[accounts-dialog/control-center-panel: 7/15] Extract the editable label as a separate widget

[Matthias Clasen <matthiasc src gnome org>]

commit f1ce0f87c693f5e16b15024328309896a7047640
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jun 13 16:47:40 2010 -0400

    Extract the editable label as a separate widget
    
    This removes a ton of code duplication and makes things
    easier to read.

 src/um-editable-button.c |  451 ++++++++++++++++++++++++++++++++++++++++++++++
 src/um-editable-button.h |   70 +++++++
 2 files changed, 521 insertions(+), 0 deletions(-)
---
diff --git a/src/um-editable-button.c b/src/um-editable-button.c
new file mode 100644
index 0000000..06a33e3
--- /dev/null
+++ b/src/um-editable-button.c
@@ -0,0 +1,451 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright 2009-2010  Red Hat, Inc,
+ *
+ * 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 3 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Written by: Matthias Clasen <mclasen redhat com>
+ */
+
+#include <gdk/gdkkeysyms.h>
+#include "um-editable-button.h"
+
+#define EMPTY_TEXT "\xe2\x80\x94"
+
+struct _UmEditableButtonPrivate {
+        GtkNotebook *notebook;
+        GtkLabel    *label;
+        GtkButton   *button;
+        GtkEntry    *entry;
+
+        gchar *text;
+        gboolean editable;
+        gint weight;
+        gboolean weight_set;
+        gdouble scale;
+        gboolean scale_set;
+};
+
+#define UM_EDITABLE_BUTTON_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), UM_TYPE_EDITABLE_BUTTON, UmEditableButtonPrivate))
+
+enum {
+        PROP_0,
+        PROP_TEXT,
+        PROP_EDITABLE,
+        PROP_SCALE,
+        PROP_SCALE_SET,
+        PROP_WEIGHT,
+        PROP_WEIGHT_SET
+};
+
+G_DEFINE_TYPE (UmEditableButton, um_editable_button, GTK_TYPE_ALIGNMENT);
+
+void
+um_editable_button_set_text (UmEditableButton *button,
+                             const gchar      *text)
+{
+        UmEditableButtonPrivate *priv;
+        gchar *tmp;
+        GtkWidget *label;
+
+        priv = button->priv;
+
+        tmp = g_strdup (text);
+        g_free (priv->text);
+        priv->text = tmp;
+
+        gtk_entry_set_text (priv->entry, tmp);
+
+        if (tmp == NULL || tmp[0] == '\0')
+                tmp = EMPTY_TEXT;
+
+        gtk_label_set_text (priv->label, tmp);
+        label = gtk_bin_get_child (GTK_BIN (priv->button));
+        gtk_label_set_text (GTK_LABEL (label), tmp);
+
+        g_object_notify (G_OBJECT (button), "text");
+}
+
+const gchar *
+um_editable_button_get_text (UmEditableButton *button)
+{
+        return button->priv->text;
+}
+
+void
+um_editable_button_set_editable (UmEditableButton *button,
+                                 gboolean          editable)
+{
+        UmEditableButtonPrivate *priv;
+
+        priv = button->priv;
+
+        if (priv->editable != editable) {
+                priv->editable = editable;
+
+                gtk_notebook_set_current_page (priv->notebook, editable ? 1 : 0);
+
+                g_object_notify (G_OBJECT (button), "editable");
+        }
+}
+
+gboolean
+um_editable_button_get_editable (UmEditableButton *button)
+{
+        return button->priv->editable;
+}
+
+static void
+update_entry_font (GtkWidget        *widget,
+                   GtkStyle         *previous_style,
+                   UmEditableButton *button)
+{
+        UmEditableButtonPrivate *priv = button->priv;
+        PangoFontDescription *desc;
+        gint size;
+
+        if (!priv->weight_set && !priv->scale_set)
+                return;
+
+        desc = pango_font_description_copy (widget->style->font_desc);
+        if (priv->weight_set)
+                pango_font_description_set_weight (desc, priv->weight);
+        if (priv->scale_set) {
+                size = pango_font_description_get_size (desc);
+                pango_font_description_set_size (desc, priv->scale * size);
+        }
+        g_signal_handlers_block_by_func (widget, update_entry_font, button);
+        gtk_widget_modify_font (widget, desc);
+        g_signal_handlers_unblock_by_func (widget, update_entry_font, button);
+
+        pango_font_description_free (desc);
+}
+
+static void
+update_fonts (UmEditableButton *button)
+{
+        PangoAttrList *attrs;
+        PangoAttribute *attr;
+        GtkWidget *label;
+
+        UmEditableButtonPrivate *priv = button->priv;
+
+        attrs = pango_attr_list_new ();
+        if (priv->scale_set) {
+                attr = pango_attr_scale_new (priv->scale);
+                pango_attr_list_insert (attrs, attr);
+        }
+        if (priv->weight_set) {
+                attr = pango_attr_weight_new (priv->weight);
+                pango_attr_list_insert (attrs, attr);
+        }
+
+        gtk_label_set_attributes (priv->label, attrs);
+
+        label = gtk_bin_get_child (GTK_BIN (priv->button));
+        gtk_label_set_attributes (GTK_LABEL (label), attrs);
+
+        pango_attr_list_unref (attrs);
+
+        update_entry_font ((GtkWidget *)priv->entry, NULL, button);
+}
+
+void
+um_editable_button_set_weight (UmEditableButton *button,
+                               gint              weight)
+{
+        UmEditableButtonPrivate *priv = button->priv;
+
+        if (priv->weight == weight && priv->weight_set)
+                return;
+
+        priv->weight = weight;
+        priv->weight_set = TRUE;
+
+        update_fonts (button);
+
+        g_object_notify (G_OBJECT (button), "weight");
+        g_object_notify (G_OBJECT (button), "weight-set");
+}
+
+gint
+um_editable_button_get_weight (UmEditableButton *button)
+{
+        return button->priv->weight;
+}
+
+void
+um_editable_button_set_scale (UmEditableButton *button,
+                              gdouble           scale)
+{
+        UmEditableButtonPrivate *priv = button->priv;
+
+        if (priv->scale == scale && priv->scale_set)
+                return;
+
+        priv->scale = scale;
+        priv->scale_set = TRUE;
+
+        update_fonts (button);
+
+        g_object_notify (G_OBJECT (button), "scale");
+        g_object_notify (G_OBJECT (button), "scale-set");
+}
+
+gdouble
+um_editable_button_get_scale (UmEditableButton *button)
+{
+        button->priv->scale;
+}
+
+static void
+um_editable_button_set_property (GObject      *object,
+                                 guint         prop_id,
+                                 const GValue *value,
+                                 GParamSpec   *pspec)
+{
+        UmEditableButton *button = UM_EDITABLE_BUTTON (object);
+
+        switch (prop_id) {
+        case PROP_TEXT:
+                um_editable_button_set_text (button, g_value_get_string (value));
+                break;
+        case PROP_EDITABLE:
+                um_editable_button_set_editable (button, g_value_get_boolean (value));
+                break;
+        case PROP_WEIGHT:
+                um_editable_button_set_weight (button, g_value_get_int (value));
+                break;
+        case PROP_WEIGHT_SET:
+                button->priv->weight_set = g_value_get_boolean (value);
+                break;
+        case PROP_SCALE:
+                um_editable_button_set_scale (button, g_value_get_double (value));
+                break;
+        case PROP_SCALE_SET:
+                button->priv->scale_set = g_value_get_boolean (value);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+um_editable_button_get_property (GObject    *object,
+                                 guint       prop_id,
+                                 GValue     *value,
+                                 GParamSpec *pspec)
+{
+        UmEditableButton *button = UM_EDITABLE_BUTTON (object);
+
+        switch (prop_id) {
+        case PROP_TEXT:
+                g_value_set_string (value,
+                                    um_editable_button_get_text (button));
+                break;
+        case PROP_EDITABLE:
+                g_value_set_boolean (value,
+                                     um_editable_button_get_editable (button));
+                break;
+        case PROP_WEIGHT:
+                g_value_set_int (value,
+                                 um_editable_button_get_weight (button));
+                break;
+        case PROP_WEIGHT_SET:
+                g_value_set_boolean (value,
+                                     button->priv->weight_set);
+                break;
+        case PROP_SCALE:
+                g_value_set_double (value,
+                                    um_editable_button_get_scale (button));
+                break;
+        case PROP_SCALE_SET:
+                g_value_set_boolean (value,
+                                     button->priv->scale_set);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+um_editable_button_finalize (GObject *object)
+{
+        UmEditableButton *button = (UmEditableButton*)object;
+
+        g_free (button->priv->text);
+
+        G_OBJECT_CLASS (um_editable_button_parent_class)->finalize (object);
+}
+
+static void
+um_editable_button_class_init (UmEditableButtonClass *class)
+{
+        GObjectClass *object_class;
+
+        object_class = G_OBJECT_CLASS (class);
+
+        object_class->set_property = um_editable_button_set_property;
+        object_class->get_property = um_editable_button_get_property;
+        object_class->finalize = um_editable_button_finalize;
+
+        g_object_class_install_property (object_class, PROP_TEXT,
+                g_param_spec_string ("text",
+                                     "Text", "The text of the button",
+                                     NULL,
+                                     G_PARAM_READWRITE));
+
+        g_object_class_install_property (object_class, PROP_EDITABLE,
+                g_param_spec_boolean ("editable",
+                                      "Editable", "Whether the text can be edited",
+                                      FALSE,
+                                      G_PARAM_READWRITE));
+
+        g_object_class_install_property (object_class, PROP_WEIGHT,
+                g_param_spec_int ("weight",
+                                  "Font Weight", "The font weight to use",
+                                  0, G_MAXINT, PANGO_WEIGHT_NORMAL,
+                                  G_PARAM_READWRITE));
+
+        g_object_class_install_property (object_class, PROP_WEIGHT_SET,
+                g_param_spec_boolean ("weight-set",
+                                      "Font Weight Set", "Whether a font weight is set",
+                                      FALSE,
+                                      G_PARAM_READWRITE));
+
+        g_object_class_install_property (object_class, PROP_SCALE,
+                g_param_spec_double ("scale",
+                                     "Font Scale", "The font scale to use",
+                                     0.0, G_MAXDOUBLE, 1.0,
+                                     G_PARAM_READWRITE));
+
+        g_object_class_install_property (object_class, PROP_SCALE_SET,
+                g_param_spec_boolean ("scale-set",
+                                      "Font Scale Set", "Whether a font scale is set",
+                                      FALSE,
+                                      G_PARAM_READWRITE));
+
+        g_type_class_add_private (class, sizeof (UmEditableButtonPrivate));
+}
+
+static void
+start_editing (UmEditableButton *button)
+{
+        gtk_notebook_set_current_page (button->priv->notebook, 2);
+}
+
+static void
+stop_editing (UmEditableButton *button)
+{
+        um_editable_button_set_text (button,
+                                     gtk_entry_get_text (button->priv->entry));
+        gtk_notebook_set_current_page (button->priv->notebook, 1);
+}
+
+static void
+cancel_editing (UmEditableButton *button)
+{
+        gtk_entry_set_text (button->priv->entry,
+                            um_editable_button_get_text (button));
+        gtk_notebook_set_current_page (button->priv->notebook, 1);
+}
+
+static void
+button_clicked (GtkWidget        *widget,
+                UmEditableButton *button)
+{
+        start_editing (button);
+}
+
+static void
+entry_activated (GtkWidget        *widget,
+                 UmEditableButton *button)
+{
+        stop_editing (button);
+}
+
+static gboolean
+entry_focus_out (GtkWidget        *widget,
+                 GdkEventFocus    *event,
+                 UmEditableButton *button)
+{
+        stop_editing (button);
+        return FALSE;
+}
+
+static gboolean
+entry_key_press (GtkWidget        *widget,
+                 GdkEventKey      *event,
+                 UmEditableButton *button)
+{
+        if (event->keyval == GDK_Escape)
+                cancel_editing (button);
+        return FALSE;
+}
+
+static void
+um_editable_button_init (UmEditableButton *button)
+{
+        UmEditableButtonPrivate *priv;
+
+        priv = button->priv = UM_EDITABLE_BUTTON_GET_PRIVATE (button);
+
+        priv->weight = PANGO_WEIGHT_NORMAL;
+        priv->weight_set = FALSE;
+        priv->scale = 1.0;
+        priv->scale_set = FALSE;
+
+        priv->notebook = (GtkNotebook*)gtk_notebook_new ();
+        gtk_notebook_set_show_tabs (priv->notebook, FALSE);
+        gtk_notebook_set_show_border (priv->notebook, FALSE);
+
+        priv->label = (GtkLabel*)gtk_label_new (EMPTY_TEXT);
+        gtk_misc_set_alignment (GTK_MISC (priv->label), 0.0, 0.5);
+        gtk_notebook_append_page (priv->notebook, (GtkWidget*)priv->label, NULL);
+
+        priv->button = (GtkButton*)gtk_button_new_with_label (EMPTY_TEXT);
+        gtk_widget_set_receives_default ((GtkWidget*)priv->button, TRUE);
+        gtk_button_set_relief (priv->button, GTK_RELIEF_NONE);
+        gtk_button_set_alignment (priv->button, 0.0, 0.5);
+        gtk_notebook_append_page (priv->notebook, (GtkWidget*)priv->button, NULL);
+        g_signal_connect (priv->button, "clicked", G_CALLBACK (button_clicked), button);
+
+        priv->entry = (GtkEntry*)gtk_entry_new ();
+        gtk_notebook_append_page (priv->notebook, (GtkWidget*)priv->entry, NULL);
+
+        g_signal_connect (priv->entry, "activate", G_CALLBACK (entry_activated), button);
+        g_signal_connect (priv->entry, "focus-out-event", G_CALLBACK (entry_focus_out), button);
+        g_signal_connect (priv->entry, "key-press-event", G_CALLBACK (entry_key_press), button);
+        g_signal_connect (priv->entry, "style-set", G_CALLBACK (update_entry_font), button);
+
+        gtk_container_add (GTK_CONTAINER (button), (GtkWidget*)priv->notebook);
+
+        gtk_widget_show ((GtkWidget*)priv->notebook);
+        gtk_widget_show ((GtkWidget*)priv->label);
+        gtk_widget_show ((GtkWidget*)priv->button);
+        gtk_widget_show ((GtkWidget*)priv->entry);
+
+        gtk_notebook_set_current_page (priv->notebook, 0);
+}
+
+GtkWidget *
+um_editable_button_new (void)
+{
+        return (GtkWidget *) g_object_new (UM_TYPE_EDITABLE_BUTTON, NULL);
+}
+
+
diff --git a/src/um-editable-button.h b/src/um-editable-button.h
new file mode 100644
index 0000000..7e8d4f9
--- /dev/null
+++ b/src/um-editable-button.h
@@ -0,0 +1,70 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright 2009-2010  Red Hat, Inc,
+ *
+ * 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 3 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Written by: Matthias Clasen <mclasen redhat com>
+ */
+
+#ifndef _UM_EDITABLE_BUTTON_H
+#define _UM_EDITABLE_BUTTON_H
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define UM_TYPE_EDITABLE_BUTTON  um_editable_button_get_type()
+
+#define UM_EDITABLE_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), UM_TYPE_EDITABLE_BUTTON, UmEditableButton))
+#define UM_EDITABLE_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), UM_TYPE_EDITABLE_BUTTON, UmEditableButtonClass))
+#define UM_IS_EDITABLE_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), UM_TYPE_EDITABLE_BUTTON))
+#define UM_IS_EDITABLE_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), UM_TYPE_EDITABLE_BUTTON))
+#define UM_EDITABLE_BUTTON_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), UM_TYPE_EDITABLE_BUTTON, UmEditableButtonClass))
+
+typedef struct _UmEditableButton UmEditableButton;
+typedef struct _UmEditableButtonClass UmEditableButtonClass;
+typedef struct _UmEditableButtonPrivate UmEditableButtonPrivate;
+
+struct _UmEditableButton
+{
+  GtkAlignment parent;
+
+  UmEditableButtonPrivate *priv;
+};
+
+struct _UmEditableButtonClass
+{
+  GtkAlignmentClass parent_class;
+};
+
+GType        um_editable_button_get_type     (void) G_GNUC_CONST;
+GtkWidget   *um_editable_button_new          (void);
+void         um_editable_button_set_text     (UmEditableButton *button,
+                                              const gchar      *text);
+const gchar *um_editable_button_get_text     (UmEditableButton *button);
+void         um_editable_button_set_editable (UmEditableButton *button,
+                                              gboolean          editable);
+gboolean     um_editable_button_get_editable (UmEditableButton *button);
+void         um_editable_button_set_weight   (UmEditableButton *button,
+                                              gint              weight);
+gint         um_editable_button_get_weight   (UmEditableButton *button);
+void         um_editable_button_set_scale    (UmEditableButton *button,
+                                              gdouble           scale);
+gdouble      um_editable_button_get_scale    (UmEditableButton *button);
+
+G_END_DECLS
+
+#endif /* _UM_EDITABLE_BUTTON_H_ */