Add new clipboard api and support for it in the ie backend. Also extend the sample to demonstrate the new functions.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/SOC2011_WEBVIEW@68129 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/webview_ie.h

@@ -77,6 +77,14 @@ public:
     virtual wxWebViewZoom GetZoom();
     virtual void SetZoom(wxWebViewZoom zoom);
 
+    //Clipboard functions
+    virtual bool CanCut();
+    virtual bool CanCopy();
+    virtual bool CanPaste();
+    virtual void Cut();
+    virtual void Copy();
+    virtual void Paste();
+
     // ---- IE-specific methods
 
     // FIXME: I seem to be able to access remote webpages even in offline mode...
@@ -124,6 +132,10 @@ private:
     bool m_historyLoadingFromList;
     bool m_historyEnabled;
 
+    //Generic helper functions for IHtmlDocument commands
+    bool CanExecCommand(wxString command);
+    void ExecCommand(wxString command);
+
 };
 
 #endif // wxUSE_WEBVIEW_IE

include/wx/webview.h

@@ -324,6 +324,14 @@ public:
      * Returns whether the web control is currently busy (e.g. loading a page)
      */
     virtual bool IsBusy() = 0;
+
+    //Clipboard functions
+    virtual bool CanCut() = 0;
+    virtual bool CanCopy() = 0;
+    virtual bool CanPaste() = 0;
+    virtual void Cut() = 0;
+    virtual void Copy() = 0;
+    virtual void Paste() = 0;
 };
 
 class WXDLLIMPEXP_WEB wxWebNavigationEvent : public wxCommandEvent

samples/web/web.cpp

@@ -71,6 +71,9 @@ public:
     void OnSetZoom(wxCommandEvent& evt);
     void OnError(wxWebNavigationEvent& evt);
     void OnPrint(wxCommandEvent& evt);
+    void OnCut(wxCommandEvent& evt);
+    void OnCopy(wxCommandEvent& evt);
+    void OnPaste(wxCommandEvent& evt);
 
 private:
     wxTextCtrl* m_url;
@@ -92,6 +95,9 @@ private:
     wxMenuItem* m_tools_handle_navigation;
     wxMenuItem* m_tools_handle_new_window;
     wxMenuItem* m_tools_enable_history;
+    wxMenuItem* m_edit_cut;
+    wxMenuItem* m_edit_copy;
+    wxMenuItem* m_edit_paste;
 
     wxTimer* m_timer;
     int m_animation_angle;
@@ -195,6 +201,15 @@ WebFrame::WebFrame() : wxFrame(NULL, wxID_ANY, "wxWebView Sample")
     wxMenuItem* clearhist =  m_tools_menu->Append(wxID_ANY, _("Clear History"));
     m_tools_enable_history = m_tools_menu->AppendCheckItem(wxID_ANY, _("Enable History"));
 
+    //Create an editing menu
+    wxMenu* editmenu = new wxMenu();
+    m_edit_cut = editmenu->Append(wxID_ANY, _("Cut"));
+    m_edit_copy = editmenu->Append(wxID_ANY, _("Copy"));
+    m_edit_paste = editmenu->Append(wxID_ANY, _("Paste"));
+
+    m_tools_menu->AppendSeparator();
+    m_tools_menu->AppendSubMenu(editmenu, "Edit");
+
     //By default we want to handle navigation and new windows
     m_tools_handle_navigation->Check();
     m_tools_handle_new_window->Check();
@@ -247,6 +262,12 @@ WebFrame::WebFrame() : wxFrame(NULL, wxID_ANY, "wxWebView Sample")
             wxCommandEventHandler(WebFrame::OnClearHistory),  NULL, this );
     Connect(m_tools_enable_history->GetId(), wxEVT_COMMAND_MENU_SELECTED,
             wxCommandEventHandler(WebFrame::OnEnableHistory),  NULL, this );
+    Connect(m_edit_cut->GetId(), wxEVT_COMMAND_MENU_SELECTED,
+            wxCommandEventHandler(WebFrame::OnCut),  NULL, this );
+    Connect(m_edit_copy->GetId(), wxEVT_COMMAND_MENU_SELECTED,
+            wxCommandEventHandler(WebFrame::OnCopy),  NULL, this );
+    Connect(m_edit_paste->GetId(), wxEVT_COMMAND_MENU_SELECTED,
+            wxCommandEventHandler(WebFrame::OnPaste),  NULL, this );
 }
 
 void WebFrame::OnAnimationTimer(wxTimerEvent& evt)
@@ -371,6 +392,21 @@ void WebFrame::OnEnableHistory(wxCommandEvent& evt)
     UpdateState();
 }
 
+void WebFrame::OnCut(wxCommandEvent& evt)
+{
+    m_browser->Cut();
+}
+
+void WebFrame::OnCopy(wxCommandEvent& evt)
+{
+    m_browser->Copy();
+}
+
+void WebFrame::OnPaste(wxCommandEvent& evt)
+{
+    m_browser->Paste();
+}
+
 /**
   * Callback invoked when there is a request to load a new page (for instance
   * when the user clicks a link)
@@ -470,6 +506,10 @@ void WebFrame::OnToolsClicked(wxCommandEvent& evt)
         break;
     }
 
+    m_edit_cut->Enable(m_browser->CanCut());
+    m_edit_copy->Enable(m_browser->CanCopy());
+    m_edit_paste->Enable(m_browser->CanPaste());
+    
     wxPoint position = ScreenToClient( wxGetMousePosition() );
     PopupMenu(m_tools_menu, position.x, position.y);
 }

src/msw/webview_ie.cpp

@@ -510,6 +510,60 @@ wxString wxWebViewIE::GetCurrentTitle()
     return out.GetString();
 }
 
+bool wxWebViewIE::CanCut()
+{
+    return CanExecCommand("Cut");
+}
+
+bool wxWebViewIE::CanCopy()
+{
+    return CanExecCommand("Copy");
+}
+bool wxWebViewIE::CanPaste()
+{
+    return CanExecCommand("Paste");
+}
+
+void wxWebViewIE::Cut()
+{
+    ExecCommand("Cut");
+}
+
+void wxWebViewIE::Copy()
+{
+    ExecCommand("Copy");
+}
+
+void wxWebViewIE::Paste()
+{
+    ExecCommand("Paste");
+}
+
+bool wxWebViewIE::CanExecCommand(wxString command)
+{
+    wxVariant documentVariant = m_ie.GetProperty("Document");
+    void* documentPtr = documentVariant.GetVoidPtr();
+    IHTMLDocument2* document = (IHTMLDocument2*)documentPtr;
+
+    wxASSERT(documentPtr && document);
+
+    VARIANT_BOOL enabled;
+    document->queryCommandEnabled(SysAllocString(command.wc_str()), &enabled);
+
+    return (enabled == VARIANT_TRUE);
+}
+
+void wxWebViewIE::ExecCommand(wxString command)
+{
+    wxVariant documentVariant = m_ie.GetProperty("Document");
+    void* documentPtr = documentVariant.GetVoidPtr();
+    IHTMLDocument2* document = (IHTMLDocument2*)documentPtr;
+
+    wxASSERT(documentPtr && document);
+
+    document->execCommand(SysAllocString(command.wc_str()), VARIANT_FALSE, VARIANT(), NULL);
+}
+
 void wxWebViewIE::onActiveXEvent(wxActiveXEvent& evt)
 {
     if (m_webBrowser == NULL) return;