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      1 /*
      2  * Copyright (C) 2007, 2008 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 COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "DragData.h"
     28 
     29 #include "ClipboardWin.h"
     30 #include "ClipboardUtilitiesWin.h"
     31 #include "ClipboardAccessPolicy.h"
     32 #include "DocumentFragment.h"
     33 #include "PlatformString.h"
     34 #include "Markup.h"
     35 #include "TextEncoding.h"
     36 #include <objidl.h>
     37 #include <shlwapi.h>
     38 #include <wininet.h>
     39 
     40 namespace WebCore {
     41 
     42 PassRefPtr<Clipboard> DragData::createClipboard(ClipboardAccessPolicy policy) const
     43 {
     44     return ClipboardWin::create(true, m_platformDragData, policy);
     45 }
     46 
     47 bool DragData::containsURL() const
     48 {
     49     return SUCCEEDED(m_platformDragData->QueryGetData(urlWFormat()))
     50         || SUCCEEDED(m_platformDragData->QueryGetData(urlFormat()))
     51         || SUCCEEDED(m_platformDragData->QueryGetData(filenameWFormat()))
     52         || SUCCEEDED(m_platformDragData->QueryGetData(filenameFormat()));
     53 }
     54 
     55 String DragData::asURL(String* title) const
     56 {
     57     bool success;
     58     return getURL(m_platformDragData, success, title);
     59 }
     60 
     61 bool DragData::containsFiles() const
     62 {
     63     return SUCCEEDED(m_platformDragData->QueryGetData(cfHDropFormat()));
     64 }
     65 
     66 void DragData::asFilenames(Vector<String>& result) const
     67 {
     68     WCHAR filename[MAX_PATH];
     69 
     70     STGMEDIUM medium;
     71     if (FAILED(m_platformDragData->GetData(cfHDropFormat(), &medium)))
     72         return;
     73 
     74     HDROP hdrop = (HDROP)GlobalLock(medium.hGlobal);
     75 
     76     if (!hdrop)
     77         return;
     78 
     79     const unsigned numFiles = DragQueryFileW(hdrop, 0xFFFFFFFF, 0, 0);
     80     for (unsigned i = 0; i < numFiles; i++) {
     81         if (!DragQueryFileW(hdrop, 0, filename, ARRAYSIZE(filename)))
     82             continue;
     83         result.append((UChar*)filename);
     84     }
     85 
     86     // Free up memory from drag
     87     DragFinish(hdrop);
     88 
     89     GlobalUnlock(medium.hGlobal);
     90 }
     91 
     92 bool DragData::containsPlainText() const
     93 {
     94     return SUCCEEDED(m_platformDragData->QueryGetData(plainTextWFormat()))
     95         || SUCCEEDED(m_platformDragData->QueryGetData(plainTextFormat()));
     96 }
     97 
     98 String DragData::asPlainText() const
     99 {
    100     bool success;
    101     return getPlainText(m_platformDragData, success);
    102 }
    103 
    104 bool DragData::containsColor() const
    105 {
    106     return false;
    107 }
    108 
    109 bool DragData::canSmartReplace() const
    110 {
    111     return SUCCEEDED(m_platformDragData->QueryGetData(smartPasteFormat()));
    112 }
    113 
    114 bool DragData::containsCompatibleContent() const
    115 {
    116     return containsPlainText() || containsURL()
    117         || containsHTML(m_platformDragData)
    118         || containsFilenames(m_platformDragData)
    119         || containsColor();
    120 }
    121 
    122 PassRefPtr<DocumentFragment> DragData::asFragment(Document* doc) const
    123 {
    124     /*
    125      * Order is richest format first. On OSX this is:
    126      * * Web Archive
    127      * * Filenames
    128      * * HTML
    129      * * RTF
    130      * * TIFF
    131      * * PICT
    132      */
    133 
    134      if (containsFilenames(m_platformDragData))
    135          if (PassRefPtr<DocumentFragment> fragment = fragmentFromFilenames(doc, m_platformDragData))
    136              return fragment;
    137 
    138      if (containsHTML(m_platformDragData))
    139          if (PassRefPtr<DocumentFragment> fragment = fragmentFromHTML(doc, m_platformDragData))
    140              return fragment;
    141 
    142      return 0;
    143 }
    144 
    145 Color DragData::asColor() const
    146 {
    147     return Color();
    148 }
    149 
    150 }
    151 
    152