moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 535 insertions, 0 deletions

diff --git a/src/caja-notes-viewer.c b/src/caja-notes-viewer.c
new file mode 100644
index 00000000..0ae29348
--- /dev/null
+++ b/src/caja-notes-viewer.c
@@ -0,0 +1,535 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
+
+/*
+ *  Caja
+ *
+ *  Copyright (C) 2000, 2001 Eazel, Inc.
+ *
+ *  This library 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 library 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 library; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Author: Andy Hertzfeld <[email protected]>
+ *
+ */
+
+/* notes sidebar panel -- allows editing per-directory notes */
+
+#include <config.h>
+
+#include "caja-notes-viewer.h"
+
+#include <eel/eel-debug.h>
+#include <eel/eel-gtk-extensions.h>
+#include <eel/eel-string.h>
+#include <gtk/gtk.h>
+#include <glib/gi18n.h>
+#include <libcaja-private/caja-file-attributes.h>
+#include <libcaja-private/caja-file.h>
+#include <libcaja-private/caja-file-utilities.h>
+#include <libcaja-private/caja-global-preferences.h>
+#include <libcaja-private/caja-metadata.h>
+#include <libcaja-private/caja-clipboard.h>
+#include <libcaja-private/caja-module.h>
+#include <libcaja-private/caja-sidebar-provider.h>
+#include <libcaja-private/caja-window-info.h>
+#include <libcaja-private/caja-window-slot-info.h>
+#include <libcaja-extension/caja-property-page-provider.h>
+
+#define SAVE_TIMEOUT 3
+
+static void load_note_text_from_metadata             (CajaFile                      *file,
+        CajaNotesViewer               *notes);
+static void notes_save_metainfo                      (CajaNotesViewer               *notes);
+static void caja_notes_viewer_sidebar_iface_init (CajaSidebarIface              *iface);
+static void on_changed                               (GtkEditable                       *editable,
+        CajaNotesViewer               *notes);
+static void property_page_provider_iface_init        (CajaPropertyPageProviderIface *iface);
+static void sidebar_provider_iface_init              (CajaSidebarProviderIface       *iface);
+
+typedef struct
+{
+    GtkScrolledWindowClass parent;
+} CajaNotesViewerClass;
+
+typedef struct
+{
+    GObject parent;
+} CajaNotesViewerProvider;
+
+typedef struct
+{
+    GObjectClass parent;
+} CajaNotesViewerProviderClass;
+
+
+G_DEFINE_TYPE_WITH_CODE (CajaNotesViewer, caja_notes_viewer, GTK_TYPE_SCROLLED_WINDOW,
+                         G_IMPLEMENT_INTERFACE (CAJA_TYPE_SIDEBAR,
+                                 caja_notes_viewer_sidebar_iface_init));
+
+static GType caja_notes_viewer_provider_get_type (void);
+
+G_DEFINE_TYPE_WITH_CODE (CajaNotesViewerProvider, caja_notes_viewer_provider, G_TYPE_OBJECT,
+                         G_IMPLEMENT_INTERFACE (CAJA_TYPE_PROPERTY_PAGE_PROVIDER,
+                                 property_page_provider_iface_init);
+                         G_IMPLEMENT_INTERFACE (CAJA_TYPE_SIDEBAR_PROVIDER,
+                                 sidebar_provider_iface_init));
+
+
+struct _CajaNotesViewerDetails
+{
+    GtkWidget *note_text_field;
+    GtkTextBuffer *text_buffer;
+    char *uri;
+    CajaFile *file;
+    guint save_timeout_id;
+    char *previous_saved_text;
+    GdkPixbuf *icon;
+};
+
+static gboolean
+schedule_save_callback (gpointer data)
+{
+    CajaNotesViewer *notes;
+
+    notes = data;
+
+    /* Zero out save_timeout_id so no one will try to cancel our
+     * in-progress timeout callback.
+         */
+    notes->details->save_timeout_id = 0;
+
+    notes_save_metainfo (notes);
+
+    return FALSE;
+}
+
+static void
+cancel_pending_save (CajaNotesViewer *notes)
+{
+    if (notes->details->save_timeout_id != 0)
+    {
+        g_source_remove (notes->details->save_timeout_id);
+        notes->details->save_timeout_id = 0;
+    }
+}
+
+static void
+schedule_save (CajaNotesViewer *notes)
+{
+    cancel_pending_save (notes);
+
+    notes->details->save_timeout_id = g_timeout_add_seconds (SAVE_TIMEOUT, schedule_save_callback, notes);
+}
+
+/* notifies event listeners if the notes data actually changed */
+static void
+set_saved_text (CajaNotesViewer *notes, char *new_notes)
+{
+    char *old_text;
+
+    old_text = notes->details->previous_saved_text;
+    notes->details->previous_saved_text = new_notes;
+
+    if (eel_strcmp (old_text, new_notes) != 0)
+    {
+        g_signal_emit_by_name (CAJA_SIDEBAR (notes),
+                               "tab_icon_changed");
+    }
+
+    g_free (old_text);
+}
+
+/* save the metainfo corresponding to the current uri, if any, into the text field */
+static void
+notes_save_metainfo (CajaNotesViewer *notes)
+{
+    char *notes_text;
+    GtkTextIter start_iter;
+    GtkTextIter end_iter;
+
+    if (notes->details->file == NULL)
+    {
+        return;
+    }
+
+    cancel_pending_save (notes);
+
+    /* Block the handler, so we don't respond to our own change.
+     */
+    g_signal_handlers_block_matched (notes->details->file,
+                                     G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
+                                     0, 0, NULL,
+                                     G_CALLBACK (load_note_text_from_metadata),
+                                     notes);
+
+    gtk_text_buffer_get_start_iter (notes->details->text_buffer, &start_iter);
+    gtk_text_buffer_get_end_iter (notes->details->text_buffer, &end_iter);
+    notes_text = gtk_text_buffer_get_text (notes->details->text_buffer,
+                                           &start_iter,
+                                           &end_iter,
+                                           FALSE);
+
+    caja_file_set_metadata (notes->details->file,
+                            CAJA_METADATA_KEY_ANNOTATION,
+                            NULL, notes_text);
+
+    g_signal_handlers_unblock_matched (notes->details->file,
+                                       G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
+                                       0, 0, NULL,
+                                       G_CALLBACK (load_note_text_from_metadata),
+                                       notes);
+
+    set_saved_text (notes, notes_text);
+}
+
+static void
+load_note_text_from_metadata (CajaFile *file,
+                              CajaNotesViewer *notes)
+{
+    char *saved_text;
+
+    g_assert (CAJA_IS_FILE (file));
+    g_assert (notes->details->file == file);
+
+    saved_text = caja_file_get_metadata (file, CAJA_METADATA_KEY_ANNOTATION, "");
+
+    /* This fn is called for any change signal on the file, so make sure that the
+     * metadata has actually changed.
+     */
+    if (eel_strcmp (saved_text, notes->details->previous_saved_text) != 0)
+    {
+        set_saved_text (notes, saved_text);
+        cancel_pending_save (notes);
+
+        /* Block the handler, so we don't respond to our own change.
+         */
+        g_signal_handlers_block_matched (notes->details->text_buffer,
+                                         G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
+                                         0, 0, NULL,
+                                         G_CALLBACK (on_changed),
+                                         notes);
+        gtk_text_buffer_set_text (notes->details->text_buffer, saved_text, -1);
+        g_signal_handlers_unblock_matched (notes->details->text_buffer,
+                                           G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
+                                           0, 0, NULL,
+                                           G_CALLBACK (on_changed),
+                                           notes);
+    }
+    else
+    {
+        g_free (saved_text);
+    }
+}
+
+static void
+done_with_file (CajaNotesViewer *notes)
+{
+    cancel_pending_save (notes);
+
+    if (notes->details->file != NULL)
+    {
+        caja_file_monitor_remove (notes->details->file, notes);
+        g_signal_handlers_disconnect_matched (notes->details->file,
+                                              G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
+                                              0, 0, NULL,
+                                              G_CALLBACK (load_note_text_from_metadata),
+                                              notes);
+        caja_file_unref (notes->details->file);
+    }
+}
+
+static void
+notes_load_metainfo (CajaNotesViewer *notes)
+{
+    CajaFileAttributes attributes;
+
+    done_with_file (notes);
+    notes->details->file = caja_file_get_by_uri (notes->details->uri);
+
+    /* Block the handler, so we don't respond to our own change.
+     */
+    g_signal_handlers_block_matched (notes->details->text_buffer,
+                                     G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
+                                     0, 0, NULL,
+                                     G_CALLBACK (on_changed),
+                                     notes);
+    gtk_text_buffer_set_text (notes->details->text_buffer, "", -1);
+    g_signal_handlers_unblock_matched (notes->details->text_buffer,
+                                       G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
+                                       0, 0, NULL,
+                                       G_CALLBACK (on_changed),
+                                       notes);
+
+    if (notes->details->file == NULL)
+    {
+        return;
+    }
+
+    attributes = CAJA_FILE_ATTRIBUTE_INFO;
+    caja_file_monitor_add (notes->details->file, notes, attributes);
+
+    if (caja_file_check_if_ready (notes->details->file, attributes))
+    {
+        load_note_text_from_metadata (notes->details->file, notes);
+    }
+
+    g_signal_connect (notes->details->file, "changed",
+                      G_CALLBACK (load_note_text_from_metadata), notes);
+}
+
+static void
+loading_uri_callback (CajaWindowInfo *window,
+                      const char *location,
+                      CajaNotesViewer *notes)
+{
+    if (strcmp (notes->details->uri, location) != 0)
+    {
+        notes_save_metainfo (notes);
+        g_free (notes->details->uri);
+        notes->details->uri = g_strdup (location);
+        notes_load_metainfo (notes);
+    }
+}
+
+static gboolean
+on_text_field_focus_out_event (GtkWidget *widget,
+                               GdkEventFocus *event,
+                               gpointer callback_data)
+{
+    CajaNotesViewer *notes;
+
+    notes = callback_data;
+    notes_save_metainfo (notes);
+    return FALSE;
+}
+
+static void
+on_changed (GtkEditable *editable, CajaNotesViewer *notes)
+{
+    schedule_save (notes);
+}
+
+static void
+caja_notes_viewer_init (CajaNotesViewer *sidebar)
+{
+    CajaNotesViewerDetails *details;
+    CajaIconInfo *info;
+
+    details = g_new0 (CajaNotesViewerDetails, 1);
+    sidebar->details = details;
+
+    details->uri = g_strdup ("");
+
+    info = caja_icon_info_lookup_from_name ("emblem-note", 16);
+    details->icon = caja_icon_info_get_pixbuf (info);
+
+    /* create the text container */
+    details->text_buffer = gtk_text_buffer_new (NULL);
+    details->note_text_field = gtk_text_view_new_with_buffer (details->text_buffer);
+
+    gtk_text_view_set_editable (GTK_TEXT_VIEW (details->note_text_field), TRUE);
+    gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (details->note_text_field),
+                                 GTK_WRAP_WORD);
+    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sidebar),
+                                    GTK_POLICY_AUTOMATIC,
+                                    GTK_POLICY_AUTOMATIC);
+    gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sidebar),
+                                         GTK_SHADOW_IN);
+    gtk_scrolled_window_set_hadjustment (GTK_SCROLLED_WINDOW (sidebar), NULL);
+    gtk_scrolled_window_set_vadjustment (GTK_SCROLLED_WINDOW (sidebar), NULL);
+    gtk_container_add (GTK_CONTAINER (sidebar), details->note_text_field);
+
+    g_signal_connect (details->note_text_field, "focus_out_event",
+                      G_CALLBACK (on_text_field_focus_out_event), sidebar);
+    g_signal_connect (details->text_buffer, "changed",
+                      G_CALLBACK (on_changed), sidebar);
+
+    gtk_widget_show_all (GTK_WIDGET (sidebar));
+
+}
+
+static void
+caja_notes_viewer_finalize (GObject *object)
+{
+    CajaNotesViewer *sidebar;
+
+    sidebar = CAJA_NOTES_VIEWER (object);
+
+    done_with_file (sidebar);
+    if (sidebar->details->icon != NULL)
+    {
+        g_object_unref (sidebar->details->icon);
+    }
+    g_free (sidebar->details->uri);
+    g_free (sidebar->details->previous_saved_text);
+    g_free (sidebar->details);
+
+    G_OBJECT_CLASS (caja_notes_viewer_parent_class)->finalize (object);
+}
+
+
+static void
+caja_notes_viewer_class_init (CajaNotesViewerClass *class)
+{
+    G_OBJECT_CLASS (class)->finalize = caja_notes_viewer_finalize;
+}
+
+static const char *
+caja_notes_viewer_get_sidebar_id (CajaSidebar *sidebar)
+{
+    return CAJA_NOTES_SIDEBAR_ID;
+}
+
+static char *
+caja_notes_viewer_get_tab_label (CajaSidebar *sidebar)
+{
+    return g_strdup (_("Notes"));
+}
+
+static char *
+caja_notes_viewer_get_tab_tooltip (CajaSidebar *sidebar)
+{
+    return g_strdup (_("Show Notes"));
+}
+
+static GdkPixbuf *
+caja_notes_viewer_get_tab_icon (CajaSidebar *sidebar)
+{
+    CajaNotesViewer *notes;
+
+    notes = CAJA_NOTES_VIEWER (sidebar);
+
+    if (notes->details->previous_saved_text != NULL &&
+            notes->details->previous_saved_text[0] != '\0')
+    {
+        return g_object_ref (notes->details->icon);
+    }
+
+    return NULL;
+}
+
+static void
+caja_notes_viewer_is_visible_changed (CajaSidebar *sidebar,
+                                      gboolean         is_visible)
+{
+    /* Do nothing */
+}
+
+static void
+caja_notes_viewer_sidebar_iface_init (CajaSidebarIface *iface)
+{
+    iface->get_sidebar_id = caja_notes_viewer_get_sidebar_id;
+    iface->get_tab_label = caja_notes_viewer_get_tab_label;
+    iface->get_tab_tooltip = caja_notes_viewer_get_tab_tooltip;
+    iface->get_tab_icon = caja_notes_viewer_get_tab_icon;
+    iface->is_visible_changed = caja_notes_viewer_is_visible_changed;
+}
+
+static void
+caja_notes_viewer_set_parent_window (CajaNotesViewer *sidebar,
+                                     CajaWindowInfo *window)
+{
+    CajaWindowSlotInfo *slot;
+
+    slot = caja_window_info_get_active_slot (window);
+
+    g_signal_connect_object (window, "loading_uri",
+                             G_CALLBACK (loading_uri_callback), sidebar, 0);
+
+    g_free (sidebar->details->uri);
+    sidebar->details->uri = caja_window_slot_info_get_current_location (slot);
+    notes_load_metainfo (sidebar);
+
+    caja_clipboard_set_up_text_view
+    (GTK_TEXT_VIEW (sidebar->details->note_text_field),
+     caja_window_info_get_ui_manager (window));
+}
+
+static CajaSidebar *
+caja_notes_viewer_create_sidebar (CajaSidebarProvider *provider,
+                                  CajaWindowInfo *window)
+{
+    CajaNotesViewer *sidebar;
+
+    sidebar = g_object_new (caja_notes_viewer_get_type (), NULL);
+    caja_notes_viewer_set_parent_window (sidebar, window);
+    g_object_ref_sink (sidebar);
+
+    return CAJA_SIDEBAR (sidebar);
+}
+
+static GList *
+get_property_pages (CajaPropertyPageProvider *provider,
+                    GList *files)
+{
+    GList *pages;
+    CajaPropertyPage *page;
+    CajaFileInfo *file;
+    char *uri;
+    CajaNotesViewer *viewer;
+
+
+    /* Only show the property page if 1 file is selected */
+    if (!files || files->next != NULL)
+    {
+        return NULL;
+    }
+
+    pages = NULL;
+
+    file = CAJA_FILE_INFO (files->data);
+    uri = caja_file_info_get_uri (file);
+
+    viewer = g_object_new (caja_notes_viewer_get_type (), NULL);
+    g_free (viewer->details->uri);
+    viewer->details->uri = uri;
+    notes_load_metainfo (viewer);
+
+    page = caja_property_page_new
+           ("CajaNotesViewer::property_page",
+            gtk_label_new (_("Notes")),
+            GTK_WIDGET (viewer));
+    pages = g_list_append (pages, page);
+
+    return pages;
+}
+
+static void
+property_page_provider_iface_init (CajaPropertyPageProviderIface *iface)
+{
+    iface->get_pages = get_property_pages;
+}
+
+static void
+sidebar_provider_iface_init (CajaSidebarProviderIface *iface)
+{
+    iface->create = caja_notes_viewer_create_sidebar;
+}
+
+static void
+caja_notes_viewer_provider_init (CajaNotesViewerProvider *sidebar)
+{
+}
+
+static void
+caja_notes_viewer_provider_class_init (CajaNotesViewerProviderClass *class)
+{
+}
+
+void
+caja_notes_viewer_register (void)
+{
+    caja_module_add_type (caja_notes_viewer_provider_get_type ());
+}
+