michael@0: /*
michael@0:  * Copyright (C) 2009 Apple Inc. All Rights Reserved.
michael@0:  *
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions
michael@0:  * are met:
michael@0:  * 1. Redistributions of source code must retain the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer.
michael@0:  * 2. Redistributions in binary form must reproduce the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer in the
michael@0:  *    documentation and/or other materials provided with the distribution.
michael@0:  *
michael@0:  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
michael@0:  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
michael@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
michael@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
michael@0:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
michael@0:  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
michael@0:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
michael@0:  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
michael@0:  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
michael@0:  *
michael@0:  * Modified by Josh Aas of Mozilla Corporation.
michael@0:  */
michael@0: 
michael@0: #import "ComplexTextInputPanel.h"
michael@0: 
michael@0: #include <algorithm>
michael@0: #include "mozilla/Preferences.h"
michael@0: #include "nsChildView.h"
michael@0: #include "nsCocoaFeatures.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: #define kInputWindowHeight 20
michael@0: 
michael@0: @implementation ComplexTextInputPanel
michael@0: 
michael@0: + (ComplexTextInputPanel*)sharedComplexTextInputPanel
michael@0: {
michael@0:   static ComplexTextInputPanel *sComplexTextInputPanel;
michael@0:   if (!sComplexTextInputPanel)
michael@0:     sComplexTextInputPanel = [[ComplexTextInputPanel alloc] init];
michael@0:   return sComplexTextInputPanel;
michael@0: }
michael@0: 
michael@0: - (id)init
michael@0: {
michael@0:   // In the original Apple code the style mask is given by a function which is not open source.
michael@0:   // What could possibly be worth hiding in that function, I do not know.
michael@0:   // Courtesy of gdb: stylemask: 011000011111, 0x61f
michael@0:   self = [super initWithContentRect:NSZeroRect styleMask:0x61f backing:NSBackingStoreBuffered defer:YES];
michael@0:   if (!self)
michael@0:     return nil;
michael@0: 
michael@0:   // Set the frame size.
michael@0:   NSRect visibleFrame = [[NSScreen mainScreen] visibleFrame];
michael@0:   NSRect frame = NSMakeRect(visibleFrame.origin.x, visibleFrame.origin.y, visibleFrame.size.width, kInputWindowHeight);
michael@0: 
michael@0:   [self setFrame:frame display:NO];
michael@0: 
michael@0:   mInputTextView = [[NSTextView alloc] initWithFrame:[self.contentView frame]];        
michael@0:   mInputTextView.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable | NSViewMaxXMargin | NSViewMinXMargin | NSViewMaxYMargin | NSViewMinYMargin;
michael@0: 
michael@0:   NSScrollView* scrollView = [[NSScrollView alloc] initWithFrame:[self.contentView frame]];
michael@0:   scrollView.documentView = mInputTextView;
michael@0:   self.contentView = scrollView;
michael@0:   [scrollView release];
michael@0: 
michael@0:   [self setFloatingPanel:YES];
michael@0: 
michael@0:   [[NSNotificationCenter defaultCenter] addObserver:self
michael@0:                                            selector:@selector(keyboardInputSourceChanged:)
michael@0:                                                name:NSTextInputContextKeyboardSelectionDidChangeNotification
michael@0:                                              object:nil];
michael@0: 
michael@0:   return self;
michael@0: }
michael@0: 
michael@0: - (void)dealloc
michael@0: {
michael@0:   [[NSNotificationCenter defaultCenter] removeObserver:self];
michael@0:   
michael@0:   [mInputTextView release];
michael@0:   
michael@0:   [super dealloc];
michael@0: }
michael@0: 
michael@0: - (void)keyboardInputSourceChanged:(NSNotification *)notification
michael@0: {
michael@0:   static int8_t sDoCancel = -1;
michael@0:   if (!sDoCancel || ![self inComposition]) {
michael@0:     return;
michael@0:   }
michael@0:   if (sDoCancel < 0) {
michael@0:     bool cancelComposition = false;
michael@0:     static const char* kPrefName =
michael@0:       "ui.plugin.cancel_composition_at_input_source_changed";
michael@0:     nsresult rv = Preferences::GetBool(kPrefName, &cancelComposition);
michael@0:     NS_ENSURE_SUCCESS(rv, );
michael@0:     sDoCancel = cancelComposition ? 1 : 0;
michael@0:   }
michael@0:   if (sDoCancel) {
michael@0:     [self cancelComposition];
michael@0:   }
michael@0: }
michael@0: 
michael@0: - (BOOL)interpretKeyEvent:(NSEvent*)event string:(NSString**)string
michael@0: {
michael@0:   BOOL hadMarkedText = [mInputTextView hasMarkedText];
michael@0: 
michael@0:   *string = nil;
michael@0: 
michael@0:   if (![[mInputTextView inputContext] handleEvent:event])
michael@0:     return NO;
michael@0: 
michael@0:   if ([mInputTextView hasMarkedText]) {
michael@0:     // Don't show the input method window for dead keys
michael@0:     if ([[event characters] length] > 0)
michael@0:       [self orderFront:nil];
michael@0: 
michael@0:     return YES;
michael@0:   } else {
michael@0:     [self orderOut:nil];
michael@0: 
michael@0:     NSString *text = [[mInputTextView textStorage] string];
michael@0:     if ([text length] > 0)
michael@0:       *string = [[text copy] autorelease];
michael@0:   }
michael@0: 
michael@0:   [mInputTextView setString:@""];
michael@0:   return hadMarkedText;
michael@0: }
michael@0: 
michael@0: - (NSTextInputContext*)inputContext
michael@0: {
michael@0:   return [mInputTextView inputContext];
michael@0: }
michael@0: 
michael@0: - (void)cancelComposition
michael@0: {
michael@0:   [mInputTextView setString:@""];
michael@0:   [self orderOut:nil];
michael@0: }
michael@0: 
michael@0: - (BOOL)inComposition
michael@0: {
michael@0:   return [mInputTextView hasMarkedText];
michael@0: }
michael@0: 
michael@0: - (void)adjustTo:(NSView*)view
michael@0: {
michael@0:   NSRect viewRect = [view frame];
michael@0:   viewRect.origin.x = 0;
michael@0:   viewRect.origin.y = 0;
michael@0:   viewRect = [view convertRect:viewRect toView:nil];
michael@0:   if (nsCocoaFeatures::OnLionOrLater()) {
michael@0:     viewRect = [[view window] convertRectToScreen:viewRect];
michael@0:   } else {
michael@0:     viewRect.origin = [[view window] convertBaseToScreen:viewRect.origin];
michael@0:   }
michael@0:   NSRect selfRect = [self frame];
michael@0:   CGFloat minWidth = static_cast<CGFloat>(
michael@0:                        Preferences::GetUint("ui.plugin.panel.min-width", 500));
michael@0:   NSRect rect = NSMakeRect(viewRect.origin.x,
michael@0:                            viewRect.origin.y - selfRect.size.height,
michael@0:                            std::max(viewRect.size.width, minWidth),
michael@0:                            selfRect.size.height);
michael@0: 
michael@0:   // Adjust to screen.
michael@0:   NSRect screenRect = [[NSScreen mainScreen] visibleFrame];
michael@0:   if (rect.origin.x < screenRect.origin.x) {
michael@0:     rect.origin.x = screenRect.origin.x;
michael@0:   }
michael@0:   if (rect.origin.y < screenRect.origin.y) {
michael@0:     rect.origin.y = screenRect.origin.y;
michael@0:   }
michael@0:   CGFloat xMostOfScreen = screenRect.origin.x + screenRect.size.width;
michael@0:   CGFloat yMostOfScreen = screenRect.origin.y + screenRect.size.height;
michael@0:   CGFloat xMost = rect.origin.x + rect.size.width;
michael@0:   CGFloat yMost = rect.origin.y + rect.size.height;
michael@0:   if (xMostOfScreen < xMost) {
michael@0:     rect.origin.x -= xMost - xMostOfScreen;
michael@0:   }
michael@0:   if (yMostOfScreen < yMost) {
michael@0:     rect.origin.y -= yMost - yMostOfScreen;
michael@0:   }
michael@0: 
michael@0:   [self setFrame:rect display:[self isVisible]];
michael@0: }
michael@0: 
michael@0: @end