source: releases/ICeCoffEE/1.4.1/ICeCoffEE/ICeCoffEEWebKit.m@ 338

//
//  ICeCoffEEWebKit.m
//  ICeCoffEE APE
//
//  Created by Nicholas Riley on Sun Jan 19 2003.
//  Copyright (c) 2003 Nicholas Riley. All rights reserved.
//

#import "ICeCoffEEWebKit.h"
#import <unistd.h>

// from WebCoreBridge.h
@interface WebCoreBridge : NSObject

- (NSDictionary *)elementAtPoint:(NSPoint)point;
- (NSString *)selectedString;
- (void)deselectAll;

// only in Safari 1.0-1.2
- (void)setSelectionFrom:(id /* WebDOMNode */)start startOffset:(int)startOffset to:(id /* WebDOMNode */)end endOffset:(int) endOffset;

- (id /* WebDOMNode */)selectionStart;
- (int)selectionStartOffset;
- (id /* WebDOMNode */)selectionEnd;
- (int)selectionEndOffset;

// only in Safari 1.1-1.2
- (NSRect)selectionRect;

// only in Safari 1.3
- (void)selectNSRange:(NSRange)range;

@end

// from WebKit, private
@interface WebHTMLView : NSObject

- (WebCoreBridge *)_bridge;

// only in Safari 1.3
- (NSRange)selectedRange;

@end

@implementation ICeCoffEEWebKit

- (NSMenu *)menuForEvent:(NSEvent *)e;
{
    NSMenu *myMenu = [super menuForEvent: e];
    return ICCF_MenuForEvent(self, myMenu, e);
}

static NSEvent *downEvent = nil;

// used in Safari < 1.3 because there's no sane way to set the selection
typedef struct {
    int startOffset;
    int endOffset;
    id fromNode;
    id toNode;
} ICCF_WebCoreSelection;

static ICCF_WebCoreSelection selection = {nil, nil, 0, 0};

void ICCF_GetWebCoreBridgeSelection(WebCoreBridge *bridge, ICCF_WebCoreSelection *ioSel) {
    [ioSel->fromNode release]; ioSel->fromNode = nil;
    [ioSel->toNode release]; ioSel->toNode = nil;
    ioSel->startOffset = [bridge selectionStartOffset];
    ioSel->endOffset = [bridge selectionEndOffset];
    ioSel->fromNode = [[bridge selectionStart] retain];
    ioSel->toNode = [[bridge selectionEnd] retain];
}

void ICCF_SetWebCoreBridgeSelection(WebCoreBridge *bridge, ICCF_WebCoreSelection *inSel) {
    if (inSel->fromNode == nil || inSel->toNode == nil)
        [bridge deselectAll];
    [bridge setSelectionFrom: inSel->fromNode
                 startOffset: inSel->startOffset
                          to: inSel->toNode
                   endOffset: inSel->endOffset];
}
// end Safari < 1.3 section

static NSString *selectedString = nil;
static NSRange selectedRange;

- (void)mouseDown:(NSEvent *)e;
{
        [downEvent release]; downEvent = nil;
    // don't want command-option-click, command-shift-click, etc. to trigger
    if (ICCF_enabled && ICCF_prefs.commandClickEnabled && ICCF_EventIsCommandMouseDown(e)) {
        WebCoreBridge *bridge = [(WebHTMLView *)self _bridge];
                if ([self respondsToSelector: @selector(selectedRange)]) {
                        // Safari 1.3 save selection: it may be deselected on super mouseDown
                        selectedRange = [(WebHTMLView *)self selectedRange];
                } else if ([bridge respondsToSelector: @selector(selectionStartOffset)]) {
                        // Safari < 1.3 save selection: it will be deselected on super mouseDown
                        ICCF_GetWebCoreBridgeSelection(bridge, &selection);
                        ICLog(@"selection start %d@%@ end %d@%@ string %@", [bridge selectionStartOffset], [bridge selectionStart], [bridge selectionEndOffset], [bridge selectionEnd], [bridge selectedString]);
                }
                [selectedString release]; selectedString = nil;
                selectedString = [[bridge selectedString] retain];
        downEvent = [e retain];
    }
    [super mouseDown: e];
}

- (void)mouseUp:(NSEvent *)e;
{
    [super mouseUp: e];
    if (downEvent != nil) {
        NSPoint downPt = [downEvent locationInWindow];
        NSPoint upPt = [e locationInWindow];
                [downEvent release]; downEvent = nil;
        if (abs(downPt.x - upPt.x) > kICHysteresisPixels && abs(downPt.y - upPt.y) > kICHysteresisPixels)
            return;

        NS_DURING
            WebCoreBridge *bridge = [(WebHTMLView *)self _bridge];
            NSPoint viewClickPt = [self convertPoint: downPt fromView: nil];
            NSDictionary *elementDict = [bridge elementAtPoint: viewClickPt];
            ICLog(@"elementDict: %@", elementDict);
            NSAssert([elementDict count] != 0, @"Internal error: Got empty element dictionary from WebHTMLView");
            if ([elementDict objectForKey: @"WebElementLinkURL"] != nil) {
                ICLog(@"got a link");
                NS_VOIDRETURN; // donÕt activate on links
            }
                        if (selectedString == nil || [selectedString length] == 0) {
                                ICLog(@"no selected string");
                                NS_VOIDRETURN;
                        }
                        ICCF_StartIC();
                        ICCF_LaunchURL(selectedString, ICCF_KeyboardAction());
                        if (ICCF_prefs.textBlinkEnabled &&
                                [bridge respondsToSelector: @selector(selectNSRange:)]) {
                                // blink text in Safari 1.3
                                [bridge selectNSRange: selectedRange];
                                int i;
                                NSRect selectionRect = [bridge selectionRect];
                                ICLog(@"selectedRange %@ selectionRect %@ textBlinkCount %d", NSStringFromRange(selectedRange), NSStringFromRect(selectionRect), ICCF_prefs.textBlinkCount);
                                for (i = 0 ; i < ICCF_prefs.textBlinkCount ; i++) {
                                        [bridge deselectAll];
                                        [self setNeedsDisplayInRect: selectionRect];
                                        [self display];
                                        usleep(kICBlinkDelayUsecs);
                                        [bridge selectNSRange: selectedRange];
                                        [self setNeedsDisplayInRect: selectionRect];
                                        [self display];
                                        usleep(kICBlinkDelayUsecs);
                                }
                        } else {
                                // select text in Safari 1.0-1.2
                                ICCF_SetWebCoreBridgeSelection(bridge, &selection);
                                if (ICCF_prefs.textBlinkEnabled &&
                                        [bridge respondsToSelector: @selector(selectionRect)]) {
                                        // blink text in Safari 1.1/1.2
                                        int i;
                                        NSRect selectionRect = [bridge selectionRect];
                                        for (i = 0 ; i < ICCF_prefs.textBlinkCount ; i++) {
                                                [bridge deselectAll];
                                                [self setNeedsDisplayInRect: selectionRect];
                                                [self display];
                                                usleep(kICBlinkDelayUsecs);
                                                ICCF_SetWebCoreBridgeSelection(bridge, &selection);
                                                [self setNeedsDisplayInRect: selectionRect];
                                                [self display];
                                                usleep(kICBlinkDelayUsecs);
                                        }
                                }
                        }
        NS_HANDLER
            ICCF_HandleException(localException);
        NS_ENDHANDLER

        ICCF_StopIC();
    }        
}

@end