Use wxAlphaPixelData if the source bitmap depth is 32 or if on wxGTK and there is...

[wxWidgets.git] / include / wx / webview.h

diff --git a/include/wx/webview.h b/include/wx/webview.h
index 365e7664e4ac0575550445d516054a3b7444808b..a58fd87f979aec202adba6d8c843f199f892363c 100644 (file)
--- a/include/wx/webview.h
+++ b/include/wx/webview.h
@@ -3,24 +3,30 @@
 // Purpose:     Common interface and events for web view component
 // Author:      Marianne Gagnon
 // Id:          $Id$
 // Purpose:     Common interface and events for web view component
 // Author:      Marianne Gagnon
 // Id:          $Id$

-// Copyright:   (c) 2010 Marianne Gagnon
+// Copyright:   (c) 2010 Marianne Gagnon, 2011 Steven Lamerton

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_WEB_VIEW_H_
 #define _WX_WEB_VIEW_H_
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_WEB_VIEW_H_
 #define _WX_WEB_VIEW_H_
 

-#include "wx/defs.h"
+#include "wx/setup.h"

 
 

-#if wxUSE_WEB
+#if wxUSE_WEBVIEW

 
 

-#include <wx/control.h>
-#include <wx/event.h>
-#include <wx/sstream.h>
+#include "wx/control.h"
+#include "wx/event.h"
+#include "wx/sstream.h"
+#include "wx/sharedptr.h"
+#include "wx/vector.h"
+
+#include "wx/osx/webviewhistoryitem_webkit.h"
+#include "wx/gtk/webviewhistoryitem_webkit.h"
+#include "wx/msw/webviewhistoryitem_ie.h"
+
+class wxFSFile;
+class wxFileSystem;

 
 

-/**
- * Zoom level in web view component
- */

 enum wxWebViewZoom
 {
     wxWEB_VIEW_ZOOM_TINY,
 enum wxWebViewZoom
 {
     wxWEB_VIEW_ZOOM_TINY,


@@ -30,79 +36,58 @@ enum wxWebViewZoom
     wxWEB_VIEW_ZOOM_LARGEST
 };
 
     wxWEB_VIEW_ZOOM_LARGEST
 };
 

-/**
- * The type of zooming that the web view control can perform
- */

 enum wxWebViewZoomType
 {
 enum wxWebViewZoomType
 {

-    /** The entire layout scales when zooming, including images */
+    //Scales entire page, including images

     wxWEB_VIEW_ZOOM_TYPE_LAYOUT,
     wxWEB_VIEW_ZOOM_TYPE_LAYOUT,

-    /** Only the text changes in size when zooming, images and other layout
-      * elements retain their initial size */

     wxWEB_VIEW_ZOOM_TYPE_TEXT
 };
 
     wxWEB_VIEW_ZOOM_TYPE_TEXT
 };
 

-/** Types of errors that can cause navigation to fail */
-enum wxWebNavigationError
+enum wxWebViewNavigationError

 {
 {

-    /** Connection error (timeout, etc.) */

     wxWEB_NAV_ERR_CONNECTION,
     wxWEB_NAV_ERR_CONNECTION,

-    /** Invalid certificate */

     wxWEB_NAV_ERR_CERTIFICATE,
     wxWEB_NAV_ERR_CERTIFICATE,

-    /** Authentication required */

     wxWEB_NAV_ERR_AUTH,
     wxWEB_NAV_ERR_AUTH,

-    /** Other security error */

     wxWEB_NAV_ERR_SECURITY,
     wxWEB_NAV_ERR_SECURITY,

-    /** Requested resource not found */

     wxWEB_NAV_ERR_NOT_FOUND,
     wxWEB_NAV_ERR_NOT_FOUND,

-    /** Invalid request/parameters (e.g. bad URL, bad protocol,
-      * unsupported resource type) */

     wxWEB_NAV_ERR_REQUEST,
     wxWEB_NAV_ERR_REQUEST,

-    /** The user cancelled (e.g. in a dialog) */

     wxWEB_NAV_ERR_USER_CANCELLED,
     wxWEB_NAV_ERR_USER_CANCELLED,

-    /** Another (exotic) type of error that didn't fit in other categories*/

     wxWEB_NAV_ERR_OTHER
 };
 
     wxWEB_NAV_ERR_OTHER
 };
 

-/** Type of refresh */

 enum wxWebViewReloadFlags
 {
 enum wxWebViewReloadFlags
 {

-    /** Default reload, will access cache */
+    //Default, may access cache

     wxWEB_VIEW_RELOAD_DEFAULT,
     wxWEB_VIEW_RELOAD_DEFAULT,

-    /** Reload the current view without accessing the cache */

     wxWEB_VIEW_RELOAD_NO_CACHE 
 };
 
     wxWEB_VIEW_RELOAD_NO_CACHE 
 };
 

-
-/**
- * List of available backends for wxWebView
- */

 enum wxWebViewBackend
 {
 enum wxWebViewBackend
 {

-    /** Value that may be passed to wxWebView to let it pick an appropriate
-     * engine for the current platform*/

     wxWEB_VIEW_BACKEND_DEFAULT,
     wxWEB_VIEW_BACKEND_DEFAULT,

-
-    /** The OSX-native WebKit web engine */
-    wxWEB_VIEW_BACKEND_OSX_WEBKIT,
-
-    /** The GTK port of the WebKit engine */
-    wxWEB_VIEW_BACKEND_GTK_WEBKIT,
-
-    /** Use Microsoft Internet Explorer as web engine */
+    wxWEB_VIEW_BACKEND_WEBKIT,

     wxWEB_VIEW_BACKEND_IE
 };
 
     wxWEB_VIEW_BACKEND_IE
 };
 

-extern WXDLLIMPEXP_DATA_WEB(const char) wxWebViewNameStr[];
-extern WXDLLIMPEXP_DATA_WEB(const char) wxWebViewDefaultURLStr[];
+//Base class for custom scheme handlers
+class WXDLLIMPEXP_WEBVIEW wxWebViewHandler
+{
+public:
+    wxWebViewHandler(const wxString& scheme) : m_scheme(scheme) {}
+    virtual ~wxWebViewHandler() {}
+    virtual wxString GetName() const { return m_scheme; }
+    virtual wxFSFile* GetFile(const wxString &uri) = 0;
+private:
+    wxString m_scheme;
+};
+
+extern WXDLLIMPEXP_DATA_WEBVIEW(const char) wxWebViewNameStr[];
+extern WXDLLIMPEXP_DATA_WEBVIEW(const char) wxWebViewDefaultURLStr[];

 
 

-class WXDLLIMPEXP_WEB wxWebView : public wxControl
+class WXDLLIMPEXP_WEBVIEW wxWebView : public wxControl

 {
 public:
 
 {
 public:
 

-    /**
-     *  Creation function for two-step creation.
-     */

     virtual bool Create(wxWindow* parent,
            wxWindowID id,
            const wxString& url,
     virtual bool Create(wxWindow* parent,
            wxWindowID id,
            const wxString& url,


@@ -111,29 +96,7 @@ public:
            long style,
            const wxString& name) = 0;
 
            long style,
            const wxString& name) = 0;
 

-    /**
-     * Factory function to create a new wxWebView for two-step creation
-     * (you need to call wxWebView::Create on the returned object)
-     * @param backend which web engine to use as backend for wxWebView
-     * @return the created wxWebView, or NULL if the requested backend is
-     *         not available
-     */

     static wxWebView* New(wxWebViewBackend backend = wxWEB_VIEW_BACKEND_DEFAULT);
     static wxWebView* New(wxWebViewBackend backend = wxWEB_VIEW_BACKEND_DEFAULT);

-
-    // TODO: clarify what styles can do, or remove this flag
-    /**
-     * Factory function to create a new wxWebView
-     * @param parent parent window to create this view in
-     * @param id ID of this control
-     * @param url URL to load by default in the web view
-     * @param pos position to create this control at
-     *            (you may use wxDefaultPosition if you use sizers)
-     * @param size size to create this control with
-     *             (you may use wxDefaultSize if you use sizers)
-     * @param backend which web engine to use as backend for wxWebView
-     * @return the created wxWebView, or NULL if the requested backend
-     *         is not available
-     */

     static wxWebView* New(wxWindow* parent,
            wxWindowID id,
            const wxString& url = wxWebViewDefaultURLStr,
     static wxWebView* New(wxWindow* parent,
            wxWindowID id,
            const wxString& url = wxWebViewDefaultURLStr,


@@ -143,249 +106,130 @@ public:
            long style = 0,
            const wxString& name = wxWebViewNameStr);
 
            long style = 0,
            const wxString& name = wxWebViewNameStr);
 

-
-    /** Get whether it is possible to navigate back in the history of
-      * visited pages
-      */
-    virtual bool CanGoBack() = 0;
-
-    /** Get whether it is possible to navigate forward in the history of
-      * visited pages
-      */
-    virtual bool CanGoForward() = 0;
-
-    /** Navigate back in the history of visited pages.
-      * Only valid if CanGoBack() returned true.
-      */
-    virtual void GoBack() = 0;
-
-    /** Navigate forwardin the history of visited pages.
-      * Only valid if CanGoForward() returned true.
-      */
-    virtual void GoForward() = 0;
-
-    /**
-     * Load a HTMl document (web page) from a URL
-     * @param url the URL where the HTML document to display can be found
-     * @note web engines generally report errors asynchronously, so if you wish
-     *       to know whether loading the URL was successful, register to receive
-     *       navigation error events
-     */
-    virtual void LoadUrl(const wxString& url) = 0;
-
-    /**
-     * Stop the current page loading process, if any.
-     * May trigger an error event of type wxWEB_NAV_ERR_USER_CANCELLED.
-     * TODO: make wxWEB_NAV_ERR_USER_CANCELLED errors uniform across ports.
-     */
-    virtual void Stop() = 0;
-
-    /**
-     * Reload the currently displayed URL.
-     * @param flags A bit array that may optionnally contain reload options
-     */
-    virtual void Reload(wxWebViewReloadFlags flags = wxWEB_VIEW_RELOAD_DEFAULT) = 0;
-
-
-    /**
-     * Get the URL of the currently displayed document
-     */
-    virtual wxString GetCurrentURL() = 0;
-
-    /**
-     * Get the title of the current web page, or its URL/path if title is not
-     * available
-     */
-    virtual wxString GetCurrentTitle() = 0;
-
+    //General methods
+    virtual wxString GetCurrentTitle() const = 0;
+    virtual wxString GetCurrentURL() const = 0;

     // TODO: handle choosing a frame when calling GetPageSource()?
     // TODO: handle choosing a frame when calling GetPageSource()?

-    /**
-     * Get the HTML source code of the currently displayed document
-     * @return the HTML source code, or an empty string if no page is currently
-     *         shown
-     */
-    virtual wxString GetPageSource() = 0;
-
-   /**
-     * Get the zoom factor of the page
-     * @return How much the HTML document is zoomed (scaleed)
-     */
-    virtual wxWebViewZoom GetZoom() = 0;
-
-    /**
-     * Set the zoom factor of the page
-     * @param zoom How much to zoom (scale) the HTML document
-     */
-    virtual void SetZoom(wxWebViewZoom zoom) = 0;
-
-    /**
-     * Set how to interpret the zoom factor
-     * @param zoomType how the zoom factor should be interpreted by the
-     *                 HTML engine
-     * @note invoke    canSetZoomType() first, some HTML renderers may not
-     *                 support all zoom types
-     */
-    virtual void SetZoomType(wxWebViewZoomType zoomType) = 0;
-
-    /**
-     * Get how the zoom factor is currently interpreted
-     * @return how the zoom factor is currently interpreted by the HTML engine
-     */
-    virtual wxWebViewZoomType GetZoomType() const = 0;
-
-    /**
-     * Retrieve whether the current HTML engine supports a type of zoom
-     * @param type the type of zoom to test
-     * @return whether this type of zoom is supported by this HTML engine
-     *         (and thus can be set through setZoomType())
-     */
-    virtual bool CanSetZoomType(wxWebViewZoomType type) const = 0;
-
-    // TODO: allow 'SetPage' to find files (e.g. images) from a virtual file
-    // system if possible
-    /**
-     * Set the displayed page source to the contents of the given string
-     * @param html    the string that contains the HTML data to display
-     * @param baseUrl URL assigned to the HTML data, to be used to resolve
-     *                relative paths, for instance
-     */
+    virtual wxString GetPageSource() const = 0;
+    virtual wxString GetPageText() const = 0;
+    virtual bool IsBusy() const = 0;
+    virtual bool IsEditable() const = 0;
+    virtual void LoadURL(const wxString& url) = 0;
+    virtual void Print() = 0;
+    virtual void RegisterHandler(wxSharedPtr<wxWebViewHandler> handler) = 0;
+    virtual void Reload(wxWebViewReloadFlags flags = wxWEB_VIEW_RELOAD_DEFAULT) = 0;
+    virtual void RunScript(const wxString& javascript) = 0;
+    virtual void SetEditable(bool enable = true) = 0;

     virtual void SetPage(const wxString& html, const wxString& baseUrl) = 0;
     virtual void SetPage(const wxString& html, const wxString& baseUrl) = 0;

-
-    /**
-     * Set the displayed page source to the contents of the given stream
-     * @param html    the stream to read HTML data from
-     * @param baseUrl URL assigned to the HTML data, to be used to resolve
-     *                relative paths, for instance
-     */

     virtual void SetPage(wxInputStream& html, wxString baseUrl)
     {
         wxStringOutputStream stream;
         stream.Write(html);
         SetPage(stream.GetString(), baseUrl);
     }
     virtual void SetPage(wxInputStream& html, wxString baseUrl)
     {
         wxStringOutputStream stream;
         stream.Write(html);
         SetPage(stream.GetString(), baseUrl);
     }

+    virtual void Stop() = 0;

 
 

-    // TODO:
-    //     wxString GetSelection();                         // maybe?
-    //     void SetSelection(...);                          // maybe?
-
-    //     void MakeEditable(bool enable = true);           // maybe?
-    //     bool IsEditable();                               // maybe?
-
-    //     void EnableJavascript(bool enabled);             // maybe?
-    //     wxString RunScript(const wxString& javascript);  // maybe?
-
-    //     void SetScrollPos(int pos);                      // maybe?
-    //     int GetScrollPos();                              // maybe?
-
-    //     wxString GetStatusText();                        // maybe?
-    //     void SetStatusText(wxString text);               // maybe?
-    //     * status text changed event?
-    //     * title changed event?
-
-    //    virtual bool IsOfflineMode() = 0;                 // maybe?
-    //     virtual void SetOfflineMode(bool offline) = 0;   // maybe?
-
-    // TODO: offer API to control the opening of new frames
-    //       (through <a target="..."> as well as through javascript), OR
-    //       provide a behavior consistent across ports.
-    // - OSX : I receive an event for new frames opened with HTML target, and
-    //           currently block them all.
-    // - IE  : An event is recieved for new frames and they are currently 
-    //           blocked
-    // - GTK : All frame open requests are blocked. A slot exists that I could
-    //           connect to to be notified if ever needed
-
-    /**
-     * Opens a print dialog so that the user may print the currently
-     * displayed page.
-     */
-    virtual void Print() = 0;
+    //History
+    virtual bool CanGoBack() const = 0;
+    virtual bool CanGoForward() const = 0;
+    virtual void GoBack() = 0;
+    virtual void GoForward() = 0;
+    virtual void ClearHistory() = 0;
+    virtual void EnableHistory(bool enable = true) = 0;
+    virtual wxVector<wxSharedPtr<wxWebViewHistoryItem> > GetBackwardHistory() = 0;
+    virtual wxVector<wxSharedPtr<wxWebViewHistoryItem> > GetForwardHistory() = 0;
+    virtual void LoadHistoryItem(wxSharedPtr<wxWebViewHistoryItem> item) = 0;

 
 

-    /**
-     * Returns whether the web control is currently busy (e.g. loading a page)
-     */
-    virtual bool IsBusy() = 0;
+    //Zoom
+    virtual bool CanSetZoomType(wxWebViewZoomType type) const = 0;
+    virtual wxWebViewZoom GetZoom() const = 0;
+    virtual wxWebViewZoomType GetZoomType() const = 0;
+    virtual void SetZoom(wxWebViewZoom zoom) = 0;
+    virtual void SetZoomType(wxWebViewZoomType zoomType) = 0;
+
+    //Selection
+    virtual void SelectAll() = 0;
+    virtual bool HasSelection() const = 0;
+    virtual void DeleteSelection() = 0;
+    virtual wxString GetSelectedText() const = 0;
+    virtual wxString GetSelectedSource() const = 0;
+    virtual void ClearSelection() = 0;
+
+    //Clipboard functions
+    virtual bool CanCut() const = 0;
+    virtual bool CanCopy() const = 0;
+    virtual bool CanPaste() const = 0;
+    virtual void Cut() = 0;
+    virtual void Copy() = 0;
+    virtual void Paste() = 0;
+
+    //Undo / redo functionality
+    virtual bool CanUndo() const = 0;
+    virtual bool CanRedo() const = 0;
+    virtual void Undo() = 0;
+    virtual void Redo() = 0;
+
+    wxDECLARE_ABSTRACT_CLASS(wxWebView);

 };
 
 };
 

-class WXDLLIMPEXP_WEB wxWebNavigationEvent : public wxCommandEvent
+class WXDLLIMPEXP_WEBVIEW wxWebViewEvent : public wxNotifyEvent

 {
 public:
 {
 public:

-    wxWebNavigationEvent() {}
-    wxWebNavigationEvent(wxEventType type, int id, const wxString href,
-                         const wxString target, bool canVeto)
-        : wxCommandEvent(type, id)
-    {
-        m_href = href;
-        m_target = target;
-        m_vetoed = false;
-        m_canVeto = canVeto;
-    }
+    wxWebViewEvent() {}
+    wxWebViewEvent(wxEventType type, int id, const wxString url,
+                   const wxString target)
+        : wxNotifyEvent(type, id), m_url(url), m_target(target)
+    {}

 
 

-    /**
-     *  Get the URL being visited
-     */
-    const wxString& GetHref() const { return m_href; }

 
 

-    /**
-     * Get the target (frame or window) in which the URL that caused this event
-     * is viewed, or an empty string if not available.
-     */
+    const wxString& GetURL() const { return m_url; }

     const wxString& GetTarget() const { return m_target; }
 
     const wxString& GetTarget() const { return m_target; }
 

-    // default copy ctor, assignment operator and dtor are ok
-    virtual wxEvent* Clone() const { return new wxWebNavigationEvent(*this); }
-
-    /** Get whether this event may be vetoed (stopped/prevented). Only
-      *  meaningful for events fired before navigation takes place.
-      */
-    bool CanVeto() const { return m_canVeto; }
-
-    /** Whether this event was vetoed (stopped/prevented). Only meaningful for
-     *  events fired before navigation takes place.
-     */
-    bool IsVetoed() const { return m_vetoed; }
-
-    /** Veto (prevent/stop) this event. Only meaningful for events fired
-     *  before navigation takes place. Only valid if CanVeto() returned true.
-     */
-    void Veto() { wxASSERT(m_canVeto); m_vetoed = true; }
-
+    virtual wxEvent* Clone() const { return new wxWebViewEvent(*this); }

 private:
 private:

-    wxString m_href;
+    wxString m_url;

     wxString m_target;
     wxString m_target;

-    bool m_canVeto;
-    bool m_vetoed;

 
 

-    wxDECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxWebNavigationEvent);
+    wxDECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxWebViewEvent);

 };
 
 };
 

-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEB, wxEVT_COMMAND_WEB_VIEW_NAVIGATING, wxWebNavigationEvent );
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEB, wxEVT_COMMAND_WEB_VIEW_NAVIGATED, wxWebNavigationEvent );
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEB, wxEVT_COMMAND_WEB_VIEW_LOADED, wxWebNavigationEvent );
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEB, wxEVT_COMMAND_WEB_VIEW_ERROR, wxWebNavigationEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEBVIEW, wxEVT_COMMAND_WEB_VIEW_NAVIGATING, wxWebViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEBVIEW, wxEVT_COMMAND_WEB_VIEW_NAVIGATED, wxWebViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEBVIEW, wxEVT_COMMAND_WEB_VIEW_LOADED, wxWebViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEBVIEW, wxEVT_COMMAND_WEB_VIEW_ERROR, wxWebViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEBVIEW, wxEVT_COMMAND_WEB_VIEW_NEWWINDOW, wxWebViewEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_WEBVIEW, wxEVT_COMMAND_WEB_VIEW_TITLE_CHANGED, wxWebViewEvent );

 
 

-typedef void (wxEvtHandler::*wxWebNavigationEventFunction)
-             (wxWebNavigationEvent&);
+typedef void (wxEvtHandler::*wxWebViewEventFunction)
+             (wxWebViewEvent&);

 
 

-#define wxWebNavigationEventHandler(func) \
-    wxEVENT_HANDLER_CAST(wxWebNavigationEventFunction, func)
+#define wxWebViewEventHandler(func) \
+    wxEVENT_HANDLER_CAST(wxWebViewEventFunction, func)

 
 #define EVT_WEB_VIEW_NAVIGATING(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_NAVIGATING, id, \
 
 #define EVT_WEB_VIEW_NAVIGATING(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_NAVIGATING, id, \

-                     wxHtmlNavigatingEventHandler(fn))
+                     wxWebViewEventHandler(fn))

 
 #define EVT_WEB_VIEW_NAVIGATED(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_NAVIGATED, id, \
 
 #define EVT_WEB_VIEW_NAVIGATED(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_NAVIGATED, id, \

-                     wxHtmlNavigatingEventHandler(fn))
+                     wxWebViewEventHandler(fn))

 
 #define EVT_WEB_VIEW_LOADED(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_LOADED, id, \
 
 #define EVT_WEB_VIEW_LOADED(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_LOADED, id, \

-                     wxHtmlNavigatingEventHandler(fn))
+                     wxWebViewEventHandler(fn))

 
 #define EVT_WEB_VIEW_ERRROR(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_ERROR, id, \
 
 #define EVT_WEB_VIEW_ERRROR(id, fn) \
     wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_ERROR, id, \

-                     wxHtmlNavigatingEventHandler(fn))
+                     wxWebViewEventHandler(fn))
+
+#define EVT_WEB_VIEW_NEWWINDOW(id, fn) \
+    wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_NEWWINDOW, id, \
+                     wxWebViewEventHandler(fn))
+
+#define EVT_WEB_VIEW_TITLE_CHANGED(id, fn) \
+    wx__DECLARE_EVT1(wxEVT_COMMAND_WEB_VIEW_TITLE_CHANGED, id, \
+                     wxWebViewEventHandler(fn))

 
 

-#endif // wxUSE_WEB
+#endif // wxUSE_WEBVIEW

 
 #endif // _WX_WEB_VIEW_H_
 
 #endif // _WX_WEB_VIEW_H_