IDEA-180834 Properly initialize TaskStateCombo with a project and a task

in "Open Task" and "Close Task" dialogs and no longer depend on where
exactly $$$setupUI$$$() is called. It has broken down since after recent
changes another call, namely setTitle(), was inserted before the
assignments to myProject and myTask final fields in the constructor of
OpenTaskDialog. Then $$$setupUI()$$$ call was moved right after the
super() instead, and therefore createComponents() started observing
null values of these fields instead of those actually passed in the
constructor.

plugins/tasks/tasks-core/src/com/intellij/tasks/actions/CloseTaskDialog.java

@@ -56,6 +56,8 @@ public class CloseTaskDialog extends DialogWrapper {
     super(project, false);
     myProject = project;
     myTask = task;
+    myStateCombo.setProject(myProject);
+    myStateCombo.setTask(myTask);
 
     setTitle("Close Task");
     myTaskLabel.setText(TaskUtil.getTrimmedSummary(task));
@@ -119,7 +121,7 @@ public class CloseTaskDialog extends DialogWrapper {
   }
 
   private void createUIComponents() {
-    myStateCombo = new TaskStateCombo(myProject, myTask) {
+    myStateCombo = new TaskStateCombo() {
       @Nullable
       @Override
       protected CustomTaskState getPreferredState(@NotNull TaskRepository repository, @NotNull Collection<CustomTaskState> available) {

plugins/tasks/tasks-core/src/com/intellij/tasks/actions/OpenTaskDialog.java

@@ -66,10 +66,12 @@ public class OpenTaskDialog extends DialogWrapper {
 
   public OpenTaskDialog(@NotNull final Project project, @NotNull final Task task) {
     super(project, false);
-    setTitle("Open Task");
-
     myProject = project;
     myTask = new LocalTaskImpl(task);
+    myTaskStateCombo.setProject(myProject);
+    myTaskStateCombo.setTask(myTask);
+
+    setTitle("Open Task");
     myNameField.setText(TaskUtil.getTrimmedSummary(task));
     myNameField.setEnabled(!task.isIssue());
 
@@ -103,7 +105,7 @@ public class OpenTaskDialog extends DialogWrapper {
     if (myUpdateState.isSelected()) {
       myTaskStateCombo.scheduleUpdateOnce();
     }
-    
+
     myAdditionalPanel.setLayout(new BoxLayout(myAdditionalPanel, BoxLayout.Y_AXIS));
     myPanels = TaskDialogPanelProvider.getOpenTaskPanels(project, myTask);
     for (TaskDialogPanel panel : myPanels) {
@@ -197,7 +199,7 @@ public class OpenTaskDialog extends DialogWrapper {
   }
 
   private void createUIComponents() {
-    myTaskStateCombo = new TaskStateCombo(myProject, myTask) {
+    myTaskStateCombo = new TaskStateCombo() {
       @Nullable
       @Override
       protected CustomTaskState getPreferredState(@NotNull TaskRepository repository, @NotNull Collection<CustomTaskState> available) {

plugins/tasks/tasks-core/src/com/intellij/tasks/impl/TaskStateCombo.java

@@ -9,7 +9,6 @@ import com.intellij.tasks.Task;
 import com.intellij.tasks.TaskRepository;
 import com.intellij.tasks.impl.TaskUiUtil.ComboBoxUpdater;
 import com.intellij.ui.components.JBLabel;
-import com.intellij.util.Function;
 import com.intellij.util.PlatformIcons;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.ui.UIUtil;
@@ -36,8 +35,8 @@ public abstract class TaskStateCombo extends JPanel {
     return repository != null && repository.isSupported(TaskRepository.STATE_UPDATING);
   }
 
-  private final Project myProject;
-  private final Task myTask;
+  private Project myProject;
+  private Task myTask;
   private final TemplateKindCombo myKindCombo = new TemplateKindCombo();
 
   // For designer only
@@ -121,6 +120,14 @@ public abstract class TaskStateCombo extends JPanel {
     return myKindCombo.getComboBox();
   }
 
+  public void setProject(@NotNull Project project) {
+    myProject = project;
+  }
+
+  public void setTask(@NotNull Task task) {
+    myTask = task;
+  }
+
   /**
    * Determine what state should be initially selected in the list.
    * @param repository task repository to communicate with