Added a flag to FileBrowserComponent to allow it to keep the current name when the folder changes, and used this flag in the introjucer's new project wizard.

extras/Introjucer/Source/Wizards/jucer_NewProjectWizardComponent.h

@@ -256,7 +256,8 @@ private:
 class WizardComp  : public Component,
                     private ButtonListener,
                     private ComboBoxListener,
-                    private TextEditorListener
+                    private TextEditorListener,
+                    private FileBrowserListener
 {
 public:
     WizardComp()
@@ -264,7 +265,9 @@ public:
           projectName (TRANS("Project name")),
           nameLabel (String::empty, TRANS("Project Name") + ":"),
           typeLabel (String::empty, TRANS("Project Type") + ":"),
-          fileBrowser (FileBrowserComponent::saveMode | FileBrowserComponent::canSelectDirectories,
+          fileBrowser (FileBrowserComponent::saveMode
+                         | FileBrowserComponent::canSelectDirectories
+                         | FileBrowserComponent::doNotClearFileNameOnRootChange,
                        NewProjectWizardClasses::getLastWizardFolder(), nullptr, nullptr),
           fileOutline (String::empty, TRANS("Project Folder") + ":"),
           targetsOutline (String::empty, TRANS("Target Platforms") + ":"),
@@ -303,6 +306,8 @@ public:
         addChildAndSetID (&fileBrowser, "fileBrowser");
         fileBrowser.setBounds ("fileOutline.left + 10, fileOutline.top + 20, fileOutline.right - 10, fileOutline.bottom - 32");
         fileBrowser.setFilenameBoxLabel ("Folder:");
+        fileBrowser.setFileName (File::createLegalFileName (projectName.getText()));
+        fileBrowser.addListener (this);
 
         addChildAndSetID (&createButton, "createButton");
         createButton.setBounds ("right - 130, bottom - 34, parent.width - 30, parent.height - 30");
@@ -409,6 +414,16 @@ public:
         fileBrowser.setFileName (File::createLegalFileName (projectName.getText()));
     }
 
+    void selectionChanged() override {}
+
+    void fileClicked (const File&, const MouseEvent&) override {}
+    void fileDoubleClicked (const File&) override {}
+
+    void browserRootChanged (const File&) override
+    {
+        fileBrowser.setFileName (File::createLegalFileName (projectName.getText()));
+    }
+
     ComboBox projectType;
     PlatformTargetsComp platformTargets;
 

modules/juce_gui_basics/filebrowser/juce_FileBrowserComponent.cpp

@@ -387,7 +387,7 @@ void FileBrowserComponent::fileDoubleClicked (const File& f)
     {
         setRoot (f);
 
-        if ((flags & canSelectDirectories) != 0)
+        if ((flags & canSelectDirectories) != 0 && (flags & doNotClearFileNameOnRootChange) == 0)
             filenameBox.setText (String::empty);
     }
     else
@@ -432,7 +432,9 @@ void FileBrowserComponent::textEditorReturnKeyPressed (TextEditor&)
         {
             setRoot (f);
             chosenFiles.clear();
-            filenameBox.setText (String::empty);
+
+            if ((flags & doNotClearFileNameOnRootChange) == 0)
+                filenameBox.setText (String());
         }
         else
         {

modules/juce_gui_basics/filebrowser/juce_FileBrowserComponent.h

@@ -51,18 +51,19 @@ public:
     */
     enum FileChooserFlags
     {
-        openMode                = 1,    /**< specifies that the component should allow the user to
-                                             choose an existing file with the intention of opening it. */
-        saveMode                = 2,    /**< specifies that the component should allow the user to specify
-                                             the name of a file that will be used to save something. */
-        canSelectFiles          = 4,    /**< specifies that the user can select files (can be used in
-                                             conjunction with canSelectDirectories). */
-        canSelectDirectories    = 8,    /**< specifies that the user can select directories (can be used in
-                                             conjuction with canSelectFiles). */
-        canSelectMultipleItems  = 16,   /**< specifies that the user can select multiple items. */
-        useTreeView             = 32,   /**< specifies that a tree-view should be shown instead of a file list. */
-        filenameBoxIsReadOnly   = 64,   /**< specifies that the user can't type directly into the filename box. */
-        warnAboutOverwriting    = 128   /**< specifies that the dialog should warn about overwriting existing files (if possible). */
+        openMode                        = 1,    /**< specifies that the component should allow the user to
+                                                     choose an existing file with the intention of opening it. */
+        saveMode                        = 2,    /**< specifies that the component should allow the user to specify
+                                                     the name of a file that will be used to save something. */
+        canSelectFiles                  = 4,    /**< specifies that the user can select files (can be used in
+                                                     conjunction with canSelectDirectories). */
+        canSelectDirectories            = 8,    /**< specifies that the user can select directories (can be used in
+                                                     conjuction with canSelectFiles). */
+        canSelectMultipleItems          = 16,   /**< specifies that the user can select multiple items. */
+        useTreeView                     = 32,   /**< specifies that a tree-view should be shown instead of a file list. */
+        filenameBoxIsReadOnly           = 64,   /**< specifies that the user can't type directly into the filename box. */
+        warnAboutOverwriting            = 128,  /**< specifies that the dialog should warn about overwriting existing files (if possible). */
+        doNotClearFileNameOnRootChange  = 256   /**< specifies that the file name should not be cleared upon root change. */
     };
 
     //==============================================================================