webkitwebview.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

{
    return FALSE;
}

static WebKitNavigationResponse webkit_web_view_real_navigation_requested(WebKitWebView*, WebKitWebFrame*, WebKitNetworkRequest*)
{
    return WEBKIT_NAVIGATION_RESPONSE_ACCEPT;
}

static void webkit_web_view_real_window_object_cleared(WebKitWebView*, WebKitWebFrame*, JSGlobalContextRef context, JSObjectRef window_object)
{
    notImplemented();
}

static gchar* webkit_web_view_real_choose_file(WebKitWebView*, WebKitWebFrame*, const gchar* old_name)
{
    notImplemented();
    return g_strdup(old_name);
}

typedef enum {
    WEBKIT_SCRIPT_DIALOG_ALERT,
    WEBKIT_SCRIPT_DIALOG_CONFIRM,
    WEBKIT_SCRIPT_DIALOG_PROMPT
 } WebKitScriptDialogType;

static gboolean webkit_web_view_script_dialog(WebKitWebView* webView, WebKitWebFrame* frame, const gchar* message, WebKitScriptDialogType type, const gchar* defaultValue, gchar** value)
{
    GtkMessageType messageType;
    GtkButtonsType buttons;
    gint defaultResponse;
    GtkWidget* window;
    GtkWidget* dialog;
    GtkWidget* entry = 0;
    gboolean didConfirm = FALSE;

    switch (type) {
    case WEBKIT_SCRIPT_DIALOG_ALERT:
        messageType = GTK_MESSAGE_WARNING;
        buttons = GTK_BUTTONS_CLOSE;
        defaultResponse = GTK_RESPONSE_CLOSE;
        break;
    case WEBKIT_SCRIPT_DIALOG_CONFIRM:
        messageType = GTK_MESSAGE_QUESTION;
        buttons = GTK_BUTTONS_YES_NO;
        defaultResponse = GTK_RESPONSE_YES;
        break;
    case WEBKIT_SCRIPT_DIALOG_PROMPT:
        messageType = GTK_MESSAGE_QUESTION;
        buttons = GTK_BUTTONS_OK_CANCEL;
        defaultResponse = GTK_RESPONSE_OK;
        break;
    default:
        g_warning("Unknown value for WebKitScriptDialogType.");
        return FALSE;
    }

    window = gtk_widget_get_toplevel(GTK_WIDGET(webView));
    dialog = gtk_message_dialog_new(GTK_WIDGET_TOPLEVEL(window) ? GTK_WINDOW(window) : 0, GTK_DIALOG_DESTROY_WITH_PARENT, messageType, buttons, "%s", message);
    gchar* title = g_strconcat("JavaScript - ", webkit_web_frame_get_uri(frame), NULL);
    gtk_window_set_title(GTK_WINDOW(dialog), title);
    g_free(title);

    if (type == WEBKIT_SCRIPT_DIALOG_PROMPT) {
        entry = gtk_entry_new();
        gtk_entry_set_text(GTK_ENTRY(entry), defaultValue);
        gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), entry);
        gtk_entry_set_activates_default(GTK_ENTRY(entry), TRUE);
        gtk_widget_show(entry);
    }

    gtk_dialog_set_default_response(GTK_DIALOG(dialog), defaultResponse);
    gint response = gtk_dialog_run(GTK_DIALOG(dialog));

    switch (response) {
    case GTK_RESPONSE_YES:
        didConfirm = TRUE;
        break;
    case GTK_RESPONSE_OK:
        didConfirm = TRUE;
        if (entry)
            *value = g_strdup(gtk_entry_get_text(GTK_ENTRY(entry)));
        else
            *value = 0;
        break;
    case GTK_RESPONSE_NO:
    case GTK_RESPONSE_CANCEL:
        didConfirm = FALSE;
        break;

    }
    gtk_widget_destroy(GTK_WIDGET(dialog));
    return didConfirm;
}

static gboolean webkit_web_view_real_script_alert(WebKitWebView* webView, WebKitWebFrame* frame, const gchar* message)
{
    webkit_web_view_script_dialog(webView, frame, message, WEBKIT_SCRIPT_DIALOG_ALERT, 0, 0);
    return TRUE;
}

static gboolean webkit_web_view_real_script_confirm(WebKitWebView* webView, WebKitWebFrame* frame, const gchar* message, gboolean* didConfirm)
{
    *didConfirm = webkit_web_view_script_dialog(webView, frame, message, WEBKIT_SCRIPT_DIALOG_CONFIRM, 0, 0);
    return TRUE;
}

static gboolean webkit_web_view_real_script_prompt(WebKitWebView* webView, WebKitWebFrame* frame, const gchar* message, const gchar* defaultValue, gchar** value)
{
    if (!webkit_web_view_script_dialog(webView, frame, message, WEBKIT_SCRIPT_DIALOG_PROMPT, defaultValue, value))
        *value = NULL;
    return TRUE;
}

static gboolean webkit_web_view_real_console_message(WebKitWebView* webView, const gchar* message, unsigned int line, const gchar* sourceId)
{
    g_print("console message: %s @%d: %s\n", sourceId, line, message);
    return TRUE;
}

static void webkit_web_view_real_select_all(WebKitWebView* webView)
{
    Frame* frame = core(webView)->focusController()->focusedOrMainFrame();
    frame->editor()->command("SelectAll").execute();
}

static void webkit_web_view_real_cut_clipboard(WebKitWebView* webView)
{
    Frame* frame = core(webView)->focusController()->focusedOrMainFrame();
    frame->editor()->command("Cut").execute();
}

static void webkit_web_view_real_copy_clipboard(WebKitWebView* webView)
{
    Frame* frame = core(webView)->focusController()->focusedOrMainFrame();
    frame->editor()->command("Copy").execute();
}

static void webkit_web_view_real_paste_clipboard(WebKitWebView* webView)
{
    Frame* frame = core(webView)->focusController()->focusedOrMainFrame();
    frame->editor()->command("Paste").execute();
}

static void webkit_web_view_dispose(GObject* object)
{
    WebKitWebView* webView = WEBKIT_WEB_VIEW(object);
    WebKitWebViewPrivate* priv = webView->priv;

    priv->disposing = TRUE;

    if (priv->corePage) {
        webkit_web_view_stop_loading(WEBKIT_WEB_VIEW(object));

        core(priv->mainFrame)->loader()->detachChildren();
        delete priv->corePage;
        priv->corePage = NULL;
    }

    if (priv->horizontalAdjustment) {
        g_object_unref(priv->horizontalAdjustment);
        priv->horizontalAdjustment = NULL;
    }

    if (priv->verticalAdjustment) {
        g_object_unref(priv->verticalAdjustment);
        priv->verticalAdjustment = NULL;
    }

    if (priv->backForwardList) {
        g_object_unref(priv->backForwardList);
        priv->backForwardList = NULL;

        g_signal_handlers_disconnect_by_func(priv->webSettings, (gpointer)webkit_web_view_settings_notify, webView);
        g_object_unref(priv->webSettings);
        priv->webSettings = NULL;

        g_object_unref(priv->webInspector);
        priv->webInspector = NULL;

        g_object_unref(priv->webWindowFeatures);
        priv->webWindowFeatures = NULL;

        g_object_unref(priv->imContext);
        priv->imContext = NULL;

        gtk_target_list_unref(priv->copy_target_list);
        priv->copy_target_list = NULL;

        gtk_target_list_unref(priv->paste_target_list);
        priv->paste_target_list = NULL;

        delete priv->userAgent;
        priv->userAgent = NULL;
    }

    G_OBJECT_CLASS(webkit_web_view_parent_class)->dispose(object);
}

static void webkit_web_view_finalize(GObject* object)
{
    WebKitWebView* webView = WEBKIT_WEB_VIEW(object);
    WebKitWebViewPrivate* priv = webView->priv;

    g_free(priv->encoding);
    g_free(priv->customEncoding);

    G_OBJECT_CLASS(webkit_web_view_parent_class)->finalize(object);
}

static gboolean webkit_create_web_view_request_handled(GSignalInvocationHint* ihint, GValue* returnAccu, const GValue* handlerReturn, gpointer dummy)
{
    gpointer newWebView = g_value_get_object(handlerReturn);
    g_value_set_object(returnAccu, newWebView);

    // Continue if we don't have a newWebView
    return !newWebView;
}

static gboolean webkit_navigation_request_handled(GSignalInvocationHint* ihint, GValue* returnAccu, const GValue* handlerReturn, gpointer dummy)
{
    WebKitNavigationResponse navigationResponse = (WebKitNavigationResponse)g_value_get_enum(handlerReturn);
    g_value_set_enum(returnAccu, navigationResponse);

    if (navigationResponse != WEBKIT_NAVIGATION_RESPONSE_ACCEPT)
        return FALSE;

    return TRUE;
}

static AtkObject* webkit_web_view_get_accessible(GtkWidget* widget)
{
    WebKitWebView* webView = WEBKIT_WEB_VIEW(widget);
    if (!core(webView))
        return NULL;

    AXObjectCache::enableAccessibility();

    Frame* coreFrame = core(webView)->mainFrame();
    if (!coreFrame)
        return NULL;

    Document* doc = coreFrame->document();
    if (!doc)
        return NULL;

    AccessibilityObject* coreAccessible = doc->axObjectCache()->get(doc->renderer());
    if (!coreAccessible || !coreAccessible->wrapper())
        return NULL;

    return coreAccessible->wrapper();
}

static void webkit_web_view_class_init(WebKitWebViewClass* webViewClass)
{
    GtkBindingSet* binding_set;

    webkit_init();

    /*
     * Signals
     */

    /**
     * WebKitWebView::create-web-view:
     * @web_view: the object on which the signal is emitted
     * @frame: the #WebKitWebFrame
     * @return: a newly allocated #WebKitWebView or %NULL
     *
     * Emitted when the creation of a new window is requested.
     * If this signal is handled the signal handler should return the
     * newly created #WebKitWebView.
     *
     * The new #WebKitWebView should not be displayed to the user
     * until the #WebKitWebView::web-view-ready signal is emitted.
     *
     * The signal handlers should not try to deal with the reference
     * count for the new #WebKitWebView. The widget to which the
     * widget is added will handle that.
     *
     * Since 1.0.3
     */
    webkit_web_view_signals[CREATE_WEB_VIEW] = g_signal_new("create-web-view",
            G_TYPE_FROM_CLASS(webViewClass),
            (GSignalFlags)(G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION),
            G_STRUCT_OFFSET (WebKitWebViewClass, create_web_view),
            webkit_create_web_view_request_handled,
            NULL,
            webkit_marshal_OBJECT__OBJECT,
            WEBKIT_TYPE_WEB_VIEW , 1,
            WEBKIT_TYPE_WEB_FRAME);

    /**
     * WebKitWebView::web-view-ready:
     * @web_view: the object on which the signal is emitted
     * @return: %TRUE to stop other handlers from being invoked for
     * the event, %FALSE to propagate the event further
     *
     * Emitted after #WebKitWebView::create-web-view when the new #WebKitWebView
     * should be displayed to the user. When this signal is emitted
     * all the information about how the window should look, including
     * size, position, whether the location, status and scroll bars
     * should be displayed, is already set on the
     * #WebKitWebWindowFeatures object contained by the #WebKitWebView.
     *
     * Notice that some of that information may change during the life
     * time of the window, so you may want to connect to the ::notify
     * signal of the #WebKitWebWindowFeatures object to handle those.
     *
     * Since 1.0.3
     */
    webkit_web_view_signals[WEB_VIEW_READY] = g_signal_new("web-view-ready",
            G_TYPE_FROM_CLASS(webViewClass),
            (GSignalFlags)(G_SIGNAL_RUN_LAST),
            G_STRUCT_OFFSET (WebKitWebViewClass, web_view_ready),
            g_signal_accumulator_true_handled,
            NULL,
            webkit_marshal_BOOLEAN__VOID,
            G_TYPE_BOOLEAN, 0);

    /**
     * WebKitWebView::navigation-requested:
     * @web_view: the object on which the signal is emitted
     * @frame: the #WebKitWebFrame that required the navigation
     * @request: a #WebKitNetworkRequest
     * @return: a WebKitNavigationResponse
     *
     * Emitted when @frame requests a navigation to another page.
     *
     * Deprecated: Use WebKitWebView::navigation-policy-decision-requested
     * instead
     */
    webkit_web_view_signals[NAVIGATION_REQUESTED] = g_signal_new("navigation-requested",
            G_TYPE_FROM_CLASS(webViewClass),
            (GSignalFlags)(G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION),
            G_STRUCT_OFFSET (WebKitWebViewClass, navigation_requested),
            webkit_navigation_request_handled,
            NULL,
            webkit_marshal_ENUM__OBJECT_OBJECT,
            WEBKIT_TYPE_NAVIGATION_RESPONSE, 2,
            WEBKIT_TYPE_WEB_FRAME,
            WEBKIT_TYPE_NETWORK_REQUEST);

    /**
     * WebKitWebView::navigation-policy-decision-requested: