[sysprof/wip/chergert/sysprof-3] libsysprof-ui: start on open support

[Christian Hergert <chergert src gnome org>]

commit fbf98c3cb35588f62740b5c46fe0dd70f1898b5b
Author: Christian Hergert <chergert redhat com>
Date:   Thu May 16 00:54:06 2019 -0700

    libsysprof-ui: start on open support

 src/libsysprof-ui/sysprof-display.c     | 132 +++++++++++++++++++++++++++++++-
 src/libsysprof-ui/sysprof-display.h     |  10 ++-
 src/libsysprof-ui/sysprof-notebook.c    |  51 ++++++++++++
 src/libsysprof-ui/sysprof-notebook.h    |   3 +
 src/libsysprof-ui/ui/sysprof-display.ui |  11 +++
 src/sysprof/sysprof-window.c            |  40 +++++++++-
 6 files changed, 242 insertions(+), 5 deletions(-)
---
diff --git a/src/libsysprof-ui/sysprof-display.c b/src/libsysprof-ui/sysprof-display.c
index 1a90c86..ff263af 100644
--- a/src/libsysprof-ui/sysprof-display.c
+++ b/src/libsysprof-ui/sysprof-display.c
@@ -35,9 +35,15 @@
 
 typedef struct
 {
+  GFile                     *file;
+  SysprofProfiler           *profiler;
+
+  /* Template Objects */
   SysprofCaptureView        *capture_view;
+  SysprofEmptyStateView     *failed_view;
   SysprofEmptyStateView     *empty_view;
   SysprofRecordingStateView *recording_view;
+  GtkStack                  *stack;
 } SysprofDisplayPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (SysprofDisplay, sysprof_display, GTK_TYPE_BIN)
@@ -73,6 +79,9 @@ sysprof_display_dup_title (SysprofDisplay *self)
 
   g_return_val_if_fail (SYSPROF_IS_DISPLAY (self), NULL);
 
+  if (priv->file != NULL)
+    return g_file_get_basename (priv->file);
+
   if ((reader = sysprof_capture_view_get_reader (priv->capture_view)))
     {
       const gchar *filename;
@@ -88,6 +97,11 @@ sysprof_display_dup_title (SysprofDisplay *self)
 static void
 sysprof_display_finalize (GObject *object)
 {
+  SysprofDisplay *self = (SysprofDisplay *)object;
+  SysprofDisplayPrivate *priv = sysprof_display_get_instance_private (self);
+
+  g_clear_object (&priv->profiler);
+
   G_OBJECT_CLASS (sysprof_display_parent_class)->finalize (object);
 }
 
@@ -143,9 +157,11 @@ sysprof_display_class_init (SysprofDisplayClass *klass)
   g_object_class_install_properties (object_class, N_PROPS, properties);
 
   gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/sysprof/ui/sysprof-display.ui");
-  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay , empty_view);
-  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay , recording_view);
-  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay , capture_view);
+  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay, capture_view);
+  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay, empty_view);
+  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay, failed_view);
+  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay, recording_view);
+  gtk_widget_class_bind_template_child_private (widget_class, SysprofDisplay, stack);
 
   g_type_ensure (SYSPROF_TYPE_CAPTURE_VIEW);
   g_type_ensure (SYSPROF_TYPE_EMPTY_STATE_VIEW);
@@ -157,3 +173,113 @@ sysprof_display_init (SysprofDisplay *self)
 {
   gtk_widget_init_template (GTK_WIDGET (self));
 }
+
+/**
+ * sysprof_display_get_profiler:
+ *
+ * Gets the proflier for the display.
+ *
+ * Returns: (transfer none) (nullable): a #SysprofProfiler or %NULL
+ *
+ * Since: 3.34
+ */
+SysprofProfiler *
+sysprof_display_get_profiler (SysprofDisplay *self)
+{
+  SysprofDisplayPrivate *priv = sysprof_display_get_instance_private (self);
+
+  g_return_val_if_fail (SYSPROF_IS_DISPLAY (self), NULL);
+
+  return priv->profiler;
+}
+
+/**
+ * sysprof_display_is_empty:
+ *
+ * Checks if any content is or will be loaded into @self.
+ *
+ * Returns: %TRUE if the tab is unperterbed.
+ *
+ * Since: 3.34
+ */
+gboolean
+sysprof_display_is_empty (SysprofDisplay *self)
+{
+  SysprofDisplayPrivate *priv = sysprof_display_get_instance_private (self);
+
+  g_return_val_if_fail (SYSPROF_IS_DISPLAY (self), FALSE);
+
+  return priv->file == NULL &&
+         priv->profiler == NULL &&
+         NULL == sysprof_capture_view_get_reader (priv->capture_view);
+}
+
+static void
+sysprof_display_open_cb (GObject      *object,
+                         GAsyncResult *result,
+                         gpointer      user_data)
+{
+  g_autoptr(SysprofDisplay) self = user_data;
+  SysprofDisplayPrivate *priv = sysprof_display_get_instance_private (self);
+  g_autoptr(SysprofCaptureReader) reader = NULL;
+  g_autoptr(GError) error = NULL;
+
+  g_assert (SYSPROF_IS_DISPLAY (self));
+  g_assert (G_IS_TASK (result));
+
+  if (!(reader = g_task_propagate_pointer (G_TASK (result), &error)))
+    {
+      gtk_stack_set_visible_child (priv->stack, GTK_WIDGET (priv->failed_view));
+      return;
+    }
+
+  sysprof_capture_view_load_async (priv->capture_view, reader, NULL, NULL, NULL);
+  gtk_stack_set_visible_child (priv->stack, GTK_WIDGET (priv->capture_view));
+}
+
+static void
+sysprof_display_open_worker (GTask        *task,
+                             gpointer      source_object,
+                             gpointer      task_data,
+                             GCancellable *cancellable)
+{
+  g_autofree gchar *path = NULL;
+  g_autoptr(GError) error = NULL;
+  SysprofCaptureReader *reader;
+  GFile *file = task_data;
+
+  g_assert (G_IS_TASK (task));
+  g_assert (source_object == NULL);
+  g_assert (G_IS_FILE (file));
+  g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
+
+  path = g_file_get_path (file);
+
+  if (!(reader = sysprof_capture_reader_new (path, &error)))
+    g_task_return_error (task, g_steal_pointer ((&error)));
+  else
+    g_task_return_pointer (task,
+                           g_steal_pointer (&reader),
+                           (GDestroyNotify) sysprof_capture_reader_unref);
+}
+
+void
+sysprof_display_open (SysprofDisplay *self,
+                      GFile          *file)
+{
+  SysprofDisplayPrivate *priv = sysprof_display_get_instance_private (self);
+  g_autoptr(GTask) task = NULL;
+
+  g_return_if_fail (SYSPROF_IS_DISPLAY (self));
+  g_return_if_fail (G_IS_FILE (file));
+  g_return_if_fail (g_file_is_native (file));
+  g_return_if_fail (sysprof_display_is_empty (self));
+
+  g_set_object (&priv->file, file);
+
+  task = g_task_new (NULL, NULL, sysprof_display_open_cb, g_object_ref (self));
+  g_task_set_task_data (task, g_file_dup (file), g_object_unref);
+  g_task_run_in_thread (task, sysprof_display_open_worker);
+
+  g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_TITLE]);
+}
diff --git a/src/libsysprof-ui/sysprof-display.h b/src/libsysprof-ui/sysprof-display.h
index 0b6c735..6d7f194 100644
--- a/src/libsysprof-ui/sysprof-display.h
+++ b/src/libsysprof-ui/sysprof-display.h
@@ -21,6 +21,7 @@
 #pragma once
 
 #include <gtk/gtk.h>
+#include <sysprof.h>
 
 #include "sysprof-version-macros.h"
 
@@ -40,6 +41,13 @@ struct _SysprofDisplayClass
 } __attribute__((aligned(8)));
 
 SYSPROF_AVAILABLE_IN_ALL
-GtkWidget *sysprof_display_new (void);
+GtkWidget       *sysprof_display_new          (void);
+SYSPROF_AVAILABLE_IN_ALL
+SysprofProfiler *sysprof_display_get_profiler (SysprofDisplay *self);
+SYSPROF_AVAILABLE_IN_ALL
+gboolean         sysprof_display_is_empty     (SysprofDisplay *self);
+SYSPROF_AVAILABLE_IN_ALL
+void             sysprof_display_open         (SysprofDisplay *self,
+                                               GFile          *file);
 
 G_END_DECLS
diff --git a/src/libsysprof-ui/sysprof-notebook.c b/src/libsysprof-ui/sysprof-notebook.c
index 0be4977..d0b02e6 100644
--- a/src/libsysprof-ui/sysprof-notebook.c
+++ b/src/libsysprof-ui/sysprof-notebook.c
@@ -83,6 +83,9 @@ sysprof_notebook_page_removed (GtkNotebook *notebook,
   g_assert (SYSPROF_IS_NOTEBOOK (notebook));
   g_assert (GTK_IS_WIDGET (child));
 
+  if (gtk_widget_in_destruction (GTK_WIDGET (notebook)))
+    return;
+
   if (gtk_notebook_get_n_pages (notebook) == 0)
     {
       child = sysprof_display_new ();
@@ -165,3 +168,51 @@ sysprof_notebook_close_current (SysprofNotebook *self)
   if ((page = gtk_notebook_get_current_page (GTK_NOTEBOOK (self))) >= 0)
     gtk_widget_destroy (gtk_notebook_get_nth_page (GTK_NOTEBOOK (self), page));
 }
+
+static void
+find_empty_display_cb (GtkWidget *widget,
+                       gpointer   user_data)
+{
+  GtkWidget **display = user_data;
+
+  g_assert (GTK_IS_WIDGET (widget));
+  g_assert (display != NULL);
+
+  if (*display != NULL)
+    return;
+
+  if (SYSPROF_IS_DISPLAY (widget) &&
+      sysprof_display_is_empty (SYSPROF_DISPLAY (widget)))
+    *display = widget;
+}
+
+void
+sysprof_notebook_open (SysprofNotebook *self,
+                       GFile           *file)
+{
+  GtkWidget *display = NULL;
+  gint page;
+
+  g_return_if_fail (SYSPROF_IS_NOTEBOOK (self));
+  g_return_if_fail (g_file_is_native (file));
+
+  gtk_container_foreach (GTK_CONTAINER (self),
+                         find_empty_display_cb,
+                         &display);
+
+  if (display == NULL)
+    {
+
+      display = sysprof_display_new ();
+      page = gtk_notebook_insert_page (GTK_NOTEBOOK (self), display, NULL, -1);
+      gtk_widget_show (display);
+    }
+  else
+    {
+      page = gtk_notebook_page_num (GTK_NOTEBOOK (self), display);
+    }
+
+  gtk_notebook_set_current_page (GTK_NOTEBOOK (self), page);
+
+  sysprof_display_open (SYSPROF_DISPLAY (display), file);
+}
diff --git a/src/libsysprof-ui/sysprof-notebook.h b/src/libsysprof-ui/sysprof-notebook.h
index 7a06439..de3cfc1 100644
--- a/src/libsysprof-ui/sysprof-notebook.h
+++ b/src/libsysprof-ui/sysprof-notebook.h
@@ -43,5 +43,8 @@ SYSPROF_AVAILABLE_IN_ALL
 GtkWidget *sysprof_notebook_new           (void);
 SYSPROF_AVAILABLE_IN_ALL
 void       sysprof_notebook_close_current (SysprofNotebook *self);
+SYSPROF_AVAILABLE_IN_ALL
+void       sysprof_notebook_open          (SysprofNotebook *self,
+                                           GFile           *file);
 
 G_END_DECLS
diff --git a/src/libsysprof-ui/ui/sysprof-display.ui b/src/libsysprof-ui/ui/sysprof-display.ui
index 1392b5a..df0071a 100644
--- a/src/libsysprof-ui/ui/sysprof-display.ui
+++ b/src/libsysprof-ui/ui/sysprof-display.ui
@@ -31,6 +31,17 @@
             <property name="name">recording</property>
           </packing>
         </child>
+        <child>
+          <object class="SysprofEmptyStateView" id="failed_view">
+            <property name="icon-name">computer-fail-symbolic</property>
+            <property name="title" translatable="yes">Something went wrong</property>
+            <property name="subtitle" translatable="yes">Sysprof failed to access the requested performance 
data.</property>
+            <property name="visible">true</property>
+          </object>
+          <packing>
+            <property name="name">failed</property>
+          </packing>
+        </child>
       </object>
     </child>
   </template>
diff --git a/src/sysprof/sysprof-window.c b/src/sysprof/sysprof-window.c
index 249637b..2cd261d 100644
--- a/src/sysprof/sysprof-window.c
+++ b/src/sysprof/sysprof-window.c
@@ -22,6 +22,7 @@
 
 #include "config.h"
 
+#include <glib/gi18n.h>
 #include <sysprof-ui.h>
 
 #include "sysprof-window.h"
@@ -134,13 +135,50 @@ sysprof_window_open (SysprofWindow *self,
   g_return_if_fail (SYSPROF_IS_WINDOW (self));
   g_return_if_fail (G_IS_FILE (file));
 
-
+  sysprof_notebook_open (self->notebook, file);
 }
 
 void
 sysprof_window_open_from_dialog (SysprofWindow *self)
 {
+  GtkFileChooserNative *dialog;
+  GtkFileFilter *filter;
+  gint response;
+
   g_return_if_fail (SYSPROF_IS_WINDOW (self));
+
+  /* Translators: This is a window title. */
+  dialog = gtk_file_chooser_native_new (_("Open Capture…"),
+                                        GTK_WINDOW (self),
+                                        GTK_FILE_CHOOSER_ACTION_OPEN,
+                                        /* Translators: This is a button. */
+                                        _("Open"),
+                                        /* Translators: This is a button. */
+                                        _("Cancel"));
+
+  gtk_file_chooser_set_local_only (GTK_FILE_CHOOSER (dialog), TRUE);
+
+  filter = gtk_file_filter_new ();
+  gtk_file_filter_set_name (filter, _("Sysprof Captures"));
+  gtk_file_filter_add_pattern (filter, "*.syscap");
+  gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
+
+  filter = gtk_file_filter_new ();
+  gtk_file_filter_set_name (filter, _("All Files"));
+  gtk_file_filter_add_pattern (filter, "*");
+  gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
+
+  response = gtk_native_dialog_run (GTK_NATIVE_DIALOG (dialog));
+
+  if (response == GTK_RESPONSE_ACCEPT)
+    {
+      g_autoptr(GFile) file = NULL;
+
+      file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
+      sysprof_window_open (self, file);
+    }
+
+  gtk_native_dialog_destroy (GTK_NATIVE_DIALOG (dialog));
 }
 
 void