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      1 /*
      2  * Copyright (C) 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  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "JSClipboard.h"
     31 
     32 #include "Clipboard.h"
     33 #include "Element.h"
     34 #include "HTMLImageElement.h"
     35 #include "HTMLNames.h"
     36 #include "IntPoint.h"
     37 #include "JSNode.h"
     38 #include "Node.h"
     39 #include "PlatformString.h"
     40 #include <runtime/ArrayPrototype.h>
     41 #include <runtime/Error.h>
     42 #include <wtf/HashSet.h>
     43 #include <wtf/text/StringHash.h>
     44 
     45 using namespace JSC;
     46 
     47 namespace WebCore {
     48 
     49 using namespace HTMLNames;
     50 
     51 JSValue JSClipboard::types(ExecState* exec) const
     52 {
     53     Clipboard* clipboard = impl();
     54 
     55     HashSet<String> types = clipboard->types();
     56     if (types.isEmpty())
     57         return jsNull();
     58 
     59     MarkedArgumentBuffer list;
     60     HashSet<String>::const_iterator end = types.end();
     61     for (HashSet<String>::const_iterator it = types.begin(); it != end; ++it)
     62         list.append(jsString(exec, stringToUString(*it)));
     63     return constructArray(exec, list);
     64 }
     65 
     66 JSValue JSClipboard::clearData(ExecState* exec)
     67 {
     68     Clipboard* clipboard = impl();
     69 
     70     if (!exec->argumentCount()) {
     71         clipboard->clearAllData();
     72         return jsUndefined();
     73     }
     74 
     75     if (exec->argumentCount() == 1) {
     76         clipboard->clearData(ustringToString(exec->argument(0).toString(exec)));
     77         return jsUndefined();
     78     }
     79 
     80     // FIXME: It does not match the rest of the JS bindings to throw on invalid number of arguments.
     81     return throwError(exec, createSyntaxError(exec, "clearData: Invalid number of arguments"));
     82 }
     83 
     84 JSValue JSClipboard::getData(ExecState* exec)
     85 {
     86     // FIXME: It does not match the rest of the JS bindings to throw on invalid number of arguments.
     87     if (exec->argumentCount() != 1)
     88         return throwError(exec, createSyntaxError(exec, "getData: Invalid number of arguments"));
     89 
     90     Clipboard* clipboard = impl();
     91 
     92     bool success;
     93     String result = clipboard->getData(ustringToString(exec->argument(0).toString(exec)), success);
     94     if (!success)
     95         return jsUndefined();
     96 
     97     return jsString(exec, result);
     98 }
     99 
    100 JSValue JSClipboard::setDragImage(ExecState* exec)
    101 {
    102     Clipboard* clipboard = impl();
    103 
    104     if (!clipboard->isForDragAndDrop())
    105         return jsUndefined();
    106 
    107     // FIXME: It does not match the rest of the JS bindings to throw on invalid number of arguments.
    108     if (exec->argumentCount() != 3)
    109         return throwError(exec, createSyntaxError(exec, "setDragImage: Invalid number of arguments"));
    110 
    111     int x = exec->argument(1).toInt32(exec);
    112     int y = exec->argument(2).toInt32(exec);
    113 
    114     // See if they passed us a node
    115     Node* node = toNode(exec->argument(0));
    116     if (!node)
    117         return throwTypeError(exec);
    118 
    119     // FIXME: This should probably be a TypeError.
    120     if (!node->isElementNode())
    121         return throwError(exec, createSyntaxError(exec, "setDragImageFromElement: Invalid first argument"));
    122 
    123     if (static_cast<Element*>(node)->hasLocalName(imgTag) && !node->inDocument())
    124         clipboard->setDragImage(static_cast<HTMLImageElement*>(node)->cachedImage(), IntPoint(x, y));
    125     else
    126         clipboard->setDragImageElement(node, IntPoint(x, y));
    127 
    128     return jsUndefined();
    129 }
    130 
    131 } // namespace WebCore
    132