-/*****************************************************************************/
-/* DRAG and DROP stuff */
-/*****************************************************************************/
-/*
- * This function fills the #GtkSelectionData with the row and the
- * model that has been dragged. It's called when this widget is a
- * source for dnd after the event drop happened
- */
-static void
-on_drag_data_get (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data,
- guint info, guint time, gpointer data)
-{
- GtkTreeSelection *selection;
- GtkTreeModel *model;
- GtkTreeIter iter;
- GtkTreePath *source_row;
-
- selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
- if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
-
- source_row = gtk_tree_model_get_path (model, &iter);
- gtk_tree_set_row_drag_data (selection_data,
- model,
- source_row);
-
- gtk_tree_path_free (source_row);
- }
-}
-
-typedef struct _DndHelper {
- ModestFolderView *folder_view;
- gboolean delete_source;
- GtkTreePath *source_row;
-} DndHelper;
-
-static void
-dnd_helper_destroyer (DndHelper *helper)
-{
- /* Free the helper */
- gtk_tree_path_free (helper->source_row);
- g_slice_free (DndHelper, helper);
-}
-
-static void
-xfer_folder_cb (ModestMailOperation *mail_op,
- TnyFolder *new_folder,
- gpointer user_data)
-{
- if (new_folder) {
- /* Select the folder */
- modest_folder_view_select_folder (MODEST_FOLDER_VIEW (user_data),
- new_folder, FALSE);
- }
-}
-
-
-/* get the folder for the row the treepath refers to. */
-/* folder must be unref'd */
-static TnyFolderStore *
-tree_path_to_folder (GtkTreeModel *model, GtkTreePath *path)
-{
- GtkTreeIter iter;
- TnyFolderStore *folder = NULL;
-
- if (gtk_tree_model_get_iter (model,&iter, path))
- gtk_tree_model_get (model, &iter,
- INSTANCE_COLUMN, &folder,
- -1);
- return folder;
-}
-
-
-/*
- * This function is used by drag_data_received_cb to manage drag and
- * drop of a header, i.e, and drag from the header view to the folder
- * view.
- */
-static void
-drag_and_drop_from_header_view (GtkTreeModel *source_model,
- GtkTreeModel *dest_model,
- GtkTreePath *dest_row,
- GtkSelectionData *selection_data)
-{
- TnyList *headers = NULL;
- TnyFolder *folder = NULL, *src_folder = NULL;
- TnyFolderType folder_type;
- GtkTreeIter source_iter, dest_iter;
- ModestWindowMgr *mgr = NULL;
- ModestWindow *main_win = NULL;
- gchar **uris, **tmp;
-
- /* Build the list of headers */
- mgr = modest_runtime_get_window_mgr ();
- headers = tny_simple_list_new ();
- uris = modest_dnd_selection_data_get_paths (selection_data);
- tmp = uris;
-
- while (*tmp != NULL) {
- TnyHeader *header;
- GtkTreePath *path;
- gboolean first = TRUE;
-
- /* Get header */
- path = gtk_tree_path_new_from_string (*tmp);
- gtk_tree_model_get_iter (source_model, &source_iter, path);
- gtk_tree_model_get (source_model, &source_iter,
- TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN,
- &header, -1);
-
- /* Do not enable d&d of headers already opened */
- if (!modest_window_mgr_find_registered_header(mgr, header, NULL))
- tny_list_append (headers, G_OBJECT (header));
-
- if (G_UNLIKELY (first)) {
- src_folder = tny_header_get_folder (header);
- first = FALSE;
- }
-
- /* Free and go on */
- gtk_tree_path_free (path);
- g_object_unref (header);
- tmp++;
- }
- g_strfreev (uris);
-
- /* This could happen ig we perform a d&d very quickly over the
- same row that row could dissapear because message is
- transferred */
- if (!TNY_IS_FOLDER (src_folder))
- goto cleanup;
-
- /* Get the target folder */
- gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
- gtk_tree_model_get (dest_model, &dest_iter,
- INSTANCE_COLUMN,
- &folder, -1);
-
- if (!folder || !TNY_IS_FOLDER(folder)) {
-/* g_warning ("%s: not a valid target folder (%p)", __FUNCTION__, folder); */
- goto cleanup;
- }
-
- folder_type = modest_tny_folder_guess_folder_type (folder);
- if (folder_type == TNY_FOLDER_TYPE_INVALID) {
-/* g_warning ("%s: invalid target folder", __FUNCTION__); */
- goto cleanup; /* cannot move messages there */
- }
-
- if (modest_tny_folder_get_rules((TNY_FOLDER(folder))) & MODEST_FOLDER_RULES_FOLDER_NON_WRITEABLE) {
-/* g_warning ("folder not writable"); */
- goto cleanup; /* verboten! */
- }
-
- /* Ask for confirmation to move */
- main_win = modest_window_mgr_get_main_window (mgr, FALSE); /* don't create */
- if (!main_win) {
- g_warning ("%s: BUG: no main window found", __FUNCTION__);
- goto cleanup;
- }
-
- /* Transfer messages */
- modest_ui_actions_transfer_messages_helper (GTK_WINDOW (main_win), src_folder,
- headers, folder);
-
- /* Frees */
-cleanup:
- if (G_IS_OBJECT (src_folder))
- g_object_unref (src_folder);
- if (G_IS_OBJECT(folder))
- g_object_unref (G_OBJECT (folder));
- if (G_IS_OBJECT(headers))
- g_object_unref (headers);
-}
-
-typedef struct {
- TnyFolderStore *src_folder;
- TnyFolderStore *dst_folder;
- ModestFolderView *folder_view;
- DndHelper *helper;
-} DndFolderInfo;
-
-static void
-dnd_folder_info_destroyer (DndFolderInfo *info)
-{
- if (info->src_folder)
- g_object_unref (info->src_folder);
- if (info->dst_folder)
- g_object_unref (info->dst_folder);
- g_slice_free (DndFolderInfo, info);
-}
-
-static void
-dnd_on_connection_failed_destroyer (DndFolderInfo *info,
- GtkWindow *parent_window,
- TnyAccount *account)
-{
- /* Show error */
- modest_ui_actions_on_account_connection_error (parent_window, account);
-
- /* Free the helper & info */
- dnd_helper_destroyer (info->helper);
- dnd_folder_info_destroyer (info);
-}
-
-static void
-drag_and_drop_from_folder_view_src_folder_performer (gboolean canceled,
- GError *err,
- GtkWindow *parent_window,
- TnyAccount *account,
- gpointer user_data)
-{
- DndFolderInfo *info = NULL;
- ModestMailOperation *mail_op;
-
- info = (DndFolderInfo *) user_data;
-
- if (err || canceled) {
- dnd_on_connection_failed_destroyer (info, parent_window, account);
- return;
- }
-
- /* Do the mail operation */
- mail_op = modest_mail_operation_new_with_error_handling ((GObject *) parent_window,
- modest_ui_actions_move_folder_error_handler,
- info->src_folder, NULL);
-
- modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
- mail_op);
-
- /* Transfer the folder */
- modest_mail_operation_xfer_folder (mail_op,
- TNY_FOLDER (info->src_folder),
- info->dst_folder,
- info->helper->delete_source,
- xfer_folder_cb,
- info->helper->folder_view);
-
- /* Frees */
- g_object_unref (G_OBJECT (mail_op));
- dnd_helper_destroyer (info->helper);
- dnd_folder_info_destroyer (info);
-}
-
-
-static void
-drag_and_drop_from_folder_view_dst_folder_performer (gboolean canceled,
- GError *err,
- GtkWindow *parent_window,
- TnyAccount *account,
- gpointer user_data)
-{
- DndFolderInfo *info = NULL;
-
- info = (DndFolderInfo *) user_data;
-
- if (err || canceled) {
- dnd_on_connection_failed_destroyer (info, parent_window, account);
- return;
- }
-
- /* Connect to source folder and perform the copy/move */
- modest_platform_connect_if_remote_and_perform (NULL, TRUE,
- info->src_folder,
- drag_and_drop_from_folder_view_src_folder_performer,
- info);
-}
-
-/*
- * This function is used by drag_data_received_cb to manage drag and
- * drop of a folder, i.e, and drag from the folder view to the same
- * folder view.
- */
-static void
-drag_and_drop_from_folder_view (GtkTreeModel *source_model,
- GtkTreeModel *dest_model,
- GtkTreePath *dest_row,
- GtkSelectionData *selection_data,
- DndHelper *helper)
-{
- GtkTreeIter dest_iter, iter;
- TnyFolderStore *dest_folder = NULL;
- TnyFolderStore *folder = NULL;
- gboolean forbidden = FALSE;
- ModestWindow *win;
- DndFolderInfo *info = NULL;
-
- win = modest_window_mgr_get_main_window (modest_runtime_get_window_mgr(), FALSE); /* don't create */
- if (!win) {
- g_warning ("%s: BUG: no main window", __FUNCTION__);
- dnd_helper_destroyer (helper);
- return;
- }
-
- if (!forbidden) {
- /* check the folder rules for the destination */
- folder = tree_path_to_folder (dest_model, dest_row);
- if (TNY_IS_FOLDER(folder)) {
- ModestTnyFolderRules rules =
- modest_tny_folder_get_rules (TNY_FOLDER (folder));
- forbidden = rules & MODEST_FOLDER_RULES_FOLDER_NON_WRITEABLE;
- } else if (TNY_IS_FOLDER_STORE(folder)) {
- /* enable local root as destination for folders */
- if (!MODEST_IS_TNY_LOCAL_FOLDERS_ACCOUNT (folder) &&
- !modest_tny_account_is_memory_card_account (TNY_ACCOUNT (folder)))
- forbidden = TRUE;
- }
- g_object_unref (folder);
- }
- if (!forbidden) {
- /* check the folder rules for the source */
- folder = tree_path_to_folder (source_model, helper->source_row);
- if (TNY_IS_FOLDER(folder)) {
- ModestTnyFolderRules rules =
- modest_tny_folder_get_rules (TNY_FOLDER (folder));
- forbidden = rules & MODEST_FOLDER_RULES_FOLDER_NON_MOVEABLE;
- } else
- forbidden = TRUE;
- g_object_unref (folder);
- }
-
-
- /* Check if the drag is possible */
- if (forbidden || !gtk_tree_path_compare (helper->source_row, dest_row)) {
- /* Show error */
- modest_platform_run_information_dialog ((GtkWindow *) win,
- _("mail_in_ui_folder_move_target_error"),
- FALSE);
- /* Restore the previous selection */
- folder = tree_path_to_folder (source_model, helper->source_row);
- if (folder) {
- if (TNY_IS_FOLDER (folder))
- modest_folder_view_select_folder (helper->folder_view,
- TNY_FOLDER (folder), FALSE);
- g_object_unref (folder);
- }
- dnd_helper_destroyer (helper);
- return;
- }
-
- /* Get data */
- gtk_tree_model_get_iter (dest_model, &dest_iter, dest_row);
- gtk_tree_model_get (dest_model, &dest_iter,
- INSTANCE_COLUMN,
- &dest_folder, -1);
- gtk_tree_model_get_iter (source_model, &iter, helper->source_row);
- gtk_tree_model_get (source_model, &iter,
- INSTANCE_COLUMN,
- &folder, -1);
-
- /* Create the info for the performer */
- info = g_slice_new0 (DndFolderInfo);
- info->src_folder = g_object_ref (folder);
- info->dst_folder = g_object_ref (dest_folder);
- info->helper = helper;
-
- /* Connect to the destination folder and perform the copy/move */
- modest_platform_connect_if_remote_and_perform (GTK_WINDOW (win), TRUE,
- dest_folder,
- drag_and_drop_from_folder_view_dst_folder_performer,
- info);
-
- /* Frees */
- g_object_unref (dest_folder);
- g_object_unref (folder);
-}
-
-/*
- * This function receives the data set by the "drag-data-get" signal
- * handler. This information comes within the #GtkSelectionData. This
- * function will manage both the drags of folders of the treeview and
- * drags of headers of the header view widget.
- */
-static void
-on_drag_data_received (GtkWidget *widget,
- GdkDragContext *context,
- gint x,
- gint y,
- GtkSelectionData *selection_data,
- guint target_type,
- guint time,
- gpointer data)
-{
- GtkWidget *source_widget;
- GtkTreeModel *dest_model, *source_model;
- GtkTreePath *source_row, *dest_row;
- GtkTreeViewDropPosition pos;
- gboolean delete_source = FALSE;
- gboolean success = FALSE;
-
- /* Do not allow further process */
- g_signal_stop_emission_by_name (widget, "drag-data-received");
- source_widget = gtk_drag_get_source_widget (context);
-
- /* Get the action */
- if (context->action == GDK_ACTION_MOVE) {
- delete_source = TRUE;
-
- /* Notify that there is no folder selected. We need to
- do this in order to update the headers view (and
- its monitors, because when moving, the old folder
- won't longer exist. We can not wait for the end of
- the operation, because the operation won't start if
- the folder is in use */
- if (source_widget == widget) {
- GtkTreeSelection *sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
- gtk_tree_selection_unselect_all (sel);
- }
- }
-
- /* Check if the get_data failed */
- if (selection_data == NULL || selection_data->length < 0)
- goto end;
-
- /* Select the destination model */
- dest_model = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
-
- /* Get the path to the destination row. Can not call
- gtk_tree_view_get_drag_dest_row() because the source row
- is not selected anymore */
- gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget), x, y,
- &dest_row, &pos);
-
- /* Only allow drops IN other rows */
- if (!dest_row ||
- pos == GTK_TREE_VIEW_DROP_BEFORE ||
- pos == GTK_TREE_VIEW_DROP_AFTER)
- goto end;
-
- success = TRUE;
- /* Drags from the header view */
- if (source_widget != widget) {
- source_model = gtk_tree_view_get_model (GTK_TREE_VIEW (source_widget));
-
- drag_and_drop_from_header_view (source_model,
- dest_model,
- dest_row,
- selection_data);
- } else {
- DndHelper *helper = NULL;
-
- /* Get the source model and row */
- gtk_tree_get_row_drag_data (selection_data,
- &source_model,
- &source_row);
-
- /* Create the helper */
- helper = g_slice_new0 (DndHelper);
- helper->delete_source = delete_source;
- helper->source_row = gtk_tree_path_copy (source_row);
- helper->folder_view = MODEST_FOLDER_VIEW (widget);
-
- drag_and_drop_from_folder_view (source_model,
- dest_model,
- dest_row,
- selection_data,
- helper);
-
- gtk_tree_path_free (source_row);
- }
-
- /* Frees */
- gtk_tree_path_free (dest_row);
-
- end:
- /* Finish the drag and drop */
- gtk_drag_finish (context, success, FALSE, time);
-}
-
-/*
- * We define a "drag-drop" signal handler because we do not want to
- * use the default one, because the default one always calls
- * gtk_drag_finish and we prefer to do it in the "drag-data-received"
- * signal handler, because there we have all the information available
- * to know if the dnd was a success or not.
- */
-static gboolean
-drag_drop_cb (GtkWidget *widget,
- GdkDragContext *context,
- gint x,
- gint y,
- guint time,
- gpointer user_data)
-{
- gpointer target;
-
- if (!context->targets)
- return FALSE;
-
- /* Check if we're dragging a folder row */
- target = gtk_drag_dest_find_target (widget, context, NULL);
-
- /* Request the data from the source. */
- gtk_drag_get_data(widget, context, target, time);
-
- return TRUE;
-}
-
-/*
- * This function expands a node of a tree view if it's not expanded
- * yet. Not sure why it needs the threads stuff, but gtk+`example code
- * does that, so that's why they're here.
- */
-static gint
-expand_row_timeout (gpointer data)
-{
- GtkTreeView *tree_view = data;
- GtkTreePath *dest_path = NULL;
- GtkTreeViewDropPosition pos;
- gboolean result = FALSE;
-
- gdk_threads_enter ();
-
- gtk_tree_view_get_drag_dest_row (tree_view,
- &dest_path,
- &pos);
-
- if (dest_path &&
- (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
- pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)) {
- gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
- gtk_tree_path_free (dest_path);
- }
- else {
- if (dest_path)
- gtk_tree_path_free (dest_path);
-
- result = TRUE;
- }
-
- gdk_threads_leave ();
-
- return result;
-}
-
-/*
- * This function is called whenever the pointer is moved over a widget
- * while dragging some data. It installs a timeout that will expand a
- * node of the treeview if not expanded yet. This function also calls
- * gdk_drag_status in order to set the suggested action that will be
- * used by the "drag-data-received" signal handler to know if we
- * should do a move or just a copy of the data.
- */
-static gboolean
-on_drag_motion (GtkWidget *widget,
- GdkDragContext *context,
- gint x,
- gint y,
- guint time,
- gpointer user_data)
-{
- GtkTreeViewDropPosition pos;
- GtkTreePath *dest_row;
- GtkTreeModel *dest_model;
- ModestFolderViewPrivate *priv;
- GdkDragAction suggested_action;
- gboolean valid_location = FALSE;
- TnyFolderStore *folder = NULL;
-
- priv = MODEST_FOLDER_VIEW_GET_PRIVATE (widget);
-
- if (priv->timer_expander != 0) {
- g_source_remove (priv->timer_expander);
- priv->timer_expander = 0;
- }
-
- gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
- x, y,
- &dest_row,
- &pos);
-
- /* Do not allow drops between folders */
- if (!dest_row ||
- pos == GTK_TREE_VIEW_DROP_BEFORE ||
- pos == GTK_TREE_VIEW_DROP_AFTER) {
- gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW (widget), NULL, 0);
- gdk_drag_status(context, 0, time);
- valid_location = FALSE;
- goto out;
- } else {
- valid_location = TRUE;
- }
-
- /* Check that the destination folder is writable */
- dest_model = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));
- folder = tree_path_to_folder (dest_model, dest_row);
- if (folder && TNY_IS_FOLDER (folder)) {
- ModestTnyFolderRules rules = modest_tny_folder_get_rules(TNY_FOLDER (folder));
-
- if (rules & MODEST_FOLDER_RULES_FOLDER_NON_WRITEABLE) {
- valid_location = FALSE;
- goto out;
- }
- }
-
- /* Expand the selected row after 1/2 second */
- if (!gtk_tree_view_row_expanded (GTK_TREE_VIEW (widget), dest_row)) {
- priv->timer_expander = g_timeout_add (500, expand_row_timeout, widget);
- }
- gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), dest_row, pos);
-
- /* Select the desired action. By default we pick MOVE */
- suggested_action = GDK_ACTION_MOVE;
-
- if (context->actions == GDK_ACTION_COPY)
- gdk_drag_status(context, GDK_ACTION_COPY, time);
- else if (context->actions == GDK_ACTION_MOVE)
- gdk_drag_status(context, GDK_ACTION_MOVE, time);
- else if (context->actions & suggested_action)
- gdk_drag_status(context, suggested_action, time);
- else
- gdk_drag_status(context, GDK_ACTION_DEFAULT, time);
-
- out:
- if (folder)
- g_object_unref (folder);
- if (dest_row) {
- gtk_tree_path_free (dest_row);
- }
- g_signal_stop_emission_by_name (widget, "drag-motion");
-
- return valid_location;
-}
-
-/*
- * This function sets the treeview as a source and a target for dnd
- * events. It also connects all the requirede signals.
- */
-static void
-setup_drag_and_drop (GtkTreeView *self)
-{
- /* Set up the folder view as a dnd destination. Set only the
- highlight flag, otherwise gtk will have a different
- behaviour */
-#ifdef MODEST_TOOLKIT_HILDON2
- return;
-#endif
- gtk_drag_dest_set (GTK_WIDGET (self),
- GTK_DEST_DEFAULT_HIGHLIGHT,
- folder_view_drag_types,
- G_N_ELEMENTS (folder_view_drag_types),
- GDK_ACTION_MOVE | GDK_ACTION_COPY);
-
- g_signal_connect (G_OBJECT (self),
- "drag_data_received",
- G_CALLBACK (on_drag_data_received),
- NULL);
-
-
- /* Set up the treeview as a dnd source */
- gtk_drag_source_set (GTK_WIDGET (self),
- GDK_BUTTON1_MASK,
- folder_view_drag_types,
- G_N_ELEMENTS (folder_view_drag_types),
- GDK_ACTION_MOVE | GDK_ACTION_COPY);
-
- g_signal_connect (G_OBJECT (self),
- "drag_motion",
- G_CALLBACK (on_drag_motion),
- NULL);
-
- g_signal_connect (G_OBJECT (self),
- "drag_data_get",
- G_CALLBACK (on_drag_data_get),
- NULL);
-
- g_signal_connect (G_OBJECT (self),
- "drag_drop",
- G_CALLBACK (drag_drop_cb),
- NULL);
-}
-
-/*
- * This function manages the navigation through the folders using the
- * keyboard or the hardware keys in the device
- */
-static gboolean
-on_key_pressed (GtkWidget *self,
- GdkEventKey *event,
- gpointer user_data)
-{
- GtkTreeSelection *selection;
- GtkTreeIter iter;
- GtkTreeModel *model;
- gboolean retval = FALSE;
-
- /* Up and Down are automatically managed by the treeview */
- if (event->keyval == GDK_Return) {
- /* Expand/Collapse the selected row */
- selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
- if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
- GtkTreePath *path;
-
- path = gtk_tree_model_get_path (model, &iter);
-
- if (gtk_tree_view_row_expanded (GTK_TREE_VIEW (self), path))
- gtk_tree_view_collapse_row (GTK_TREE_VIEW (self), path);
- else
- gtk_tree_view_expand_row (GTK_TREE_VIEW (self), path, FALSE);
- gtk_tree_path_free (path);
- }
- /* No further processing */
- retval = TRUE;
- }
-
- return retval;
-}