Disable launch button until update finished successfully (AppImageCommunity#6)

Fixes AppImageCommunity#5

Author: TheAssassin

progress.vala

@@ -23,7 +23,7 @@ public class ProgressWindow : Window {
  private Revealer revealer2;
 
  private Button btn_cancel;
- private Button btn_show_files;
+ private Button btn_launch_now;
  private Button btn_quit;
 
  private Pid child_pid;
@@ -85,9 +85,10 @@ public class ProgressWindow : Window {
  btn_quit.clicked.connect(Gtk.main_quit);
  btn_quit.set_visible(false);
 
- btn_show_files = builder.get_object("btn_show_files") as Button;
- btn_show_files.clicked.connect(this.show_files);
- btn_show_files.set_visible(false);
+ btn_launch_now = builder.get_object("btn_launch_now") as Button;
+ btn_launch_now.clicked.connect(this.show_files);
+ btn_launch_now.set_visible(false);
+ btn_launch_now.set_sensitive(false);
 
  this.files_to_be_updated = files_to_be_updated;
  this.file_name = file_name;
@@ -136,16 +137,15 @@ public class ProgressWindow : Window {
  return this.process_error (channel, condition, "stderr");
  });
 
-  ChildWatch.add (child_pid, (pid, status) => {
- // Triggered when the child indicated by child_pid exits
- Process.close_pid (pid);
-
+ ChildWatch.add (child_pid, (pid, status) => {
+ // Triggered when the child indicated by child_pid exits
+ Process.close_pid(pid);
+ btn_launch_now.set_sensitive(true);
  });
 
  } catch (SpawnError e) {
  action_label.label = "Error: " + e.message;
  }
-
  }
 
  /* Handle output pipe */
@@ -187,7 +187,7 @@ public class ProgressWindow : Window {
 revealer2.set_reveal_child (true);
  icon_image.icon_name="emblem-ok-symbolic";
  Posix.system("chmod 0755 " + result_file_name); // Because the CLI does not reliably do it (FIXME)
-btn_show_files.set_visible(true);
+btn_launch_now.set_visible(true);
  }
 
  if(line.contains("Cannot") || line.contains("Error")) {

ui/progress.ui

@@ -56,7 +56,7 @@
  <property name="margin_right">5</property>
  <property name="spacing">10</property>
  <child>
- <object class="GtkButton" id="btn_show_files">
+ <object class="GtkButton" id="btn_launch_now">
  <property name="label" translatable="yes">Launch now</property>
  <property name="visible">False</property>
  <property name="can_focus">True</property>