WebTextInputWindowController.m   [plain text]

/*
* Copyright (C) 2009 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#if USE(PLUGIN_HOST_PROCESS)

#import "WebTextInputWindowController.h"

#import <pal/system/mac/WebPanel.h>

@interface WebTextInputView : NSTextView {
}
@end

@implementation WebTextInputView

- (NSArray *)validAttributesForMarkedText
{
// Let TSM know that a bottom input window would be created for marked text.
NSArray *regularAttributes = [super validAttributesForMarkedText];
NSMutableArray *floatingWindowAttributes = [NSMutableArray arrayWithArray:regularAttributes];
[floatingWindowAttributes addObject:@"__NSUsesFloatingInputWindow"];
return floatingWindowAttributes;
}

@end

@interface WebTextInputPanel : WebPanel {
NSTextView *_inputTextView;
}

- (NSTextInputContext *)_inputContext;
- (BOOL)_interpretKeyEvent:(NSEvent *)event string:(NSString **)string;

@end

#define inputWindowHeight 20

@implementation WebTextInputPanel

- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];

[_inputTextView release];

[super dealloc];
}

- (id)init
{
self = [super init];
if (!self)
return nil;

// Set the frame size.
NSRect visibleFrame = [[NSScreen mainScreen] visibleFrame];
NSRect frame = NSMakeRect(visibleFrame.origin.x, visibleFrame.origin.y, visibleFrame.size.width, inputWindowHeight);

[self setFrame:frame display:NO];

_inputTextView = [[WebTextInputView alloc] initWithFrame:[self.contentView frame]];
_inputTextView.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable | NSViewMaxXMargin | NSViewMinXMargin | NSViewMaxYMargin | NSViewMinYMargin;

NSScrollView* scrollView = [[NSScrollView alloc] initWithFrame:[self.contentView frame]];
scrollView.documentView = _inputTextView;
self.contentView = scrollView;
[scrollView release];

[self setFloatingPanel:YES];

[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(_keyboardInputSourceChanged:)
name:NSTextInputContextKeyboardSelectionDidChangeNotification
object:nil];

return self;
}

- (void)_keyboardInputSourceChanged:(NSNotification *)notification
{
[_inputTextView setString:@""];
[self orderOut:nil];
}

- (BOOL)_interpretKeyEvent:(NSEvent *)event string:(NSString **)string
{
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
BOOL hadMarkedText = [_inputTextView hasMarkedText];
#pragma clang diagnostic pop

*string = nil;

// Let TSM know that a bottom input window would be created for marked text.
// FIXME: Can be removed once we can rely on __NSUsesFloatingInputWindow (or a better API) being available everywhere.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wcast-qual"
EventRef carbonEvent = (EventRef)[event eventRef];
#pragma clang diagnostic pop
if (carbonEvent) {
Boolean ignorePAH = true;
SetEventParameter(carbonEvent, 'iPAH', typeBoolean, sizeof(ignorePAH), &ignorePAH);
}

if (![[_inputTextView inputContext] handleEvent:event])
return NO;

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([_inputTextView hasMarkedText]) {
#pragma clang diagnostic pop
// Don't show the input method window for dead keys
if ([[event characters] length] > 0)
[self orderFront:nil];

return YES;
}

if (hadMarkedText) {
[self orderOut:nil];

NSString *text = [[_inputTextView textStorage] string];
if ([text length] > 0)
*string = [[text copy] autorelease];
}

[_inputTextView setString:@""];
return hadMarkedText;
}

- (NSTextInputContext *)_inputContext
{
return [_inputTextView inputContext];
}

@end

@implementation WebTextInputWindowController

+ (WebTextInputWindowController *)sharedTextInputWindowController
{
static WebTextInputWindowController *textInputWindowController;
if (!textInputWindowController)
textInputWindowController = [[WebTextInputWindowController alloc] init];

return textInputWindowController;
}

- (id)init
{
self = [super init];
if (!self)
return nil;

_panel = [[WebTextInputPanel alloc] init];

return self;
}

- (NSTextInputContext *)inputContext
{
return [_panel _inputContext];
}

- (BOOL)interpretKeyEvent:(NSEvent *)event string:(NSString **)string
{
return [_panel _interpretKeyEvent:event string:string];
}

@end

#endif // USE(PLUGIN_HOST_PROCESS)