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/*
* Copyright (C) 2007, 2008 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 COMPUTER, 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 COMPUTER, 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.
*/
#import "WebDragClient.h"
#import "WebArchive.h"
#import "WebDOMOperations.h"
#import "WebFrame.h"
#import "WebFrameInternal.h"
#import "WebHTMLViewInternal.h"
#import "WebHTMLViewPrivate.h"
#import "WebKitLogging.h"
#import "WebKitNSStringExtras.h"
#import "WebNSPasteboardExtras.h"
#import "WebNSURLExtras.h"
#import "WebStringTruncator.h"
#import "WebUIDelegate.h"
#import "WebUIDelegatePrivate.h"
#import "WebViewInternal.h"
#import <WebCore/ClipboardMac.h>
#import <WebCore/DragData.h>
#import <WebCore/Editor.h>
#import <WebCore/EditorClient.h>
#import <WebCore/EventHandler.h>
#import <WebCore/Frame.h>
#import <WebCore/FrameView.h>
#import <WebCore/Image.h>
#import <WebCore/Page.h>
using namespace WebCore;
const float DragLabelBorderX = 4;
//Keep border_y in synch with DragController::LinkDragBorderInset
const float DragLabelBorderY = 2;
const float DragLabelRadius = 5;
const float LabelBorderYOffset = 2;
const float MinDragLabelWidthBeforeClip = 120;
const float MaxDragLabelWidth = 320;
const float DragLinkLabelFontsize = 11;
const float DragLinkUrlFontSize = 10;
WebDragClient::WebDragClient(WebView* webView)
: m_webView(webView)
{
}
static WebHTMLView *getTopHTMLView(Frame* frame)
{
ASSERT(frame);
ASSERT(frame->page());
return (WebHTMLView*)[[kit(frame->page()->mainFrame()) frameView] documentView];
}
WebCore::DragDestinationAction WebDragClient::actionMaskForDrag(WebCore::DragData* dragData)
{
return (WebCore::DragDestinationAction)[[m_webView _UIDelegateForwarder] webView:m_webView dragDestinationActionMaskForDraggingInfo:dragData->platformData()];
}
void WebDragClient::willPerformDragDestinationAction(WebCore::DragDestinationAction action, WebCore::DragData* dragData)
{
[[m_webView _UIDelegateForwarder] webView:m_webView willPerformDragDestinationAction:(WebDragDestinationAction)action forDraggingInfo:dragData->platformData()];
}
WebCore::DragSourceAction WebDragClient::dragSourceActionMaskForPoint(const IntPoint& windowPoint)
{
NSPoint viewPoint = [m_webView convertPoint:windowPoint fromView:nil];
return (DragSourceAction)[[m_webView _UIDelegateForwarder] webView:m_webView dragSourceActionMaskForPoint:viewPoint];
}
void WebDragClient::willPerformDragSourceAction(WebCore::DragSourceAction action, const WebCore::IntPoint& mouseDownPoint, WebCore::Clipboard* clipboard)
{
ASSERT(clipboard);
[[m_webView _UIDelegateForwarder] webView:m_webView willPerformDragSourceAction:(WebDragSourceAction)action fromPoint:mouseDownPoint withPasteboard:static_cast<WebCore::ClipboardMac*>(clipboard)->pasteboard()];
}
void WebDragClient::startDrag(DragImageRef dragImage, const IntPoint& at, const IntPoint& eventPos, Clipboard* clipboard, Frame* frame, bool linkDrag)
{
if (!frame)
return;
ASSERT(clipboard);
RetainPtr<WebHTMLView> htmlView = (WebHTMLView*)[[kit(frame) frameView] documentView];
if (![htmlView.get() isKindOfClass:[WebHTMLView class]])
return;
NSEvent *event = linkDrag ? frame->eventHandler()->currentNSEvent() : [htmlView.get() _mouseDownEvent];
WebHTMLView* topHTMLView = getTopHTMLView(frame);
RetainPtr<WebHTMLView> topViewProtector = topHTMLView;
[topHTMLView _stopAutoscrollTimer];
NSPasteboard *pasteboard = static_cast<ClipboardMac*>(clipboard)->pasteboard();
NSImage *dragNSImage = dragImage.get();
WebHTMLView *sourceHTMLView = htmlView.get();
id delegate = [m_webView UIDelegate];
SEL selector = @selector(webView:dragImage:at:offset:event:pasteboard:source:slideBack:forView:);
if ([delegate respondsToSelector:selector]) {
if ([m_webView _catchesDelegateExceptions]) {
@try {
[delegate webView:m_webView dragImage:dragNSImage at:at offset:NSZeroSize event:event pasteboard:pasteboard source:sourceHTMLView slideBack:YES forView:topHTMLView];
} @catch (id exception) {
ReportDiscardedDelegateException(selector, exception);
}
} else
[delegate webView:m_webView dragImage:dragNSImage at:at offset:NSZeroSize event:event pasteboard:pasteboard source:sourceHTMLView slideBack:YES forView:topHTMLView];
} else
[topHTMLView dragImage:dragNSImage at:at offset:NSZeroSize event:event pasteboard:pasteboard source:sourceHTMLView slideBack:YES];
}
DragImageRef WebDragClient::createDragImageForLink(KURL& url, const String& title, Frame* frame)
{
if (!frame)
return nil;
NSString *label = 0;
if (!title.isEmpty())
label = title;
NSURL *cocoaURL = url;
NSString *urlString = [cocoaURL _web_userVisibleString];
BOOL drawURLString = YES;
BOOL clipURLString = NO;
BOOL clipLabelString = NO;
if (!label) {
drawURLString = NO;
label = urlString;
}
NSFont *labelFont = [[NSFontManager sharedFontManager] convertFont:[NSFont systemFontOfSize:DragLinkLabelFontsize]
toHaveTrait:NSBoldFontMask];
NSFont *urlFont = [NSFont systemFontOfSize:DragLinkUrlFontSize];
NSSize labelSize;
labelSize.width = [label _web_widthWithFont: labelFont];
labelSize.height = [labelFont ascender] - [labelFont descender];
if (labelSize.width > MaxDragLabelWidth){
labelSize.width = MaxDragLabelWidth;
clipLabelString = YES;
}
NSSize imageSize;
imageSize.width = labelSize.width + DragLabelBorderX * 2;
imageSize.height = labelSize.height + DragLabelBorderY * 2;
if (drawURLString) {
NSSize urlStringSize;
urlStringSize.width = [urlString _web_widthWithFont: urlFont];
urlStringSize.height = [urlFont ascender] - [urlFont descender];
imageSize.height += urlStringSize.height;
if (urlStringSize.width > MaxDragLabelWidth) {
imageSize.width = max(MaxDragLabelWidth + DragLabelBorderY * 2, MinDragLabelWidthBeforeClip);
clipURLString = YES;
} else
imageSize.width = max(labelSize.width + DragLabelBorderX * 2, urlStringSize.width + DragLabelBorderX * 2);
}
NSImage *dragImage = [[[NSImage alloc] initWithSize: imageSize] autorelease];
[dragImage lockFocus];
[[NSColor colorWithDeviceRed: 0.7f green: 0.7f blue: 0.7f alpha: 0.8f] set];
// Drag a rectangle with rounded corners
NSBezierPath *path = [NSBezierPath bezierPath];
[path appendBezierPathWithOvalInRect: NSMakeRect(0, 0, DragLabelRadius * 2, DragLabelRadius * 2)];
[path appendBezierPathWithOvalInRect: NSMakeRect(0, imageSize.height - DragLabelRadius * 2, DragLabelRadius * 2, DragLabelRadius * 2)];
[path appendBezierPathWithOvalInRect: NSMakeRect(imageSize.width - DragLabelRadius * 2, imageSize.height - DragLabelRadius * 2, DragLabelRadius * 2, DragLabelRadius * 2)];
[path appendBezierPathWithOvalInRect: NSMakeRect(imageSize.width - DragLabelRadius * 2, 0, DragLabelRadius * 2, DragLabelRadius * 2)];
[path appendBezierPathWithRect: NSMakeRect(DragLabelRadius, 0, imageSize.width - DragLabelRadius * 2, imageSize.height)];
[path appendBezierPathWithRect: NSMakeRect(0, DragLabelRadius, DragLabelRadius + 10, imageSize.height - 2 * DragLabelRadius)];
[path appendBezierPathWithRect: NSMakeRect(imageSize.width - DragLabelRadius - 20, DragLabelRadius, DragLabelRadius + 20, imageSize.height - 2 * DragLabelRadius)];
[path fill];
NSColor *topColor = [NSColor colorWithDeviceWhite:0.0f alpha:0.75f];
NSColor *bottomColor = [NSColor colorWithDeviceWhite:1.0f alpha:0.5f];
if (drawURLString) {
if (clipURLString)
urlString = [WebStringTruncator centerTruncateString: urlString toWidth:imageSize.width - (DragLabelBorderX * 2) withFont:urlFont];
[urlString _web_drawDoubledAtPoint:NSMakePoint(DragLabelBorderX, DragLabelBorderY - [urlFont descender])
withTopColor:topColor bottomColor:bottomColor font:urlFont];
}
if (clipLabelString)
label = [WebStringTruncator rightTruncateString: label toWidth:imageSize.width - (DragLabelBorderX * 2) withFont:labelFont];
[label _web_drawDoubledAtPoint:NSMakePoint (DragLabelBorderX, imageSize.height - LabelBorderYOffset - [labelFont pointSize])
withTopColor:topColor bottomColor:bottomColor font:labelFont];
[dragImage unlockFocus];
return dragImage;
}
void WebDragClient::declareAndWriteDragImage(NSPasteboard* pasteboard, DOMElement* element, NSURL* URL, NSString* title, WebCore::Frame* frame)
{
ASSERT(pasteboard);
ASSERT(element);
WebHTMLView *source = getTopHTMLView(frame);
WebArchive *archive = [element webArchive];
[pasteboard _web_declareAndWriteDragImageForElement:element URL:URL title:title archive:archive source:source];
}
void WebDragClient::dragControllerDestroyed()
{
delete this;
}
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