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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #import "config.h"
     27 #import "WKTextInputWindowController.h"
     28 
     29 #import <WebKitSystemInterface.h>
     30 
     31 @interface WKTextInputPanel : NSPanel {
     32     NSTextView *_inputTextView;
     33 }
     34 
     35 - (NSTextInputContext *)_inputContext;
     36 - (BOOL)_interpretKeyEvent:(NSEvent *)event string:(NSString **)string;
     37 
     38 @end
     39 
     40 #define inputWindowHeight 20
     41 
     42 @implementation WKTextInputPanel
     43 
     44 - (void)dealloc
     45 {
     46     [[NSNotificationCenter defaultCenter] removeObserver:self];
     47 
     48     [_inputTextView release];
     49 
     50     [super dealloc];
     51 }
     52 
     53 - (id)init
     54 {
     55     self = [super initWithContentRect:NSZeroRect styleMask:WKGetInputPanelWindowStyle() backing:NSBackingStoreBuffered defer:YES];
     56     if (!self)
     57         return nil;
     58 
     59     // Set the frame size.
     60     NSRect visibleFrame = [[NSScreen mainScreen] visibleFrame];
     61     NSRect frame = NSMakeRect(visibleFrame.origin.x, visibleFrame.origin.y, visibleFrame.size.width, inputWindowHeight);
     62 
     63     [self setFrame:frame display:NO];
     64 
     65     _inputTextView = [[NSTextView alloc] initWithFrame:[self.contentView frame]];
     66     _inputTextView.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable | NSViewMaxXMargin | NSViewMinXMargin | NSViewMaxYMargin | NSViewMinYMargin;
     67 
     68     NSScrollView* scrollView = [[NSScrollView alloc] initWithFrame:[self.contentView frame]];
     69     scrollView.documentView = _inputTextView;
     70     self.contentView = scrollView;
     71     [scrollView release];
     72 
     73     [self setFloatingPanel:YES];
     74 
     75     return self;
     76 }
     77 
     78 - (void)_keyboardInputSourceChanged
     79 {
     80     [_inputTextView setString:@""];
     81     [self orderOut:nil];
     82 }
     83 
     84 - (BOOL)_interpretKeyEvent:(NSEvent *)event string:(NSString **)string
     85 {
     86     BOOL hadMarkedText = [_inputTextView hasMarkedText];
     87 
     88     *string = nil;
     89 
     90     // Let TSM know that a bottom input window would be created for marked text.
     91     EventRef carbonEvent = static_cast<EventRef>(const_cast<void*>([event eventRef]));
     92     if (carbonEvent) {
     93         Boolean ignorePAH = true;
     94         SetEventParameter(carbonEvent, 'iPAH', typeBoolean, sizeof(ignorePAH), &ignorePAH);
     95     }
     96 
     97     if (![[_inputTextView inputContext] handleEvent:event])
     98         return NO;
     99 
    100     if ([_inputTextView hasMarkedText]) {
    101         // Don't show the input method window for dead keys
    102         if ([[event characters] length] > 0)
    103             [self orderFront:nil];
    104 
    105         return YES;
    106     }
    107 
    108     if (hadMarkedText) {
    109         [self orderOut:nil];
    110 
    111         NSString *text = [[_inputTextView textStorage] string];
    112         if ([text length] > 0)
    113             *string = [[text copy] autorelease];
    114     }
    115 
    116     [_inputTextView setString:@""];
    117     return hadMarkedText;
    118 }
    119 
    120 - (NSTextInputContext *)_inputContext
    121 {
    122     return [_inputTextView inputContext];
    123 }
    124 
    125 @end
    126 
    127 @implementation WKTextInputWindowController
    128 
    129 + (WKTextInputWindowController *)sharedTextInputWindowController
    130 {
    131     static WKTextInputWindowController *textInputWindowController;
    132     if (!textInputWindowController)
    133         textInputWindowController = [[WKTextInputWindowController alloc] init];
    134 
    135     return textInputWindowController;
    136 }
    137 
    138 - (id)init
    139 {
    140     self = [super init];
    141     if (!self)
    142         return nil;
    143 
    144     _panel = [[WKTextInputPanel alloc] init];
    145 
    146     return self;
    147 }
    148 
    149 - (NSTextInputContext *)inputContext
    150 {
    151     return [_panel _inputContext];
    152 }
    153 
    154 - (BOOL)interpretKeyEvent:(NSEvent *)event string:(NSString **)string
    155 {
    156     return [_panel _interpretKeyEvent:event string:string];
    157 }
    158 
    159 - (void)keyboardInputSourceChanged
    160 {
    161     [_panel _keyboardInputSourceChanged];
    162 }
    163 
    164 @end
    165