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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 "WebKitDLL.h"
     28 #include "WebActionPropertyBag.h"
     29 
     30 #include "DOMCoreClasses.h"
     31 #include "WebElementPropertyBag.h"
     32 #include "WebKit.h"
     33 #include <WebCore/BString.h>
     34 #include <WebCore/COMPtr.h>
     35 #include <WebCore/EventHandler.h>
     36 #include <WebCore/HitTestResult.h>
     37 #include <WebCore/MouseEvent.h>
     38 
     39 using namespace WebCore;
     40 
     41 // WebActionPropertyBag ------------------------------------------------
     42 
     43 WebActionPropertyBag::WebActionPropertyBag(const NavigationAction& action, PassRefPtr<HTMLFormElement> form, PassRefPtr<Frame> frame)
     44     : m_refCount(0)
     45     , m_action(action)
     46     , m_form(form)
     47     , m_frame(frame)
     48 {
     49     gClassCount++;
     50     gClassNameCount.add("WebActionPropertyBag");
     51 }
     52 
     53 WebActionPropertyBag::~WebActionPropertyBag()
     54 {
     55     gClassCount--;
     56     gClassNameCount.remove("WebActionPropertyBag");
     57 }
     58 
     59 WebActionPropertyBag* WebActionPropertyBag::createInstance(const NavigationAction& action, PassRefPtr<HTMLFormElement> form, PassRefPtr<Frame> frame)
     60 {
     61     WebActionPropertyBag* instance = new WebActionPropertyBag(action, form, frame);
     62     instance->AddRef();
     63     return instance;
     64 }
     65 
     66 // IUnknown -------------------------------------------------------------------
     67 
     68 HRESULT STDMETHODCALLTYPE WebActionPropertyBag::QueryInterface(REFIID riid, void** ppvObject)
     69 {
     70     *ppvObject = 0;
     71     if (IsEqualGUID(riid, IID_IUnknown))
     72         *ppvObject = static_cast<IPropertyBag*>(this);
     73     else if (IsEqualGUID(riid, IID_IPropertyBag))
     74         *ppvObject = static_cast<IPropertyBag*>(this);
     75     else
     76         return E_NOINTERFACE;
     77 
     78     AddRef();
     79     return S_OK;
     80 }
     81 
     82 ULONG STDMETHODCALLTYPE WebActionPropertyBag::AddRef()
     83 {
     84     return ++m_refCount;
     85 }
     86 
     87 ULONG STDMETHODCALLTYPE WebActionPropertyBag::Release()
     88 {
     89     ULONG newRef = --m_refCount;
     90     if (!newRef)
     91         delete this;
     92 
     93     return newRef;
     94 }
     95 
     96 static bool isEqual(LPCWSTR s1, LPCWSTR s2)
     97 {
     98     return !wcscmp(s1, s2);
     99 }
    100 
    101 static const MouseEvent* findMouseEvent(const Event* event)
    102 {
    103     for (const Event* e = event; e; e = e->underlyingEvent())
    104         if (e->isMouseEvent())
    105             return static_cast<const MouseEvent*>(e);
    106     return 0;
    107 }
    108 
    109 HRESULT STDMETHODCALLTYPE WebActionPropertyBag::Read(LPCOLESTR pszPropName, VARIANT *pVar, IErrorLog * /*pErrorLog*/)
    110 {
    111     if (!pszPropName)
    112         return E_POINTER;
    113 
    114     VariantClear(pVar);
    115 
    116     if (isEqual(pszPropName, WebActionNavigationTypeKey)) {
    117         V_VT(pVar) = VT_I4;
    118         V_I4(pVar) = m_action.type();
    119         return S_OK;
    120     }
    121     if (isEqual(pszPropName, WebActionElementKey)) {
    122         if (const MouseEvent* mouseEvent = findMouseEvent(m_action.event())) {
    123             V_VT(pVar) = VT_UNKNOWN;
    124             V_UNKNOWN(pVar) = WebElementPropertyBag::createInstance(m_frame->eventHandler()->hitTestResultAtPoint(mouseEvent->absoluteLocation(), false));
    125             return S_OK;
    126         }
    127     }
    128     if (isEqual(pszPropName, WebActionButtonKey)) {
    129         if (const MouseEvent* mouseEvent = findMouseEvent(m_action.event())) {
    130             V_VT(pVar) = VT_I4;
    131             V_I4(pVar) = mouseEvent->button();
    132             return S_OK;
    133         }
    134     }
    135     if (isEqual(pszPropName, WebActionOriginalURLKey)) {
    136         V_VT(pVar) = VT_BSTR;
    137         V_BSTR(pVar) = BString(m_action.url().string()).release();
    138         return S_OK;
    139     }
    140     if (isEqual(pszPropName, WebActionModifierFlagsKey)) {
    141         if (const UIEventWithKeyState* keyEvent = findEventWithKeyState(const_cast<Event*>(m_action.event()))) {
    142             unsigned modifiers = 0;
    143 
    144             if (keyEvent->ctrlKey())
    145                 modifiers |= MK_CONTROL;
    146             if (keyEvent->shiftKey())
    147                 modifiers |= MK_SHIFT;
    148             if (keyEvent->altKey())
    149                 modifiers |= MK_ALT;
    150 
    151             V_VT(pVar) = VT_UI4;
    152             V_UI4(pVar) = modifiers;
    153             return S_OK;
    154         }
    155     }
    156     if (isEqual(pszPropName, WebActionFormKey)) {
    157         IDOMNode* form = DOMNode::createInstance(m_form.get());
    158         V_VT(pVar) = VT_UNKNOWN;
    159         V_UNKNOWN(pVar) = form;
    160         return S_OK;
    161     }
    162     return E_INVALIDARG;
    163 }
    164 
    165 HRESULT STDMETHODCALLTYPE WebActionPropertyBag::Write(LPCOLESTR pszPropName, VARIANT* pVar)
    166 {
    167     if (!pszPropName || !pVar)
    168         return E_POINTER;
    169 
    170     return E_FAIL;
    171 }
    172