField];
else
[super keyDown: event];
}

- (void) copyCommitInfo
{
PBGitCommit *commit = [[commitController selectedObjects] objectAtIndex:0];
if (!commit)
return;
NSString *info = [NSString stringWithFormat:@"%@ (%@)", [[commit realSha] substringToIndex:10], [commit subject]];

NSPasteboard *a =[NSPasteboard generalPasteboard];
[a declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:self];
[a setString:info forType: NSStringPboardType];

}

- (IBAction) toggleQuickView: sender
{
id panel = [QLPreviewPanel sharedPreviewPanel];
if ([panel isOpen]) {
[panel closePanel];
} else {
[[QLPreviewPanel sharedPreviewPanel] makeKeyAndOrderFrontWithEffect:1];
[self updateQuicklookForce: YES];
}
}

- (void) updateQuicklookForce: (BOOL) force
{
if (!force && ![[QLPreviewPanel sharedPreviewPanel] isOpen])
return;

NSArray* selectedFiles = [treeController selectedObjects];

if ([selectedFiles count] == 0)
return;

NSMutableArray* fileNames = [NSMutableArray array];
for (PBGitTree* tree in selectedFiles) {
NSString* s = [tree tmpFileNameForContents];
if (s)
[fileNames addObject:[NSURL fileURLWithPath: s]];
}

[[QLPreviewPanel sharedPreviewPanel] setURLs:fileNames currentIndex:0 preservingDisplayState:YES];

}

- (IBAction) refresh: sender
{
[repository reloadRefs];
[repository.revisionList reload];
}

- (void) updateView
{
[self refresh:nil];
}

- (void) selectCommit: (NSString*) commit
{
NSPredicate* selection = [NSPredicate predicateWithFormat:@"realSha == %@", commit];
NSArray* selectedCommits = [repository.revisionList.commits filteredArrayUsingPredicate:selection];
[commitController setSelectedObjects: selectedCommits];
int index = [[commitController selectionIndexes] firstIndex];
[commitList scrollRowToVisible: index];
}

- (BOOL) hasNonlinearPath
{
return [commitController filterPredicate] || [[commitController sortDescriptors] count] > 0;
}

- (void) removeView
{
[webView close];
[commitController removeObserver:self forKeyPath:@"selection"];
[treeController removeObserver:self forKeyPath:@"selection"];
[repository removeObserver:self forKeyPath:@"currentBranch"];

[super removeView];
}

@end
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