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[libadwaita/wip/exalm/demo-cleanups: 5/21] demo: Split leaflet page into a separate class


commit d6e6e861072face0acaa6bee01fee6b901720889
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Dec 9 15:47:01 2021 +0500

    demo: Split leaflet page into a separate class

 demo/adw-demo-window.c                      |  41 +---------
 demo/adw-demo-window.ui                     |  46 +----------
 demo/adwaita-demo.gresources.xml            |   1 +
 demo/meson.build                            |   1 +
 demo/pages/leaflet/adw-demo-page-leaflet.c  | 121 ++++++++++++++++++++++++++++
 demo/pages/leaflet/adw-demo-page-leaflet.h  |  11 +++
 demo/pages/leaflet/adw-demo-page-leaflet.ui |  50 ++++++++++++
 7 files changed, 192 insertions(+), 79 deletions(-)
---
diff --git a/demo/adw-demo-window.c b/demo/adw-demo-window.c
index 19eff01e..f33def5d 100644
--- a/demo/adw-demo-window.c
+++ b/demo/adw-demo-window.c
@@ -1,6 +1,7 @@
 #include "adw-demo-window.h"
 
 #include <glib/gi18n.h>
+#include "pages/leaflet/adw-demo-page-leaflet.h"
 #include "pages/welcome/adw-demo-page-welcome.h"
 #include "adw-flap-demo-window.h"
 #include "adw-style-demo-window.h"
@@ -17,7 +18,6 @@ struct _AdwDemoWindow
   GtkWidget *color_scheme_button;
   GtkStackSidebar *sidebar;
   GtkStack *stack;
-  AdwComboRow *leaflet_transition_row;
   AdwLeaflet *subpage_leaflet;
   AdwCarousel *carousel;
   GtkBox *carousel_box;
@@ -155,40 +155,9 @@ leaflet_back_clicked_cb (GtkWidget     *sender,
   adw_leaflet_navigate (self->subpage_leaflet, ADW_NAVIGATION_DIRECTION_BACK);
 }
 
-static char *
-leaflet_transition_name (AdwEnumListItem *item,
-                         gpointer         user_data)
-{
-  switch (adw_enum_list_item_get_value (item)) {
-  case ADW_LEAFLET_TRANSITION_TYPE_OVER:
-    return g_strdup (_("Over"));
-  case ADW_LEAFLET_TRANSITION_TYPE_UNDER:
-    return g_strdup (_("Under"));
-  case ADW_LEAFLET_TRANSITION_TYPE_SLIDE:
-    return g_strdup (_("Slide"));
-  default:
-    return NULL;
-  }
-}
-
 static void
-notify_leaflet_transition_cb (GObject       *sender,
-                              GParamSpec    *pspec,
-                              AdwDemoWindow *self)
+leaflet_next_page_cb (AdwDemoWindow *self)
 {
-  AdwComboRow *row = ADW_COMBO_ROW (sender);
-
-  g_assert (ADW_IS_COMBO_ROW (row));
-  g_assert (ADW_IS_DEMO_WINDOW (self));
-
-  adw_leaflet_set_transition_type (ADW_LEAFLET (self->content_box), adw_combo_row_get_selected (row));
-}
-
-static void
-leaflet_go_next_row_activated_cb (AdwDemoWindow *self)
-{
-  g_assert (ADW_IS_DEMO_WINDOW (self));
-
   adw_leaflet_navigate (self->subpage_leaflet, ADW_NAVIGATION_DIRECTION_FORWARD);
 }
 
@@ -790,7 +759,6 @@ adw_demo_window_class_init (AdwDemoWindowClass *klass)
   gtk_widget_class_bind_template_child (widget_class, AdwDemoWindow, color_scheme_button);
   gtk_widget_class_bind_template_child (widget_class, AdwDemoWindow, sidebar);
   gtk_widget_class_bind_template_child (widget_class, AdwDemoWindow, stack);
-  gtk_widget_class_bind_template_child (widget_class, AdwDemoWindow, leaflet_transition_row);
   gtk_widget_class_bind_template_child (widget_class, AdwDemoWindow, subpage_leaflet);
   gtk_widget_class_bind_template_child (widget_class, AdwDemoWindow, carousel);
   gtk_widget_class_bind_template_child (widget_class, AdwDemoWindow, carousel_box);
@@ -818,9 +786,7 @@ adw_demo_window_class_init (AdwDemoWindowClass *klass)
   gtk_widget_class_bind_template_callback (widget_class, notify_visible_child_cb);
   gtk_widget_class_bind_template_callback (widget_class, back_clicked_cb);
   gtk_widget_class_bind_template_callback (widget_class, leaflet_back_clicked_cb);
-  gtk_widget_class_bind_template_callback (widget_class, leaflet_transition_name);
-  gtk_widget_class_bind_template_callback (widget_class, notify_leaflet_transition_cb);
-  gtk_widget_class_bind_template_callback (widget_class, leaflet_go_next_row_activated_cb);
+  gtk_widget_class_bind_template_callback (widget_class, leaflet_next_page_cb);
   gtk_widget_class_bind_template_callback (widget_class, get_color_scheme_icon_name);
   gtk_widget_class_bind_template_callback (widget_class, color_scheme_button_clicked_cb);
   gtk_widget_class_bind_template_callback (widget_class, view_switcher_demo_clicked_cb);
@@ -955,6 +921,7 @@ adw_demo_window_init (AdwDemoWindow *self)
 {
   AdwStyleManager *manager = adw_style_manager_get_default ();
 
+  g_type_ensure (ADW_TYPE_DEMO_PAGE_LEAFLET);
   g_type_ensure (ADW_TYPE_DEMO_PAGE_WELCOME);
 
   gtk_widget_init_template (GTK_WIDGET (self));
diff --git a/demo/adw-demo-window.ui b/demo/adw-demo-window.ui
index 9a95834f..59c11b0b 100644
--- a/demo/adw-demo-window.ui
+++ b/demo/adw-demo-window.ui
@@ -45,10 +45,11 @@
             <property name="can-navigate-back">True</property>
             <property name="width-request">360</property>
             <property name="can-unfold">False</property>
-            <property name="transition-type" bind-source="content_box" bind-property="transition-type" 
bind-flags="sync-create"/>
+            <property name="transition-type" bind-source="leaflet_page" bind-property="transition-type" 
bind-flags="sync-create|bidirectional"/>
             <child>
               <object class="AdwLeaflet" id="content_box">
                 <property name="can-navigate-back">True</property>
+                <property name="transition-type" bind-source="leaflet_page" bind-property="transition-type" 
bind-flags="sync-create|bidirectional"/>
                 <child>
                   <object class="GtkBox">
                     <property name="orientation">vertical</property>
@@ -130,49 +131,10 @@
                         </child>
                         <child>
                           <object class="GtkStackPage">
-                            <property name="name">leaflet</property>
                             <property name="title" translatable="yes">Leaflet</property>
                             <property name="child">
-                              <object class="AdwStatusPage">
-                                <property name="icon-name">widget-leaflet-symbolic</property>
-                                <property name="title" translatable="yes">Leaflet</property>
-                                <property name="description" translatable="yes">A widget showing either all 
its children or only one, depending on the available space. This window is using a leaflet, you can control 
it with the settings below.</property>
-                                <property name="child">
-                                  <object class="AdwClamp">
-                                    <property name="child">
-                                      <object class="AdwPreferencesGroup">
-                                        <child>
-                                          <object class="AdwComboRow" id="leaflet_transition_row">
-                                            <property name="subtitle" translatable="yes">The type of 
transition to use when the leaflet adapts its size or when changing the visible child</property>
-                                            <property name="title" translatable="yes">Transition 
Type</property>
-                                            <signal name="notify::selected" 
handler="notify_leaflet_transition_cb" swapped="no"/>
-                                            <property name="model">
-                                              <object class="AdwEnumListModel">
-                                                <property 
name="enum-type">AdwLeafletTransitionType</property>
-                                              </object>
-                                            </property>
-                                            <property name="expression">
-                                              <closure type="gchararray" function="leaflet_transition_name"/>
-                                            </property>
-                                          </object>
-                                        </child>
-                                        <child>
-                                          <object class="AdwActionRow">
-                                            <property name="title" translatable="yes">Go to the next page of 
the leaflet</property>
-                                            <property name="use_underline">True</property>
-                                            <property name="activatable">True</property>
-                                            <signal name="activated" 
handler="leaflet_go_next_row_activated_cb" swapped="yes"/>
-                                            <child>
-                                              <object class="GtkImage">
-                                                <property name="icon_name">go-next-symbolic</property>
-                                              </object>
-                                            </child>
-                                          </object>
-                                        </child>
-                                      </object>
-                                    </property>
-                                  </object>
-                                </property>
+                              <object class="AdwDemoPageLeaflet" id="leaflet_page">
+                                <signal name="next-page" handler="leaflet_next_page_cb" swapped="yes"/>
                               </object>
                             </property>
                           </object>
diff --git a/demo/adwaita-demo.gresources.xml b/demo/adwaita-demo.gresources.xml
index 62730f1e..a0eec955 100644
--- a/demo/adwaita-demo.gresources.xml
+++ b/demo/adwaita-demo.gresources.xml
@@ -41,6 +41,7 @@
     <file compressed="true">style-dark.css</file>
   </gresource>
   <gresource prefix="/org/gnome/Adwaita1/Demo/ui">
+    <file preprocess="xml-stripblanks">pages/leaflet/adw-demo-page-leaflet.ui</file>
     <file preprocess="xml-stripblanks">pages/welcome/adw-demo-page-welcome.ui</file>
     <file preprocess="xml-stripblanks">adw-demo-preferences-window.ui</file>
     <file preprocess="xml-stripblanks">adw-demo-window.ui</file>
diff --git a/demo/meson.build b/demo/meson.build
index e6d89269..99475e99 100644
--- a/demo/meson.build
+++ b/demo/meson.build
@@ -12,6 +12,7 @@ adwaita_demo_resources = gnome.compile_resources(
 adwaita_demo_sources = [
   adwaita_demo_resources,
 
+  'pages/leaflet/adw-demo-page-leaflet.c',
   'pages/welcome/adw-demo-page-welcome.c',
 
   'adwaita-demo.c',
diff --git a/demo/pages/leaflet/adw-demo-page-leaflet.c b/demo/pages/leaflet/adw-demo-page-leaflet.c
new file mode 100644
index 00000000..56cd07bd
--- /dev/null
+++ b/demo/pages/leaflet/adw-demo-page-leaflet.c
@@ -0,0 +1,121 @@
+#include "adw-demo-page-leaflet.h"
+
+#include <glib/gi18n.h>
+
+struct _AdwDemoPageLeaflet
+{
+  AdwBin parent_instance;
+
+  AdwLeafletTransitionType transition_type;
+};
+
+enum {
+  PROP_0,
+  PROP_TRANSITION_TYPE,
+  LAST_PROP,
+};
+
+static GParamSpec *props[LAST_PROP];
+
+enum {
+  SIGNAL_NEXT_PAGE,
+  SIGNAL_LAST_SIGNAL,
+};
+
+static guint signals[SIGNAL_LAST_SIGNAL];
+
+G_DEFINE_TYPE (AdwDemoPageLeaflet, adw_demo_page_leaflet, ADW_TYPE_BIN)
+
+static char *
+get_transition_name (AdwEnumListItem *item,
+                     gpointer         user_data)
+{
+  switch (adw_enum_list_item_get_value (item)) {
+  case ADW_LEAFLET_TRANSITION_TYPE_OVER:
+    return g_strdup (_("Over"));
+  case ADW_LEAFLET_TRANSITION_TYPE_UNDER:
+    return g_strdup (_("Under"));
+  case ADW_LEAFLET_TRANSITION_TYPE_SLIDE:
+    return g_strdup (_("Slide"));
+  default:
+    return NULL;
+  }
+}
+
+static void
+next_row_activated_cb (AdwDemoPageLeaflet *self)
+{
+  g_signal_emit (self, signals[SIGNAL_NEXT_PAGE], 0);
+}
+
+static void
+adw_demo_page_leaflet_get_property (GObject    *object,
+                                    guint       prop_id,
+                                    GValue     *value,
+                                    GParamSpec *pspec)
+{
+  AdwDemoPageLeaflet *self = ADW_DEMO_PAGE_LEAFLET (object);
+
+  switch (prop_id) {
+  case PROP_TRANSITION_TYPE:
+    g_value_set_enum (value, self->transition_type);
+    break;
+  default:
+    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+  }
+}
+
+static void
+adw_demo_page_leaflet_set_property (GObject      *object,
+                                    guint         prop_id,
+                                    const GValue *value,
+                                    GParamSpec   *pspec)
+{
+  AdwDemoPageLeaflet *self = ADW_DEMO_PAGE_LEAFLET (object);
+
+  switch (prop_id) {
+  case PROP_TRANSITION_TYPE:
+    self->transition_type = g_value_get_enum (value);
+    break;
+  default:
+    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+  }
+}
+
+static void
+adw_demo_page_leaflet_class_init (AdwDemoPageLeafletClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->get_property = adw_demo_page_leaflet_get_property;
+  object_class->set_property = adw_demo_page_leaflet_set_property;
+
+  props[PROP_TRANSITION_TYPE] =
+    g_param_spec_enum ("transition-type",
+                       "Transition type",
+                       "Transition type",
+                       ADW_TYPE_LEAFLET_TRANSITION_TYPE,
+                       ADW_LEAFLET_TRANSITION_TYPE_OVER,
+                       G_PARAM_READWRITE);
+
+  g_object_class_install_properties (object_class, LAST_PROP, props);
+
+  signals[SIGNAL_NEXT_PAGE] =
+    g_signal_new ("next-page",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  0,
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE, 0);
+
+  gtk_widget_class_set_template_from_resource (widget_class, 
"/org/gnome/Adwaita1/Demo/ui/pages/leaflet/adw-demo-page-leaflet.ui");
+  gtk_widget_class_bind_template_callback (widget_class, get_transition_name);
+  gtk_widget_class_bind_template_callback (widget_class, next_row_activated_cb);
+}
+
+static void
+adw_demo_page_leaflet_init (AdwDemoPageLeaflet *self)
+{
+  gtk_widget_init_template (GTK_WIDGET (self));
+}
diff --git a/demo/pages/leaflet/adw-demo-page-leaflet.h b/demo/pages/leaflet/adw-demo-page-leaflet.h
new file mode 100644
index 00000000..66e90168
--- /dev/null
+++ b/demo/pages/leaflet/adw-demo-page-leaflet.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <adwaita.h>
+
+G_BEGIN_DECLS
+
+#define ADW_TYPE_DEMO_PAGE_LEAFLET (adw_demo_page_leaflet_get_type())
+
+G_DECLARE_FINAL_TYPE (AdwDemoPageLeaflet, adw_demo_page_leaflet, ADW, DEMO_PAGE_LEAFLET, AdwBin)
+
+G_END_DECLS
diff --git a/demo/pages/leaflet/adw-demo-page-leaflet.ui b/demo/pages/leaflet/adw-demo-page-leaflet.ui
new file mode 100644
index 00000000..d6a47d16
--- /dev/null
+++ b/demo/pages/leaflet/adw-demo-page-leaflet.ui
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk" version="4.0"/>
+  <requires lib="libadwaita" version="1.0"/>
+  <template class="AdwDemoPageLeaflet" parent="AdwBin">
+    <property name="child">
+      <object class="AdwStatusPage">
+        <property name="icon-name">widget-leaflet-symbolic</property>
+        <property name="title" translatable="yes">Leaflet</property>
+        <property name="description" translatable="yes">A widget showing either all its children or only 
one, depending on the available space. This window is using a leaflet, you can control it with the settings 
below.</property>
+        <property name="child">
+          <object class="AdwClamp">
+            <property name="child">
+              <object class="AdwPreferencesGroup">
+                <child>
+                  <object class="AdwComboRow" id="transition_row">
+                    <property name="subtitle" translatable="yes">The type of transition to use when the 
leaflet adapts its size or when changing the visible child</property>
+                    <property name="title" translatable="yes">Transition Type</property>
+                    <property name="selected" bind-source="AdwDemoPageLeaflet" 
bind-property="transition-type" bind-flags="bidirectional|sync-create"/>
+                    <property name="model">
+                      <object class="AdwEnumListModel">
+                        <property name="enum-type">AdwLeafletTransitionType</property>
+                      </object>
+                    </property>
+                    <property name="expression">
+                      <closure type="gchararray" function="get_transition_name"/>
+                    </property>
+                  </object>
+                </child>
+                <child>
+                  <object class="AdwActionRow">
+                    <property name="title" translatable="yes">Go to the next page of the leaflet</property>
+                    <property name="use_underline">True</property>
+                    <property name="activatable">True</property>
+                    <signal name="activated" handler="next_row_activated_cb" swapped="yes"/>
+                    <child>
+                      <object class="GtkImage">
+                        <property name="icon_name">go-next-symbolic</property>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </property>
+          </object>
+        </property>
+      </object>
+    </property>
+  </template>
+</interface>
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