add CajaWidgetViewProvider docs

7 files changed, 337 insertions, 17 deletions

diff --git a/docs/reference/libcaja-extension/libcaja-extension-docs.xml b/docs/reference/libcaja-extension/libcaja-extension-docs.xml
index 777a846d..54a2476d 100644
--- a/docs/reference/libcaja-extension/libcaja-extension-docs.xml
+++ b/docs/reference/libcaja-extension/libcaja-extension-docs.xml
@@ -25,6 +25,7 @@
       <xi:include href="xml/caja-menu-provider.xml" />
       <xi:include href="xml/caja-menu.xml" />
       <xi:include href="xml/caja-menu-item.xml" />
+      <xi:include href="xml/caja-widget-view-provider.xml" />
       <xi:include href="xml/caja-property-page-provider.xml" />
       <xi:include href="xml/caja-property-page.xml" />
     </chapter>
diff --git a/docs/reference/libcaja-extension/libcaja-extension-sections.txt b/docs/reference/libcaja-extension/libcaja-extension-sections.txt
index 1e899c4c..c2633cad 100644
--- a/docs/reference/libcaja-extension/libcaja-extension-sections.txt
+++ b/docs/reference/libcaja-extension/libcaja-extension-sections.txt
@@ -186,3 +186,19 @@ caja_module_list_types
 caja_module_list_pyfiles
 </SECTION>
 
+<SECTION>
+<FILE>caja-widget-view-provider</FILE>
+CajaWidgetViewProvider
+CajaWidgetViewProviderIface
+caja_widget_view_provider_get_widget
+caja_widget_view_provider_add_file
+caja_widget_view_provider_set_uri
+caja_widget_view_provider_set_window
+caja_widget_view_provider_supports_uri
+<SUBSECTION Standard>
+CAJA_WIDGET_VIEW_PROVIDER
+CAJA_IS_WIDGET_VIEW_PROVIDER
+CAJA_TYPE_WIDGET_VIEW_PROVIDER
+caja_widget_view_provider_get_type
+CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE
+</SECTION>
diff --git a/libcaja-extension/caja-widget-view-provider.c b/libcaja-extension/caja-widget-view-provider.c
new file mode 100644
index 00000000..d678fb26
--- /dev/null
+++ b/libcaja-extension/caja-widget-view-provider.c
@@ -0,0 +1,153 @@
+/* vi: set sw=4 ts=4 wrap ai: */
+/*
+ * caja-widget-view-provider.c: This file is part of ____
+ *
+ * Copyright (C) 2019 yetist <yetist@yetipc>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * */
+
+#include <config.h>
+#include "caja-widget-view-provider.h"
+
+#include <glib-object.h>
+
+/**
+ * SECTION:caja-widget-view-provider
+ * @title: CajaWidgetViewProvider
+ * @short_description: Interface to provide widgets view.
+ * @include: libcaja-extension/caja-widget-view-provider.h
+ *
+ * #CajaWidgetViewProvider allows extension to provide widgets view
+ * in the file manager.
+ */
+
+static void
+caja_widget_view_provider_base_init (gpointer g_class)
+{
+}
+
+GType
+caja_widget_view_provider_get_type (void)
+{
+    static GType type = 0;
+
+    if (!type) {
+        const GTypeInfo info = {
+            sizeof (CajaWidgetViewProviderIface),
+            caja_widget_view_provider_base_init,
+            NULL,
+            NULL,
+            NULL,
+            NULL,
+            0,
+            0,
+            NULL
+        };
+
+        type = g_type_register_static (G_TYPE_INTERFACE,
+                                       "CajaWidgetViewProvider",
+                                       &info, 0);
+        g_type_interface_add_prerequisite (type, G_TYPE_OBJECT);
+    }
+
+    return type;
+}
+
+/**
+ * caja_widget_view_provider_get_widget:
+ * @provider: a #CajaWidgetViewProvider
+ *
+ *
+ * Returns:
+ **/
+GtkWidget *
+caja_widget_view_provider_get_widget (CajaWidgetViewProvider *provider)
+{
+    g_return_val_if_fail (CAJA_IS_WIDGET_VIEW_PROVIDER (provider), NULL);
+    g_return_val_if_fail (CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->get_widget != NULL, NULL);
+
+    return CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->get_widget (provider);
+}
+
+/**
+ * caja_widget_view_provider_add_file:
+ * @provider: a #CajaWidgetViewProvider
+ * @file: 
+ * @directory: 
+ *
+ *
+ **/
+void caja_widget_view_provider_add_file (CajaWidgetViewProvider *provider, CajaFile *file, CajaFile *directory)
+{
+    g_return_if_fail (CAJA_IS_WIDGET_VIEW_PROVIDER (provider));
+    g_return_if_fail (CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->add_file != NULL);
+
+    CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->add_file (provider, file, directory);
+}
+
+/**
+ * caja_widget_view_provider_set_location:
+ * @provider: a #CajaWidgetViewProvider
+ * @uri: the URI of the location
+ *
+ *
+ **/
+void caja_widget_view_provider_set_location (CajaWidgetViewProvider *provider, const char *location)
+{
+    g_return_if_fail (CAJA_IS_WIDGET_VIEW_PROVIDER (provider));
+    g_return_if_fail (CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->set_location != NULL);
+
+    CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->set_location (provider, location);
+}
+
+/**
+ * caja_widget_view_provider_set_window:
+ * @provider: a #CajaWidgetViewProvider
+ * @window: parent #GtkWindow
+ *
+ *
+ **/
+void caja_widget_view_provider_set_window (CajaWidgetViewProvider *provider, GtkWindow *window)
+{
+    g_return_if_fail (CAJA_IS_WIDGET_VIEW_PROVIDER (provider));
+    g_return_if_fail (CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->set_window != NULL);
+
+    CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->set_window (provider, window);
+}
+
+
+/**
+ * caja_widget_view_provider_supports_uri:
+ * @provider: a #CajaWidgetViewProvider
+ * @uri:
+ * @file_type:
+ * @mime_type:
+ *
+ *
+ *
+ * Return value:
+ **/
+gboolean caja_widget_view_provider_supports_uri (CajaWidgetViewProvider *provider,
+                                                 const char *uri,
+                                                 GFileType file_type,
+                                                 const char *mime_type)
+{
+    g_return_val_if_fail (CAJA_IS_WIDGET_VIEW_PROVIDER (provider), FALSE);
+    g_return_val_if_fail (CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->supports_uri!= NULL, FALSE);
+
+    return CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE (provider)->supports_uri (provider, uri, file_type, mime_type);
+}
diff --git a/libcaja-extension/caja-widget-view-provider.h b/libcaja-extension/caja-widget-view-provider.h
new file mode 100644
index 00000000..1bd21a5f
--- /dev/null
+++ b/libcaja-extension/caja-widget-view-provider.h
@@ -0,0 +1,79 @@
+/* vi: set sw=4 ts=4 wrap ai: */
+/*
+ * caja-widget-view-provider.h: This file is part of ____
+ *
+ * Copyright (C) 2019 yetist <yetist@yetipc>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * */
+
+#ifndef __CAJA_WIDGET_VIEW_PROVIDER_H__
+#define __CAJA_WIDGET_VIEW_PROVIDER_H__  1
+
+#include <glib-object.h>
+#include <gtk/gtk.h>
+#include "caja-file-info.h"
+#include "caja-extension-types.h"
+
+G_BEGIN_DECLS
+
+#define CAJA_TYPE_WIDGET_VIEW_PROVIDER           (caja_widget_view_provider_get_type ())
+#define CAJA_WIDGET_VIEW_PROVIDER(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), CAJA_TYPE_WIDGET_VIEW_PROVIDER, CajaWidgetViewProvider))
+#define CAJA_IS_WIDGET_VIEW_PROVIDER(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CAJA_TYPE_WIDGET_VIEW_PROVIDER))
+#define CAJA_WIDGET_VIEW_PROVIDER_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), CAJA_TYPE_WIDGET_VIEW_PROVIDER, CajaWidgetViewProviderIface))
+
+typedef struct _CajaWidgetViewProvider       CajaWidgetViewProvider;
+typedef struct _CajaWidgetViewProviderIface  CajaWidgetViewProviderIface;
+
+/**
+ * CajaWidgetViewProviderIface:
+ * @g_iface: The parent interface.
+ * @get_widget: Returns a #GtkWidget.
+ * See caja_widget_view_provider_get_widget() for details.
+ *
+ * Interface for extensions to provide widgets view.
+ */
+struct _CajaWidgetViewProviderIface {
+    GTypeInterface g_iface;
+
+    gboolean  (*supports_uri) (CajaWidgetViewProvider *provider,
+                               const char *uri,
+                               GFileType file_type,
+                               const char *mime_type);
+    GtkWidget* (*get_widget)   (CajaWidgetViewProvider *provider);
+    void       (*add_file)     (CajaWidgetViewProvider *provider, CajaFile *file, CajaFile *directory);
+    void       (*set_location) (CajaWidgetViewProvider *provider, const char *location);
+    void       (*set_window)   (CajaWidgetViewProvider *provider, GtkWindow *window);
+};
+
+/* Interface Functions */
+GType      caja_widget_view_provider_get_type     (void);
+
+GtkWidget *caja_widget_view_provider_get_widget   (CajaWidgetViewProvider *provider);
+void       caja_widget_view_provider_add_file     (CajaWidgetViewProvider *provider,
+                                                   CajaFile *file,
+                                                   CajaFile *directory);
+void       caja_widget_view_provider_set_location (CajaWidgetViewProvider *provider,
+                                                   const char *location);
+void       caja_widget_view_provider_set_window   (CajaWidgetViewProvider *provider,
+                                                   GtkWindow *window);
+gboolean   caja_widget_view_provider_supports_uri (CajaWidgetViewProvider *provider,
+                                                   const char *uri,
+                                                   GFileType file_type,
+                                                   const char *mime_type);
+G_END_DECLS
+
+#endif /* __CAJA_WIDGET_VIEW_PROVIDER_H__ */
diff --git a/src/caja-view-as-action.c b/src/caja-view-as-action.c
index 4c1a7d4b..27e70be2 100644
--- a/src/caja-view-as-action.c
+++ b/src/caja-view-as-action.c
@@ -145,6 +145,12 @@ view_as_changed_callback (CajaWindow *window,
         }
     }
     g_object_set_data (G_OBJECT (combo_box), "num viewers", GINT_TO_POINTER (index));
+
+    if (g_list_length (window->details->short_list_viewers) == 1)
+    {
+        selected_index = 0;
+    }
+
     if (selected_index == -1)
     {
         const char *id;
@@ -156,7 +162,6 @@ view_as_changed_callback (CajaWindow *window,
                                         _(info->view_combo_label));
         selected_index = index;
     }
-
     gtk_combo_box_set_active (combo_box, selected_index);
     if (g_list_length (window->details->short_list_viewers) == 1) {
         gtk_widget_hide(GTK_WIDGET(combo_box));
diff --git a/src/caja-window-manage-views.c b/src/caja-window-manage-views.c
index caaa858b..200fa791 100644
--- a/src/caja-window-manage-views.c
+++ b/src/caja-window-manage-views.c
@@ -1,4 +1,4 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 
 /*
  *  Caja
@@ -1309,9 +1309,9 @@ got_file_info_for_view_selection_callback (CajaFile *file,
     }
     else
     {
-    	if (!report_callback (slot, error)) {
-        	display_view_selection_failure (window, file,
-                	                        location, error);
+        if (!report_callback (slot, error)) {
+            display_view_selection_failure (window, file,
+                                            location, error);
         }
 
         if (!gtk_widget_get_visible (GTK_WIDGET (window)))
diff --git a/src/file-manager/fm-widget-view.c b/src/file-manager/fm-widget-view.c
index c22643a8..4edf473e 100644
--- a/src/file-manager/fm-widget-view.c
+++ b/src/file-manager/fm-widget-view.c
@@ -34,14 +34,16 @@
 #include <libcaja-private/caja-view-factory.h>
 #include <libcaja-private/caja-extensions.h>
 #include <libcaja-private/caja-module.h>
+#include <libcaja-private/caja-metadata.h>
 #include <libcaja-extension/caja-widget-view-provider.h>
 
 #include "fm-widget-view.h"
 
 struct _FMWidgetView
 {
-  FMDirectoryView object;
-  int             number_of_files;
+  FMDirectoryView         object;
+  int                     number_of_files;
+  CajaWidgetViewProvider *provider;
 };
 
 static GList *fm_widget_view_get_selection                   (FMDirectoryView   *view);
@@ -50,11 +52,12 @@ static void   fm_widget_view_scroll_to_file                  (CajaView *view, co
 static void   fm_widget_view_iface_init                      (CajaViewIface *iface);
 
 G_DEFINE_TYPE_WITH_CODE (FMWidgetView, fm_widget_view, FM_TYPE_DIRECTORY_VIEW,
-                G_IMPLEMENT_INTERFACE (CAJA_TYPE_VIEW, fm_widget_view_iface_init));
+                         G_IMPLEMENT_INTERFACE (CAJA_TYPE_VIEW, fm_widget_view_iface_init));
 
 static void
 fm_widget_view_add_file (FMDirectoryView *view, CajaFile *file, CajaDirectory *directory)
 {
+    CajaFile *file_dir;
     static GTimer *timer = NULL;
     static gdouble cumu = 0, elaps;
     FM_WIDGET_VIEW (view)->number_of_files++;
@@ -64,7 +67,7 @@ fm_widget_view_add_file (FMDirectoryView *view, CajaFile *file, CajaDirectory *d
 
     g_timer_start (timer);
     icon = caja_file_get_icon_surface (file, caja_get_icon_size_for_zoom_level (CAJA_ZOOM_LEVEL_STANDARD),
-                                      TRUE, gtk_widget_get_scale_factor (GTK_WIDGET(view)), 0);
+                                       TRUE, gtk_widget_get_scale_factor (GTK_WIDGET(view)), 0);
 
     elaps = g_timer_elapsed (timer, NULL);
     g_timer_stop (timer);
@@ -73,12 +76,63 @@ fm_widget_view_add_file (FMDirectoryView *view, CajaFile *file, CajaDirectory *d
 
     cumu += elaps;
     g_message ("entire loading: %.3f, cumulative %.3f", elaps, cumu);
+
+    FMWidgetView *widget_view;
+
+    widget_view = FM_WIDGET_VIEW (view);
+    file_dir = caja_directory_get_corresponding_file (directory);
+    caja_widget_view_provider_add_file (widget_view->provider, file, file_dir);
 }
 
 
 static void
 fm_widget_view_begin_loading (FMDirectoryView *view)
 {
+    GtkWindow *window;
+    CajaFile *file;
+    gchar *uri;
+    GList *providers, *l;
+    char *mimetype;
+    GtkWidget *widget;
+    FMWidgetView *widget_view;
+
+    widget_view = FM_WIDGET_VIEW (view);
+
+    uri = fm_directory_view_get_uri (view);
+    file = caja_file_get_by_uri (uri);
+    mimetype = caja_file_get_mime_type (file);
+
+    providers = caja_extensions_get_for_type (CAJA_TYPE_WIDGET_VIEW_PROVIDER);
+    for (l = providers; l != NULL; l = l->next)
+    {
+        CajaWidgetViewProvider *provider;
+
+        provider = CAJA_WIDGET_VIEW_PROVIDER (l->data);
+        if (caja_widget_view_provider_supports_uri (provider, uri,
+                                                    caja_file_get_file_type (file),
+                                                    mimetype)) {
+            widget_view->provider = provider;
+            break;
+        }
+    }
+
+    caja_module_extension_list_free (providers);
+
+    if (widget_view->provider == NULL) {
+        return;
+    }
+
+    caja_widget_view_provider_set_location (widget_view->provider, uri);
+
+    widget = caja_widget_view_provider_get_widget (widget_view->provider);
+    gtk_container_add (GTK_CONTAINER(widget_view), widget);
+
+    window = fm_directory_view_get_containing_window (view);
+    caja_widget_view_provider_set_window (widget_view->provider, window);
+
+    g_print("uri in widget_view = %s, window=%p\n", uri, window);
+
+    g_free (mimetype);
 }
 
 static void
@@ -183,7 +237,7 @@ fm_widget_view_get_zoom_level (FMDirectoryView *view)
 
 static void
 fm_widget_view_zoom_to_level (FMDirectoryView *view,
-                             CajaZoomLevel zoom_level)
+                              CajaZoomLevel zoom_level)
 {
 }
 
@@ -206,8 +260,8 @@ fm_widget_view_can_zoom_out (FMDirectoryView *view)
 
 static void
 fm_widget_view_start_renaming_file (FMDirectoryView *view,
-                                   CajaFile *file,
-                                   gboolean select_all)
+                                    CajaFile *file,
+                                    gboolean select_all)
 {
 }
 
@@ -263,6 +317,8 @@ fm_widget_view_emblems_changed (FMDirectoryView *directory_view)
 static char *
 fm_widget_view_get_first_visible_file (CajaView *view)
 {
+    //FIXME: return string to tell caja we are ready.
+    return g_strdup("file:///tmp/a.txt");
     return NULL;
 }
 
@@ -347,8 +403,15 @@ fm_widget_view_iface_init (CajaViewIface *iface)
 static void
 fm_widget_view_init (FMWidgetView *widget_view)
 {
-    GtkWindow *window;
-    window = fm_directory_view_get_containing_window (FM_DIRECTORY_VIEW(widget_view));
+    //GtkWidget *widget;
+
+    //widget = gtk_app_chooser_widget_new ("text/plain");
+    //gtk_app_chooser_widget_set_show_all (GTK_APP_CHOOSER_WIDGET(widget), TRUE);
+
+    //gtk_container_add (GTK_CONTAINER(widget_view), widget);
+    //gtk_widget_show(widget);
+
+    widget_view->provider = NULL;
 }
 
 static CajaView *
@@ -379,11 +442,16 @@ fm_widget_view_supports_uri (const char *uri,
         CajaWidgetViewProvider *provider;
 
         provider = CAJA_WIDGET_VIEW_PROVIDER (l->data);
-        if (caja_widget_view_supports_uri (provider, uri, file_type, mime_type)) {
+        if (caja_widget_view_provider_supports_uri (provider, uri, file_type, mime_type)) {
+            //CajaFile *file;
+            //file = caja_file_get_by_uri (uri);
+            //caja_file_set_metadata (file, CAJA_METADATA_KEY_DEFAULT_VIEW, NULL, FM_WIDGET_VIEW_ID);
+            //caja_file_unref (file);
             result = TRUE;
         }
     }
     caja_module_extension_list_free (providers);
+
     return result;
 }
 
@@ -391,7 +459,6 @@ static CajaViewInfo fm_widget_view =
 {
     .id = FM_WIDGET_VIEW_ID,
     .view_combo_label = N_("Widget View"),
-    /* translators: this is used in the view menu */
     .view_menu_label_with_mnemonic = N_("_Widget View"),
     .error_label = N_("The widget view encountered an error."),
     .startup_error_label = N_("The widget view encountered an error while starting up."),
@@ -410,6 +477,5 @@ fm_widget_view_register (void)
     fm_widget_view.startup_error_label = _(fm_widget_view.startup_error_label);
     fm_widget_view.display_location_label = _(fm_widget_view.display_location_label);
     fm_widget_view.single_view = TRUE;
-
     caja_view_factory_register (&fm_widget_view);
 }