a43e25c3d6
This allows this code to be compiled with WebKit2 2.6 included in Debian Jessie. Closes https://github.com/wxWidgets/wxWidgets/pull/519
431 lines
15 KiB
C++
431 lines
15 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/gtk/webview_webkit2_extension.cpp
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// Purpose: GTK WebKit2 extension for web view component
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// Author: Scott Talbert
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// Copyright: (c) 2017 Scott Talbert
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#include "wx/defs.h"
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#include "wx/gtk/private/webview_webkit2_extension.h"
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#include <webkit2/webkit-web-extension.h>
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#define WEBKIT_DOM_USE_UNSTABLE_API
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#include <webkitdom/WebKitDOMDOMSelection.h>
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#include <webkitdom/WebKitDOMDOMWindowUnstable.h>
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static const char introspection_xml[] =
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"<node>"
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" <interface name='org.wxwidgets.wxGTK.WebExtension'>"
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" <method name='ClearSelection'>"
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" <arg type='t' name='page_id' direction='in'/>"
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" </method>"
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" <method name='DeleteSelection'>"
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" <arg type='t' name='page_id' direction='in'/>"
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" </method>"
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" <method name='GetPageSource'>"
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" <arg type='t' name='page_id' direction='in'/>"
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" <arg type='s' name='source' direction='out'/>"
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" </method>"
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" <method name='GetPageText'>"
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" <arg type='t' name='page_id' direction='in'/>"
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" <arg type='s' name='text' direction='out'/>"
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" </method>"
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" <method name='GetSelectedSource'>"
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" <arg type='t' name='page_id' direction='in'/>"
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" <arg type='s' name='source' direction='out'/>"
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" </method>"
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" <method name='GetSelectedText'>"
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" <arg type='t' name='page_id' direction='in'/>"
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" <arg type='s' name='text' direction='out'/>"
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" </method>"
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" <method name='HasSelection'>"
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" <arg type='t' name='page_id' direction='in'/>"
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" <arg type='b' name='has_selection' direction='out'/>"
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" </method>"
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" </interface>"
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"</node>";
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class wxWebViewWebKitExtension;
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static gboolean
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wxgtk_webview_authorize_authenticated_peer_cb(GDBusAuthObserver *observer,
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GIOStream *stream,
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GCredentials *credentials,
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wxWebViewWebKitExtension *extension);
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static void
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wxgtk_webview_dbus_connection_created_cb(GObject *source_object,
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GAsyncResult *result,
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wxWebViewWebKitExtension *extension);
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static wxWebViewWebKitExtension *gs_extension = NULL;
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class wxWebViewWebKitExtension
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{
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public:
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wxWebViewWebKitExtension(WebKitWebExtension *webkit_extension, const char* server_address);
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void ClearSelection(GVariant *parameters, GDBusMethodInvocation *invocation);
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void DeleteSelection(GVariant *parameters, GDBusMethodInvocation *invocation);
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void GetPageSource(GVariant *parameters, GDBusMethodInvocation *invocation);
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void GetPageText(GVariant *parameters, GDBusMethodInvocation *invocation);
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void GetSelectedSource(GVariant *parameters, GDBusMethodInvocation *invocation);
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void GetSelectedText(GVariant *parameters, GDBusMethodInvocation *invocation);
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void HasSelection(GVariant *parameters, GDBusMethodInvocation *invocation);
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void SetDBusConnection(GDBusConnection *dbusConnection);
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private:
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WebKitWebPage* GetWebPageOrReturnError(GVariant *parameters, GDBusMethodInvocation *invocation);
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void ReturnDBusStringValue(GDBusMethodInvocation *invocation, gchar *value);
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GDBusConnection *m_dbusConnection;
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WebKitWebExtension *m_webkitExtension;
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};
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wxWebViewWebKitExtension::wxWebViewWebKitExtension(WebKitWebExtension *extension, const char* server_address)
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{
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m_webkitExtension = (WebKitWebExtension*)g_object_ref(extension);
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GDBusAuthObserver *observer = g_dbus_auth_observer_new();
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g_signal_connect(observer, "authorize-authenticated-peer",
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G_CALLBACK(wxgtk_webview_authorize_authenticated_peer_cb),
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this);
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g_dbus_connection_new_for_address(server_address,
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G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
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observer,
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NULL,
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(GAsyncReadyCallback)wxgtk_webview_dbus_connection_created_cb,
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this);
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g_object_unref(observer);
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}
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WebKitWebPage* wxWebViewWebKitExtension::GetWebPageOrReturnError(GVariant *parameters, GDBusMethodInvocation *invocation)
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{
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guint64 page_id;
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g_variant_get(parameters, "(t)", &page_id);
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WebKitWebPage *web_page = webkit_web_extension_get_page(m_webkitExtension,
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page_id);
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if (!web_page)
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{
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g_dbus_method_invocation_return_error(invocation, G_DBUS_ERROR,
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G_DBUS_ERROR_INVALID_ARGS,
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"Invalid page ID: %" G_GUINT64_FORMAT, page_id);
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}
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return web_page;
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}
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void wxWebViewWebKitExtension::GetSelectedSource(GVariant *parameters,
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GDBusMethodInvocation *invocation)
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{
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WebKitWebPage *web_page = GetWebPageOrReturnError(parameters, invocation);
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if (!web_page)
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{
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return;
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}
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WebKitDOMDocument *doc = webkit_web_page_get_dom_document(web_page);
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WebKitDOMDOMWindow *win = webkit_dom_document_get_default_view(doc);
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WebKitDOMDOMSelection *sel = webkit_dom_dom_window_get_selection(win);
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g_object_unref(win);
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if (!sel)
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{
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ReturnDBusStringValue(invocation, NULL);
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return;
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}
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WebKitDOMRange *range = webkit_dom_dom_selection_get_range_at(sel, 0, NULL);
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if (!range)
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{
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ReturnDBusStringValue(invocation, NULL);
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return;
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}
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WebKitDOMElement *div = webkit_dom_document_create_element(doc, "div",
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NULL);
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WebKitDOMDocumentFragment *clone = webkit_dom_range_clone_contents(range,
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NULL);
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webkit_dom_node_append_child(&div->parent_instance,
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&clone->parent_instance, NULL);
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WebKitDOMElement *html = (WebKitDOMElement*)div;
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#if WEBKIT_CHECK_VERSION(2, 8, 0)
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gchar *text = webkit_dom_element_get_inner_html(html);
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#else
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gchar *text = webkit_dom_html_element_get_inner_html(WEBKIT_DOM_HTML_ELEMENT(html));
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#endif
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g_object_unref(range);
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ReturnDBusStringValue(invocation, text);
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}
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void wxWebViewWebKitExtension::GetPageSource(GVariant *parameters,
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GDBusMethodInvocation *invocation)
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{
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WebKitWebPage *web_page = GetWebPageOrReturnError(parameters, invocation);
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if (!web_page)
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{
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return;
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}
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WebKitDOMDocument *doc = webkit_web_page_get_dom_document(web_page);
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WebKitDOMElement *body = webkit_dom_document_get_document_element(doc);
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#if WEBKIT_CHECK_VERSION(2, 8, 0)
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gchar *source = webkit_dom_element_get_outer_html(body);
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#else
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gchar *source =
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webkit_dom_html_element_get_outer_html(WEBKIT_DOM_HTML_ELEMENT(body));
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#endif
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g_dbus_method_invocation_return_value(invocation,
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g_variant_new("(s)", source ? source : ""));
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}
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void wxWebViewWebKitExtension::GetPageText(GVariant *parameters,
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GDBusMethodInvocation *invocation)
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{
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WebKitWebPage *web_page = GetWebPageOrReturnError(parameters, invocation);
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if (!web_page)
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{
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return;
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}
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WebKitDOMDocument *doc = webkit_web_page_get_dom_document(web_page);
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WebKitDOMHTMLElement *body = webkit_dom_document_get_body(doc);
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gchar *text = webkit_dom_html_element_get_inner_text(body);
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g_dbus_method_invocation_return_value(invocation,
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g_variant_new("(s)", text));
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}
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void wxWebViewWebKitExtension::GetSelectedText(GVariant *parameters,
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GDBusMethodInvocation *invocation)
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{
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WebKitWebPage *web_page = GetWebPageOrReturnError(parameters, invocation);
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if (!web_page)
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{
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return;
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}
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WebKitDOMDocument *doc = webkit_web_page_get_dom_document(web_page);
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WebKitDOMDOMWindow *win = webkit_dom_document_get_default_view(doc);
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WebKitDOMDOMSelection *sel = webkit_dom_dom_window_get_selection(win);
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g_object_unref(win);
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if (!sel)
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{
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ReturnDBusStringValue(invocation, NULL);
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return;
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}
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WebKitDOMRange *range = webkit_dom_dom_selection_get_range_at(sel, 0, NULL);
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if (!range)
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{
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ReturnDBusStringValue(invocation, NULL);
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return;
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}
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gchar *text = webkit_dom_range_get_text(range);
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g_object_unref(range);
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ReturnDBusStringValue(invocation, text);
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}
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void wxWebViewWebKitExtension::ClearSelection(GVariant *parameters,
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GDBusMethodInvocation *invocation)
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{
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WebKitWebPage *web_page = GetWebPageOrReturnError(parameters, invocation);
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if (!web_page)
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{
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return;
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}
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WebKitDOMDocument *doc = webkit_web_page_get_dom_document(web_page);
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WebKitDOMDOMWindow *win = webkit_dom_document_get_default_view(doc);
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WebKitDOMDOMSelection *sel = webkit_dom_dom_window_get_selection(win);
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g_object_unref(win);
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if (sel)
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{
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webkit_dom_dom_selection_remove_all_ranges(sel);
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}
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g_dbus_method_invocation_return_value(invocation, NULL);
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}
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void wxWebViewWebKitExtension::HasSelection(GVariant *parameters,
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GDBusMethodInvocation *invocation)
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{
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WebKitWebPage *web_page = GetWebPageOrReturnError(parameters, invocation);
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if (!web_page)
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{
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return;
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}
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WebKitDOMDocument *doc = webkit_web_page_get_dom_document(web_page);
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WebKitDOMDOMWindow *win = webkit_dom_document_get_default_view(doc);
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WebKitDOMDOMSelection *sel = webkit_dom_dom_window_get_selection(win);
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g_object_unref(win);
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gboolean has_selection = FALSE;
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if (WEBKIT_DOM_IS_DOM_SELECTION(sel))
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{
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if (!webkit_dom_dom_selection_get_is_collapsed(sel))
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{
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has_selection = TRUE;
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}
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}
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g_dbus_method_invocation_return_value(invocation,
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g_variant_new("(b)", has_selection));
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}
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void wxWebViewWebKitExtension::DeleteSelection(GVariant *parameters,
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GDBusMethodInvocation *invocation)
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{
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WebKitWebPage *web_page = GetWebPageOrReturnError(parameters, invocation);
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if (!web_page)
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{
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return;
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}
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WebKitDOMDocument *doc = webkit_web_page_get_dom_document(web_page);
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WebKitDOMDOMWindow *win = webkit_dom_document_get_default_view(doc);
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WebKitDOMDOMSelection *sel = webkit_dom_dom_window_get_selection(win);
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g_object_unref(win);
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if (sel)
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{
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webkit_dom_dom_selection_delete_from_document(sel);
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}
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g_dbus_method_invocation_return_value(invocation, NULL);
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}
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void wxWebViewWebKitExtension::ReturnDBusStringValue(GDBusMethodInvocation *invocation, gchar *value)
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{
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g_dbus_method_invocation_return_value(invocation,
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g_variant_new("(s)", value ? value : ""));
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}
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void wxWebViewWebKitExtension::SetDBusConnection(GDBusConnection *dbusConnection)
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{
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m_dbusConnection = dbusConnection;
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}
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static void
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wxgtk_webview_handle_method_call(GDBusConnection *connection,
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const char *sender,
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const char *object_path,
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const char *interface_name,
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const char *method_name,
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GVariant *parameters,
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GDBusMethodInvocation *invocation,
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gpointer user_data)
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{
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if (g_strcmp0(interface_name, WXGTK_WEB_EXTENSION_INTERFACE) != 0)
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{
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return;
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}
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wxWebViewWebKitExtension *extension = (wxWebViewWebKitExtension*)user_data;
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if (g_strcmp0(method_name, "ClearSelection") == 0)
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{
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extension->ClearSelection(parameters, invocation);
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}
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else if (g_strcmp0(method_name, "DeleteSelection") == 0)
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{
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extension->DeleteSelection(parameters, invocation);
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}
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else if (g_strcmp0(method_name, "GetPageSource") == 0)
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{
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extension->GetPageSource(parameters, invocation);
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}
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else if (g_strcmp0(method_name, "GetPageText") == 0)
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{
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extension->GetPageText(parameters, invocation);
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}
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else if (g_strcmp0(method_name, "GetSelectedSource") == 0)
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{
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extension->GetSelectedSource(parameters, invocation);
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}
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else if (g_strcmp0(method_name, "GetSelectedText") == 0)
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{
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extension->GetSelectedText(parameters, invocation);
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}
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else if (g_strcmp0(method_name, "HasSelection") == 0)
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{
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extension->HasSelection(parameters, invocation);
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}
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}
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static const GDBusInterfaceVTable interface_vtable = {
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wxgtk_webview_handle_method_call,
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NULL,
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NULL
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};
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gboolean
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wxgtk_webview_dbus_peer_is_authorized(GCredentials *peer_credentials)
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{
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static GCredentials *own_credentials = g_credentials_new();
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GError *error = NULL;
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if (peer_credentials && g_credentials_is_same_user(peer_credentials, own_credentials, &error))
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{
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return TRUE;
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}
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if (error)
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{
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g_warning("Failed to authorize web extension connection: %s", error->message);
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g_error_free(error);
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}
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return FALSE;
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}
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static gboolean
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wxgtk_webview_authorize_authenticated_peer_cb(GDBusAuthObserver *observer,
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GIOStream *stream,
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GCredentials *credentials,
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wxWebViewWebKitExtension *extension)
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{
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return wxgtk_webview_dbus_peer_is_authorized(credentials);
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}
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static void
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wxgtk_webview_dbus_connection_created_cb(GObject *source_object,
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GAsyncResult *result,
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wxWebViewWebKitExtension *extension)
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{
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static GDBusNodeInfo *introspection_data =
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g_dbus_node_info_new_for_xml(introspection_xml, NULL);
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GError *error = NULL;
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GDBusConnection *connection =
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g_dbus_connection_new_for_address_finish(result, &error);
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if (error)
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{
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g_warning("Failed to connect to UI process: %s", error->message);
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g_error_free(error);
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return;
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}
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guint registration_id =
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g_dbus_connection_register_object(connection,
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WXGTK_WEB_EXTENSION_OBJECT_PATH,
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introspection_data->interfaces[0],
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&interface_vtable,
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extension,
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NULL,
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&error);
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if (!registration_id)
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{
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g_warning ("Failed to register web extension object: %s\n", error->message);
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g_error_free (error);
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g_object_unref (connection);
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return;
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}
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extension->SetDBusConnection(connection);
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}
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extern "C" WXEXPORT void
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webkit_web_extension_initialize_with_user_data (WebKitWebExtension *webkit_extension,
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GVariant *user_data)
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{
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const char *server_address;
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g_variant_get (user_data, "(&s)", &server_address);
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gs_extension = new wxWebViewWebKitExtension(webkit_extension,
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server_address);
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}
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