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<pre class="sourcecodebox">/*
Controller.m
Copyright (c) 1995-2005 by Apple Computer, Inc., all rights reserved.
Author: Ali Ozer
TextEdit milestones:
Initially created 1/28/95
Multiple page support 2/16/95
Preferences panel 10/24/95
HTML 7/3/97
Exported services 8/1/97
Java version created 8/11/97
Undo 9/17/97
Scripting 6/18/98
Aquafication 11/1/99
Encoding customization 5/20/02
TODO: Use URLs, switch to NSDocument
Central controller object for TextEdit.
*/
/*
IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in
consideration of your agreement to the following terms, and your use, installation,
modification or redistribution of this Apple software constitutes acceptance of these
terms. If you do not agree with these terms, please do not use, install, modify or
redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject to these
terms, Apple grants you a personal, non-exclusive license, under Apple's copyrights in
this original Apple software (the "Apple Software"), to use, reproduce, modify and
redistribute the Apple Software, with or without modifications, in source and/or binary
forms; provided that if you redistribute the Apple Software in its entirety and without
modifications, you must retain this notice and the following text and disclaimers in all
such redistributions of the Apple Software. Neither the name, trademarks, service marks
or logos of Apple Computer, Inc. may be used to endorse or promote products derived from
the Apple Software without specific prior written permission from Apple. Except as expressly
stated in this notice, no other rights or licenses, express or implied, are granted by Apple
herein, including but not limited to any patent rights that may be infringed by your
derivative works or by other works in which the Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS
USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND
WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR
OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import <Cocoa/Cocoa.h>
#import "Controller.h"
#import "Document.h"
#import "Preferences.h"
static NSString *fullPathOfAppForType(NSString *type); // Return app to open docs of a given extension
@implementation Controller
- (void)applicationDidFinishLaunching:(NSNotification *)notification {
// To get service requests to go to the controller...
[NSApp setServicesProvider:self];
}
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)app {
NSArray *windows = [app windows];
unsigned count = [windows count];
unsigned needsSaving = 0;
// Determine if there are any unsaved documents...
while (count--) {
NSWindow *window = [windows objectAtIndex:count];
Document *document = [Document documentForWindow:window];
if (document && [document isDocumentEdited]) needsSaving++;
}
if (needsSaving > 0) {
int choice = NSAlertDefaultReturn; // Meaning, review changes
if (needsSaving > 1) { // If we only have 1 unsaved document, we skip the "review changes?" panel
NSString *title = [NSString stringWithFormat:NSLocalizedString(@"You have %d documents with unsaved changes. Do you want to review these changes before quitting?", @"Title of alert panel which comes up when user chooses Quit and there are multiple unsaved documents."), needsSaving];
choice = NSRunAlertPanel(title,
NSLocalizedString(@"If you don\\U2019t review your documents, all your changes will be lost.", @"Warning in the alert panel which comes up when user chooses Quit and there are unsaved documents."),
NSLocalizedString(@"Review Changes\\U2026", @"Choice (on a button) given to user which allows him/her to review all unsaved documents if he/she quits the application without saving them all first."), // ellipses
NSLocalizedString(@"Discard Changes", @"Choice (on a button) given to user which allows him/her to quit the application even though there are unsaved documents."),
NSLocalizedString(@"Cancel", @"Button choice allowing user to cancel."));
if (choice == NSAlertOtherReturn) return NSTerminateCancel; /* Cancel */
}
if (choice == NSAlertDefaultReturn) { /* Review unsaved; Quit Anyway falls through */
[Document reviewChangesAndQuitEnumeration:YES];
return NSTerminateLater;
}
}
return NSTerminateNow;
}
- (void)applicationWillTerminate:(NSNotification *)notification {
[Preferences saveDefaults];
}
- (BOOL)openFiles:(NSArray *)filenames {
BOOL someSuccess = YES;
NSMutableArray *openFailures = nil;
Document *previousDocument = nil; // We open multiply docs open front-to-back, for performance reasons
int cnt = 0, numFilenames = [filenames count];
while (cnt < numFilenames) { // Loop over all filenames
NSAutoreleasePool *pool = [NSAutoreleasePool new]; // Because there might be many filenames, use a local pool to limit high water mark
BOOL success;
NSError *error = nil;
NSString *path = [filenames objectAtIndex:cnt];
// Now for a unfortunate hack to see if we're being force-fed screen grabs from 9, which have SimpleText's app signature... If the file has type PICT and creator ttxt, we should open it in an image viewer. Note that this diversion is an issue only for TextEdit, which duplicates SimpleText's app signature.
NSDictionary *attributes = [[NSFileManager defaultManager] fileAttributesAtPath:path traverseLink:YES];
if (attributes && ([attributes fileHFSTypeCode] == 'PICT') && ([attributes fileHFSCreatorCode] == 'ttxt')) {
NSString *app = fullPathOfAppForType(@"pict");
// If we get back ourselves (TextEdit) or nothing, hardwire to use Preview
if (!app || [app isEqual:[[NSBundle mainBundle] bundlePath]]) app = [[NSWorkspace sharedWorkspace] absolutePathForAppBundleWithIdentifier:@"com.apple.Preview"];
success = app && [[NSWorkspace sharedWorkspace] openFile:path withApplication:app];
} else {
Document *document = [Document openDocumentWithPath:path encoding:[[Preferences objectForKey:PlainTextEncodingForRead] intValue] behind:previousDocument error:&error];
success = document ? YES : NO;
if (success) previousDocument = document;
}
if (!success) {
if (!error) error = [NSError errorWithDomain:NSCocoaErrorDomain code:NSFileReadUnknownError userInfo:[NSDictionary dictionaryWithObject:path forKey:NSFilePathErrorKey]]; // If no error came back for some reason, create a generic one
if (!openFailures) openFailures = [[NSMutableArray alloc] init];
[openFailures addObject:error];
}
cnt++;
[pool release];
}
if (openFailures) {
someSuccess = [openFailures count] < [filenames count];
[Document displayOpenFailures:openFailures someSucceeded:someSuccess];
[openFailures release];
}
return someSuccess;
}
/* Note, if your application needs to run on pre-Tiger systems, you should also implement application:openFile:
*/
- (void)application:(NSApplication *)sender openFiles:(NSArray *)filenames {
BOOL success = [self openFiles:filenames];
[NSApp replyToOpenOrPrint:success ? NSApplicationDelegateReplySuccess : NSApplicationDelegateReplyFailure];
}
- (BOOL)applicationOpenUntitledFile:(NSApplication *)sender {
return [Document openUntitled:YES] ? YES : NO;
}
- (void)application:(NSApplication *)sender printFiles:(NSArray *)filenames {
BOOL printingCancelled = NO;
int cnt = 0, numFilenames = [filenames count];
while ((cnt < numFilenames) && !printingCancelled) {
BOOL releaseDoc = NO;
NSString *path = [filenames objectAtIndex:cnt];
Document *document = [Document documentForPath:path];
if (!document) {
document = [[Document alloc] initWithPath:path encoding:[[Preferences objectForKey:PlainTextEncodingForRead] intValue] uniqueZone:NO error:NULL];
releaseDoc = YES; // Indicating this document should be closed after printing
}
if (document) {
printingCancelled = ![document printDocumentModally:YES];
if (releaseDoc) [document release]; // If we created it, we get rid of it.
}
cnt++;
}
[NSApp replyToOpenOrPrint:printingCancelled ? NSApplicationDelegateReplyCancel : NSApplicationDelegateReplySuccess];
}
- (void)createNew:(id)sender {
(void)[Document openUntitled:NO];
}
- (void)open:(id)sender {
[Document open:sender];
}
- (void)saveAll:(id)sender {
[Document saveAllEnumeration:YES];
}
/*** Properties panel support ***/
- (void)togglePropertiesPanel:(id)sender {
if (!propertiesPanel) {
if (![NSBundle loadNibNamed:@"DocumentProperties" owner:self]) {
NSLog(@"Failed to load DocumentProperties.nib");
return;
}
}
if ([propertiesPanel isVisible]) {
[propertiesPanel orderOut:sender];
} else {
[propertiesPanel makeKeyAndOrderFront:sender];
}
}
/* validateMenuItem: is used to dynamically set attributes of menu items.
*/
- (BOOL)validateMenuItem:(NSMenuItem *)menuItem {
if ([menuItem action] == @selector(togglePropertiesPanel:)) { // Correctly toggle the menu item for showing/hiding document properties
validateToggleItem(menuItem, [propertiesPanel isVisible], NSLocalizedString(@"Hide Properties", @"Title for menu item to hide the document properties panel."), NSLocalizedString(@"Show Properties", @"Title for menu item to show the document properties panel (should be the same as the initial menu item in the nib)."));
}
return YES;
}
/*** Services support ***/
- (void)openFile:(NSPasteboard *)pboard userData:(NSString *)data error:(NSString **)error {
NSArray *types = [pboard types];
NSString *filename, *origFilename;
if ([types containsObject:NSStringPboardType] && (filename = origFilename = [pboard stringForType:NSStringPboardType])) {
BOOL success = NO;
if ([filename isAbsolutePath]) { // If seems to be a valid absolute path, first try using it as-is
success = [Document openDocumentWithPath:filename encoding:[[Preferences objectForKey:PlainTextEncodingForRead] intValue] behind:nil error:NULL] ? YES : NO;
}
if (!success) { // Check to see if the user mistakenly included a carriage return or more at the end of the file name...
filename = [[filename substringWithRange:[filename lineRangeForRange:NSMakeRange(0, 0)]] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
if ([filename hasPrefix:@"~"]) filename = [filename stringByExpandingTildeInPath]; /* Convert the "~username" case */
if (![origFilename isEqual:filename] && [filename isAbsolutePath]) success = [Document openDocumentWithPath:filename encoding:[[Preferences objectForKey:PlainTextEncodingForRead] intValue] behind:nil error:NULL] ? YES : NO;
}
// Given that this is a one-way service (no return), we need to put up the error panel ourselves and we do not set *error.
if (!success) {
if ([filename length] > PATH_MAX + 10) filename = [[filename substringToIndex:PATH_MAX] stringByAppendingString:@"... "];
(void)NSRunAlertPanel(NSLocalizedString(@"Open File Failed", @"Title of alert indicating error during Open File service"),
NSLocalizedString(@"Couldn\\U2019t open file \\U201c%@\\U201d.", @"Message indicating file couldn't be opened; %@ is the filename."),
NSLocalizedString(@"OK", @"OK"), nil, nil, filename);
}
}
}
- (void)openSelection:(NSPasteboard *)pboard userData:(NSString *)data error:(NSString **)error {
BOOL success = NO;
Document *document = [Document openUntitled:NO];
NSArray *types = [pboard types];
NSString *preferredType = [[document firstTextView] preferredPasteboardTypeFromArray:types restrictedToTypesFromArray:nil];
if (preferredType) {
[document setRichText:![preferredType isEqualToString:NSStringPboardType]]; /* Special case to open a plain text document */
success = [[document firstTextView] readSelectionFromPasteboard:pboard type:preferredType];
[document setDocumentName:nil];
}
if (!success) {
(void)NSRunAlertPanel(NSLocalizedString(@"Open Selection Failed", @"Title of alert indicating error during Open Selection service"),
NSLocalizedString(@"Couldn\\U2019t open selection.", @"Message indicating selection couldn't be opened during Open Selection service"),
NSLocalizedString(@"OK", @"OK"), nil, nil);
// No need to report an error string...
}
}
@end
@implementation Controller (ScriptingSupport)
// Scripting support.
- (NSArray *)orderedDocuments {
NSArray *orderedWindows = [NSApp valueForKey:@"orderedWindows"];
unsigned i, c = [orderedWindows count];
NSMutableArray *orderedDocs = [NSMutableArray array];
id curDelegate;
for (i=0; i<c; i++) {
curDelegate = [[orderedWindows objectAtIndex:i] delegate];
if ((curDelegate != nil) && [curDelegate isKindOfClass:[Document class]]) {
[orderedDocs addObject:curDelegate];
}
}
return orderedDocs;
}
- (BOOL)application:(NSApplication *)sender delegateHandlesKey:(NSString *)key {
return [key isEqualToString:@"orderedDocuments"];
}
- (void)insertInOrderedDocuments:(Document *)doc atIndex:(int)index {
[doc retain]; // Keep it around...
[[doc firstTextView] setSelectedRange:NSMakeRange(0, 0)];
[doc setDocumentName:nil];
[doc setDocumentEdited:NO];
[[doc window] makeKeyAndOrderFront:nil];
}
/* Support "make" without the "at" parameter
*/
- (void)insertInOrderedDocuments:(Document *)doc {
[self insertInOrderedDocuments:doc atIndex:0];
}
@end
/* A little function to find the app to open docs of a given extension. Unfortunately there isn't direct NSWorkspace API for this, so we have to create a file and see who would open it. Ugh.
*/
static NSString *fullPathOfAppForType(NSString *type) {
NSString *appName = nil;
NSString *tmpFileName = [NSTemporaryDirectory() stringByAppendingPathComponent:[[[NSProcessInfo processInfo] globallyUniqueString] stringByAppendingString:[@"_TextEdit" stringByAppendingPathExtension:type]]];
if ([[NSFileManager defaultManager] createFileAtPath:tmpFileName contents:[NSData data] attributes:nil]) {
(void)[[NSWorkspace sharedWorkspace] getInfoForFile:tmpFileName application:&appName type:NULL];
(void)[[NSFileManager defaultManager] removeFileAtPath:tmpFileName handler:nil];
}
return appName;
}
</pre>
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