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-rw-r--r--widgets/misc/e-hinted-entry.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/widgets/misc/e-hinted-entry.c b/widgets/misc/e-hinted-entry.c
new file mode 100644
index 0000000000..ca75e85297
--- /dev/null
+++ b/widgets/misc/e-hinted-entry.c
@@ -0,0 +1,298 @@
+/*
+ * e-hinted-entry.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "e-hinted-entry.h"
+
+#define E_HINTED_ENTRY_GET_PRIVATE(obj) \
+ (G_TYPE_INSTANCE_GET_PRIVATE \
+ ((obj), E_TYPE_HINTED_ENTRY, EHintedEntryPrivate))
+
+struct _EHintedEntryPrivate {
+ gchar *hint;
+ guint hint_shown : 1;
+};
+
+enum {
+ PROP_0,
+ PROP_HINT,
+ PROP_HINT_SHOWN
+};
+
+static gpointer parent_class;
+
+static void
+hinted_entry_hide_hint (EHintedEntry *entry)
+{
+ gtk_entry_set_text (GTK_ENTRY (entry), "");
+
+ gtk_widget_modify_text (GTK_WIDGET (entry), GTK_STATE_NORMAL, NULL);
+
+ entry->priv->hint_shown = FALSE;
+
+ g_object_notify (G_OBJECT (entry), "hint-shown");
+}
+
+static void
+hinted_entry_show_hint (EHintedEntry *entry)
+{
+ GtkStyle *style;
+ const GdkColor *color;
+ const gchar *hint;
+
+ hint = e_hinted_entry_get_hint (entry);
+ gtk_entry_set_text (GTK_ENTRY (entry), hint);
+
+ style = gtk_widget_get_style (GTK_WIDGET (entry));
+ color = &style->text[GTK_STATE_INSENSITIVE];
+ gtk_widget_modify_text (GTK_WIDGET (entry), GTK_STATE_NORMAL, color);
+
+ entry->priv->hint_shown = TRUE;
+
+ g_object_notify (G_OBJECT (entry), "hint-shown");
+}
+
+static void
+hinted_entry_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ switch (property_id) {
+ case PROP_HINT:
+ e_hinted_entry_set_hint (
+ E_HINTED_ENTRY (object),
+ g_value_get_string (value));
+ return;
+ }
+
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+hinted_entry_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ switch (property_id) {
+ case PROP_HINT:
+ g_value_set_string (
+ value, e_hinted_entry_get_hint (
+ E_HINTED_ENTRY (object)));
+ return;
+
+ case PROP_HINT_SHOWN:
+ g_value_set_boolean (
+ value, e_hinted_entry_get_hint_shown (
+ E_HINTED_ENTRY (object)));
+ return;
+ }
+
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+hinted_entry_finalize (GObject *object)
+{
+ EHintedEntryPrivate *priv;
+
+ priv = E_HINTED_ENTRY_GET_PRIVATE (object);
+
+ g_free (priv->hint);
+
+ /* Chain up to parent's finalize() method. */
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+hinted_entry_focus_in_event (GtkWidget *widget,
+ GdkEventFocus *event)
+{
+ EHintedEntry *entry = E_HINTED_ENTRY (widget);
+
+ if (e_hinted_entry_get_hint_shown (entry))
+ hinted_entry_hide_hint (entry);
+
+ /* Chain up to parent's focus_in_event() method. */
+ return GTK_WIDGET_CLASS (parent_class)->
+ focus_in_event (widget, event);
+}
+
+static gboolean
+hinted_entry_focus_out_event (GtkWidget *widget,
+ GdkEventFocus *event)
+{
+ EHintedEntry *entry = E_HINTED_ENTRY (widget);
+ const gchar *text;
+
+ text = e_hinted_entry_get_text (entry);
+
+ if (text == NULL || *text == '\0')
+ hinted_entry_show_hint (E_HINTED_ENTRY (widget));
+
+ /* Chain up to parent's focus_out_event() method. */
+ return GTK_WIDGET_CLASS (parent_class)->
+ focus_out_event (widget, event);
+}
+
+static void
+hinted_entry_class_init (EHintedEntryClass *class)
+{
+ GObjectClass *object_class;
+ GtkWidgetClass *widget_class;
+
+ parent_class = g_type_class_peek_parent (class);
+ g_type_class_add_private (class, sizeof (EHintedEntryPrivate));
+
+ object_class = G_OBJECT_CLASS (class);
+ object_class->set_property = hinted_entry_set_property;
+ object_class->get_property = hinted_entry_get_property;
+ object_class->finalize = hinted_entry_finalize;
+
+ widget_class = GTK_WIDGET_CLASS (class);
+ widget_class->focus_in_event = hinted_entry_focus_in_event;
+ widget_class->focus_out_event = hinted_entry_focus_out_event;
+
+ g_object_class_install_property (
+ object_class,
+ PROP_HINT,
+ g_param_spec_string (
+ "hint",
+ "Hint",
+ NULL,
+ NULL,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ object_class,
+ PROP_HINT_SHOWN,
+ g_param_spec_boolean (
+ "hint-shown",
+ "Hint Shown",
+ NULL,
+ FALSE,
+ G_PARAM_READABLE));
+}
+
+static void
+hinted_entry_init (EHintedEntry *entry)
+{
+ entry->priv = E_HINTED_ENTRY_GET_PRIVATE (entry);
+ entry->priv->hint = g_strdup (""); /* hint must never be NULL */
+}
+
+GType
+e_hinted_entry_get_type (void)
+{
+ static GType type = 0;
+
+ if (G_UNLIKELY (type == 0)) {
+ static const GTypeInfo type_info = {
+ sizeof (EHintedEntryClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) hinted_entry_class_init,
+ (GClassFinalizeFunc) NULL,
+ NULL, /* class_data */
+ sizeof (EHintedEntry),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) hinted_entry_init,
+ NULL /* value_table */
+ };
+
+ type = g_type_register_static (
+ GTK_TYPE_ENTRY, "EHintedEntry", &type_info, 0);
+ }
+
+ return type;
+}
+
+GtkWidget *
+e_hinted_entry_new (void)
+{
+ return g_object_new (E_TYPE_HINTED_ENTRY, NULL);
+}
+
+const gchar *
+e_hinted_entry_get_hint (EHintedEntry *entry)
+{
+ g_return_val_if_fail (E_IS_HINTED_ENTRY (entry), NULL);
+
+ return entry->priv->hint;
+}
+
+void
+e_hinted_entry_set_hint (EHintedEntry *entry,
+ const gchar *hint)
+{
+ g_return_if_fail (E_IS_HINTED_ENTRY (entry));
+
+ if (hint == NULL)
+ hint = "";
+
+ g_free (entry->priv->hint);
+ entry->priv->hint = g_strdup (hint);
+
+ if (e_hinted_entry_get_hint_shown (entry))
+ gtk_entry_set_text (GTK_ENTRY (entry), hint);
+
+ g_object_notify (G_OBJECT (entry), "hint");
+}
+
+gboolean
+e_hinted_entry_get_hint_shown (EHintedEntry *entry)
+{
+ g_return_val_if_fail (E_IS_HINTED_ENTRY (entry), FALSE);
+
+ return entry->priv->hint_shown;
+}
+
+const gchar *
+e_hinted_entry_get_text (EHintedEntry *entry)
+{
+ /* XXX This clumsily overrides gtk_entry_get_text(). */
+
+ g_return_val_if_fail (E_IS_HINTED_ENTRY (entry), NULL);
+
+ if (e_hinted_entry_get_hint_shown (entry))
+ return "";
+
+ return gtk_entry_get_text (GTK_ENTRY (entry));
+}
+
+void
+e_hinted_entry_set_text (EHintedEntry *entry,
+ const gchar *text)
+{
+ /* XXX This clumsily overrides gtk_entry_set_text(). */
+
+ g_return_if_fail (E_IS_HINTED_ENTRY (entry));
+
+ if (text == NULL)
+ text = "";
+
+ if (*text == '\0' && !GTK_WIDGET_HAS_FOCUS (entry))
+ hinted_entry_show_hint (entry);
+ else {
+ hinted_entry_hide_hint (entry);
+ gtk_entry_set_text (GTK_ENTRY (entry), text);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 22:31:29 +0800