Changeset 11467

Timestamp:

10/15/14 19:40:51 (10 years ago)

Author:

bburlacu

Message:

#2265: Added drag&drop file loading support. To avoid confusion between files and all the other data types that can be dragged and dropped in HeuristicLab, the drop area for loading files is restricted to the toolbar and menubar of the HL window.

Location:

trunk/sources/HeuristicLab.MainForm.WindowsForms/3.3/MainForms

Files:

• MainForm.Designer.cs (modified) (3 diffs)
• MainForm.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.MainForm.WindowsForms/3.3/MainForms/MainForm.Designer.cs

@@ -57 +57 @@
       this.menuStrip.TabIndex = 0;
       this.menuStrip.Text = "menuStrip";
+      this.menuStrip.AllowDrop = true;
+      this.menuStrip.DragEnter += MainFormBase_DragEnter;
+      this.menuStrip.DragDrop += MainFormBase_DragDrop;
       // 
       // toolStrip
@@ -64 +67 @@
       this.toolStrip.Size = new System.Drawing.Size(624, 25);
       this.toolStrip.TabIndex = 1;
+      this.toolStrip.AllowDrop = true;
+      this.toolStrip.DragEnter += MainFormBase_DragEnter;
+      this.toolStrip.DragDrop += MainFormBase_DragDrop;
       // 
       // statusStrip
@@ -73 +79 @@
       this.statusStrip.Text = "statusStrip";
       // 
-      // MainFormBase
+      // MainForm
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

trunk/sources/HeuristicLab.MainForm.WindowsForms/3.3/MainForms/MainForm.cs

@@ -555 +555 @@
       try {
         ((IActionUserInterfaceItem)item.Tag).Execute();
-      } catch (Exception ex) {
+      }
+      catch (Exception ex) {
         ErrorHandling.ShowErrorDialog((Control)MainFormManager.MainForm, ex);
       }
@@ -600 +601 @@
     }
     #endregion
+
+    private void MainFormBase_DragEnter(object sender, DragEventArgs e) {
+      // perform type checking to ensure that the data being dragged is of an acceptable type
+      e.Effect = e.Data.GetDataPresent(DataFormats.FileDrop) ? DragDropEffects.Copy : DragDropEffects.None;
+    }
+
+    private void MainFormBase_DragDrop(object sender, DragEventArgs e) {
+      if (e.Data.GetDataPresent(DataFormats.FileDrop)) {
+        string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
+        foreach (var path in files) {
+          SetAppStartingCursor();
+          ContentManager.LoadAsync(path, LoadingCompleted);
+        }
+      }
+    }
+
+    private static void LoadingCompleted(IStorableContent content, Exception error) {
+      try {
+        if (error != null) throw error;
+        IView view = MainFormManager.MainForm.ShowContent(content);
+        if (view == null)
+          ErrorHandling.ShowErrorDialog("There is no view for the loaded item. It cannot be displayed.", new InvalidOperationException("No View Available"));
+      }
+      catch (Exception ex) {
+        ErrorHandling.ShowErrorDialog((Control)MainFormManager.MainForm, "Cannot open file.", ex);
+      }
+      finally {
+        ((MainForm)MainFormManager.MainForm).ResetAppStartingCursor();
+      }
+    }
   }
 }