diff options
Diffstat (limited to 'widgets/misc/e-combo-cell-editable.c')
| -rw-r--r-- | widgets/misc/e-combo-cell-editable.c | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/widgets/misc/e-combo-cell-editable.c b/widgets/misc/e-combo-cell-editable.c new file mode 100644 index 0000000000..f8de7c9ebc --- /dev/null +++ b/widgets/misc/e-combo-cell-editable.c @@ -0,0 +1,423 @@ +/* + * e-combo-cell-editable.c + * + * Author: Mike Kestner <mkestner@ximian.com> + * + * Copyright (C) 2003 Ximian Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include <config.h> +#include <gdk/gdkkeysyms.h> +#include <gtk/gtkarrow.h> +#include <gtk/gtkbutton.h> +#include <gtk/gtkcelleditable.h> +#include <gtk/gtkcellrenderertext.h> +#include <gtk/gtkentry.h> +#include <gtk/gtkframe.h> +#include <gtk/gtkhbox.h> +#include <gtk/gtkliststore.h> +#include <gtk/gtkmain.h> +#include <gtk/gtktreeselection.h> +#include <gtk/gtktreeview.h> +#include <gtk/gtkwindow.h> + +#include "e-combo-cell-editable.h" + +struct _EComboCellEditablePriv { + GtkEntry *entry; + GtkWidget *popup; + GtkTreeView *tree_view; + gboolean cancelled; + GList *list; +}; + +#define GRAB_MASK (GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK) + +static GtkEventBoxClass *parent_class; + +static void +kill_popup (EComboCellEditable *ecce) +{ + gtk_grab_remove (GTK_WIDGET (ecce->priv->tree_view)); + gtk_widget_destroy (ecce->priv->popup); + + gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (ecce)); + gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (ecce)); +} + +static gboolean +popup_key_press_cb (GtkWidget *widget, GdkEventKey *event, EComboCellEditable *ecce) +{ + switch (event->keyval) { + case GDK_Escape: + ecce->priv->cancelled = TRUE; + kill_popup (ecce); + break; + + case GDK_Return: + case GDK_KP_Enter: + ecce->priv->cancelled = FALSE; + kill_popup (ecce); + break; + + default: + return FALSE; + } + + return TRUE; +} + +static gboolean +popup_button_press_cb (GtkWidget *widget, GdkEventButton *event, EComboCellEditable *ecce) +{ + GtkAllocation alloc; + gdouble rel_x, rel_y; + gint win_x, win_y; + + if (event->button != 1) + return FALSE; + + gdk_window_get_root_origin (widget->window, &win_x, &win_y); + alloc = ecce->priv->popup->allocation; + + rel_x = event->x_root - win_x - alloc.x; + rel_y = event->y_root - win_y - alloc.y; + + if (rel_x > 0 && rel_x < alloc.width && rel_y > 0 && rel_y < alloc.height) + return FALSE; + + ecce->priv->cancelled = TRUE; + kill_popup (ecce); + + return FALSE; +} + +static gboolean +tree_button_release_cb (GtkWidget *widget, GdkEventButton *event, EComboCellEditable *ecce) +{ + kill_popup (ecce); + return TRUE; +} + +static void +selection_changed_cb (GtkTreeSelection *selection, EComboCellEditable *ecce) +{ + GtkTreeModel *model; + GtkTreeIter iter; + gchar *text; + + if (!gtk_tree_selection_get_selected (selection, &model, &iter)) + return; + + gtk_tree_model_get (model, &iter, 0, &text, -1); + e_combo_cell_editable_set_text (ecce, text); + g_free (text); +} + +static void +build_popup (EComboCellEditable *ecce) +{ + GtkWidget *frame; + GtkTreeSelection *selection; + GtkTreeModel *model; + GtkTreeIter iter; + GList *l; + + ecce->priv->popup = gtk_window_new (GTK_WINDOW_POPUP); + + g_signal_connect (ecce->priv->popup, "button-press-event", G_CALLBACK (popup_button_press_cb), ecce); + g_signal_connect (ecce->priv->popup, "key-press-event", G_CALLBACK (popup_key_press_cb), ecce); + + frame = gtk_frame_new (NULL); + gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT); + gtk_widget_show (frame); + gtk_container_add (GTK_CONTAINER (ecce->priv->popup), frame); + + ecce->priv->tree_view = GTK_TREE_VIEW (gtk_tree_view_new ()); + model = GTK_TREE_MODEL (gtk_list_store_new (1, G_TYPE_STRING)); + + for (l = ecce->priv->list; l; l = l->next) { + gtk_list_store_append (GTK_LIST_STORE (model), &iter); + gtk_list_store_set (GTK_LIST_STORE (model), &iter, 0, l->data, -1); + } + + gtk_tree_view_set_model (ecce->priv->tree_view, model); + g_object_unref (model); + gtk_container_add (GTK_CONTAINER (frame), GTK_WIDGET (ecce->priv->tree_view)); + + gtk_tree_view_set_headers_visible (ecce->priv->tree_view, FALSE); + + gtk_tree_view_insert_column_with_attributes (ecce->priv->tree_view, 0, NULL, + gtk_cell_renderer_text_new (), + "text", 0, + NULL); + + g_signal_connect (ecce->priv->tree_view, "button-release-event", G_CALLBACK (tree_button_release_cb), ecce); + + selection = gtk_tree_view_get_selection (ecce->priv->tree_view); + gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE); + g_signal_connect (selection, "changed", G_CALLBACK (selection_changed_cb), ecce); + + gtk_widget_show (GTK_WIDGET (ecce->priv->tree_view)); +} + +static gint +lookup_row (GList *list, const gchar *text) +{ + GList *l; + gint result = 0; + + for (l = list; l; l = l->next, result++) + if (!g_utf8_collate (text, (char *) l->data)) + break; + + return result; +} + +static void +set_cursor (GtkTreeView *tree_view, gint index) +{ + GtkTreePath *path = gtk_tree_path_new (); + gtk_tree_path_append_index (path, index); + + gtk_tree_view_set_cursor (tree_view, path, NULL, FALSE); + + gtk_tree_path_free (path); +} + +static void +grab_popup (GdkWindow *popup) +{ + gdk_pointer_grab (popup, TRUE, GRAB_MASK, NULL, NULL, gtk_get_current_event_time ()); + gdk_keyboard_grab (popup, TRUE, gtk_get_current_event_time ()); +} + +static void +position_popup (EComboCellEditable *ecce, gint x, gint y, gint offset) +{ + GtkRequisition req; + + gtk_widget_realize (ecce->priv->popup); + gtk_widget_size_request (ecce->priv->popup, &req); + + if (req.height > gdk_screen_height () - y) { + y -= (offset + req.height); + if (y < 0) + y = 0; + } + + gtk_window_move (GTK_WINDOW (ecce->priv->popup), x, y); + gtk_widget_show (ecce->priv->popup); +} + +static void +show_popup (EComboCellEditable *ecce, gint x, gint y, gint offset) +{ + gint row; + + if (!ecce->priv->list) + return; + + build_popup (ecce); + row = lookup_row (ecce->priv->list, e_combo_cell_editable_get_text (ecce)); + set_cursor (ecce->priv->tree_view, row); + + position_popup (ecce, x, y, offset); + + gtk_grab_add (GTK_WIDGET (ecce->priv->popup)); + gtk_widget_grab_focus (GTK_WIDGET (ecce->priv->tree_view)); + grab_popup (GTK_WIDGET (ecce->priv->popup)->window); +} + +static void +button_clicked_cb (GtkButton *btn, EComboCellEditable *ecce) +{ + GtkAllocation alloc; + gint x, y; + + if (ecce->priv->popup) { + kill_popup (ecce); + return; + } + + gtk_editable_select_region (GTK_EDITABLE (ecce->priv->entry), 0, 0); + + gdk_window_get_origin (GTK_WIDGET (ecce)->window, &x, &y); + + alloc = GTK_WIDGET (ecce)->allocation; + + show_popup (ecce, x, y + alloc.height, alloc.height); +} + +static void +entry_activated_cb (GtkEntry *entry, EComboCellEditable *widget) +{ + gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (widget)); + gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (widget)); +} + +static gboolean +entry_key_press_event_cb (GtkEntry *entry, GdkEventKey *key_event, EComboCellEditable *ecce) +{ + if (key_event->keyval == GDK_Escape) { + ecce->priv->cancelled = TRUE; + gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (ecce)); + gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (ecce)); + return TRUE; + } + + return FALSE; +} + +static void +ecce_start_editing (GtkCellEditable *cell_editable, GdkEvent *event) +{ + EComboCellEditable *ecce = E_COMBO_CELL_EDITABLE (cell_editable); + + gtk_editable_select_region (GTK_EDITABLE (ecce->priv->entry), 0, -1); +} + +static void +ecce_cell_editable_init (GtkCellEditableIface *iface) +{ + iface->start_editing = ecce_start_editing; +} + +static void +ecce_finalize (GObject *obj) +{ + EComboCellEditable *ecce = (EComboCellEditable *) obj; + + g_free (ecce->priv); + + if (G_OBJECT_CLASS (parent_class)->finalize) + G_OBJECT_CLASS (parent_class)->finalize (obj); +} + +static void +ecce_init (EComboCellEditable *ecce) +{ + GtkWidget *entry, *btn, *box; + + box = gtk_hbox_new (FALSE, 0); + gtk_widget_show (box); + gtk_container_add (GTK_CONTAINER (ecce), box); + + ecce->priv = g_new0 (EComboCellEditablePriv, 1); + + entry = gtk_entry_new (); + ecce->priv->entry = GTK_ENTRY (entry); + gtk_entry_set_has_frame (ecce->priv->entry, FALSE); + gtk_entry_set_editable (ecce->priv->entry, FALSE); + g_signal_connect (entry, "activate", G_CALLBACK (entry_activated_cb), ecce); + g_signal_connect (entry, "key_press_event", G_CALLBACK (entry_key_press_event_cb), ecce); + gtk_widget_show (entry); + gtk_box_pack_start (GTK_BOX (box), entry, TRUE, TRUE, 0); + + btn = gtk_button_new (); + gtk_container_add (GTK_CONTAINER (btn), gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT)); + g_signal_connect (btn, "clicked", (GCallback) button_clicked_cb, ecce); + gtk_widget_show_all (btn); + gtk_box_pack_start (GTK_BOX (box), btn, FALSE, TRUE, 0); +} + +static void +ecce_class_init (GObjectClass *klass) +{ + klass->finalize = ecce_finalize; + + parent_class = GTK_EVENT_BOX_CLASS (g_type_class_peek_parent (klass)); +} + +GType +e_combo_cell_editable_get_type (void) +{ + static GType ecce_type = 0; + + if (!ecce_type) { + static const GTypeInfo ecce_info = { + sizeof (EComboCellEditableClass), + NULL, /* base_init */ + NULL, /* base_finalize */ + (GClassInitFunc) ecce_class_init, + NULL, /* class_finalize */ + NULL, /* class_data */ + sizeof (EComboCellEditable), + 0, /* n_preallocs */ + (GInstanceInitFunc) ecce_init, + }; + + static const GInterfaceInfo cell_editable_info = { + (GInterfaceInitFunc) ecce_cell_editable_init, + NULL, + NULL + }; + + ecce_type = g_type_register_static (GTK_TYPE_EVENT_BOX, "EComboCellEditable", &ecce_info, 0); + + g_type_add_interface_static (ecce_type, GTK_TYPE_CELL_EDITABLE, &cell_editable_info); + } + + return ecce_type; +} + +GtkCellEditable * +e_combo_cell_editable_new () +{ + return GTK_CELL_EDITABLE (g_object_new (E_TYPE_COMBO_CELL_EDITABLE, NULL)); +} + +const GList * +e_combo_cell_editable_get_list (EComboCellEditable *ecce) +{ + g_return_val_if_fail (E_COMBO_CELL_EDITABLE (ecce), NULL); + + return ecce->priv->list; +} + +void +e_combo_cell_editable_set_list (EComboCellEditable *ecce, GList *list) +{ + g_return_if_fail (E_IS_COMBO_CELL_EDITABLE (ecce)); + + ecce->priv->list = list; +} + +const gchar * +e_combo_cell_editable_get_text (EComboCellEditable *ecce) +{ + g_return_val_if_fail (E_COMBO_CELL_EDITABLE (ecce), NULL); + + return gtk_entry_get_text (ecce->priv->entry); +} + +void +e_combo_cell_editable_set_text (EComboCellEditable *ecce, const gchar *text) +{ + g_return_if_fail (E_IS_COMBO_CELL_EDITABLE (ecce)); + + gtk_entry_set_text (ecce->priv->entry, text ? text : ""); +} + +gboolean +e_combo_cell_editable_cancelled (EComboCellEditable *ecce) +{ + g_return_val_if_fail (E_IS_COMBO_CELL_EDITABLE (ecce), FALSE); + + return ecce->priv->cancelled; +} + |