set displayed filepath when loading in state

Builds/MacOSX/juicysfplugin.xcodeproj/project.pbxproj

@@ -235,7 +235,9 @@
 		560D40E30164CA9D05C6AC3B /* MyColours.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = MyColours.h; path = ../../Source/MyColours.h; sourceTree = SOURCE_ROOT; };
 		571BC08FE42BABE3BAF364C8 /* Info-AUv3_AppExtension.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "Info-AUv3_AppExtension.plist"; sourceTree = SOURCE_ROOT; };
 		596723D094319DA06FDDCDC6 /* StateChangeSubscriber.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = StateChangeSubscriber.h; path = ../../Source/StateChangeSubscriber.h; sourceTree = "<group>"; };
+		596725F7ACCE2D50FCEC1981 /* ExposesComponents.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ExposesComponents.h; path = ../../Source/ExposesComponents.h; sourceTree = "<group>"; };
 		59672C6315E5D06A21B4A2F2 /* SharesParams.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SharesParams.h; path = ../../Source/SharesParams.h; sourceTree = "<group>"; };
+		59672DE3D2595F1C3D7189CB /* FilePickerFragment.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = FilePickerFragment.h; path = ../../Source/FilePickerFragment.h; sourceTree = "<group>"; };
 		5B3CBC48DAB08EDF53CEE609 /* include_juce_audio_plugin_client_VST3.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = include_juce_audio_plugin_client_VST3.cpp; path = ../../JuceLibraryCode/include_juce_audio_plugin_client_VST3.cpp; sourceTree = SOURCE_ROOT; };
 		5BC90F629770BCF4193FABDD /* AudioToolbox.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AudioToolbox.framework; path = System/Library/Frameworks/AudioToolbox.framework; sourceTree = SDKROOT; };
 		63942F8053F1E4E72C1BE98C /* FilePicker.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = FilePicker.cpp; path = ../../Source/FilePicker.cpp; sourceTree = SOURCE_ROOT; };
@@ -557,6 +559,8 @@
 				B3E8D1BE528BBA1B6004672E /* PluginEditor.h */,
 				596723D094319DA06FDDCDC6 /* StateChangeSubscriber.h */,
 				59672C6315E5D06A21B4A2F2 /* SharesParams.h */,
+				596725F7ACCE2D50FCEC1981 /* ExposesComponents.h */,
+				59672DE3D2595F1C3D7189CB /* FilePickerFragment.h */,
 			);
 			name = Source;
 			sourceTree = "<group>";

Source/ExposesComponents.h

@@ -0,0 +1,16 @@
+//
+// Created by Alex Birch on 11/04/2018.
+// Copyright (c) 2018 Birchlabs. All rights reserved.
+//
+
+#pragma once
+
+#import "FilePickerFragment.h"
+
+class ExposesComponents {
+public:
+    virtual ~ExposesComponents() {}
+
+    virtual FilePickerFragment& getFilePicker() = 0;
+
+};

Source/FilePicker.cpp

@@ -18,14 +18,12 @@ FilePicker::FilePicker(
         String(),
         "Choose a Soundfont file to load into the synthesizer"
 ),
-  fluidSynthModel(fluidSynthModel) {
+  fluidSynthModel(fluidSynthModel),
+  currentPath() {
     // faster (rounded edges introduce transparency)
     setOpaque (true);
 
-    const String& currentSoundFontAbsPath = fluidSynthModel->getCurrentSoundFontAbsPath();
+    setDisplayedFilePath(fluidSynthModel->getCurrentSoundFontAbsPath());
-    if (currentSoundFontAbsPath.isNotEmpty()) {
-        fileChooser.setCurrentFile(File(currentSoundFontAbsPath), true, dontSendNotification);
-    }
 
     addAndMakeVisible (fileChooser);
     fileChooser.addListener (this);
@@ -48,5 +46,24 @@ void FilePicker::paint(Graphics& g)
 }
 
 void FilePicker::filenameComponentChanged (FilenameComponent*) {
+    currentPath = fileChooser.getCurrentFile().getFullPathName();
     fluidSynthModel->onFileNameChanged(fileChooser.getCurrentFile().getFullPathName());
+}
+
+void FilePicker::setDisplayedFilePath(const String& path) {
+    if (!shouldChangeDisplayedFilePath(path)) {
+        return;
+    }
+    currentPath = path;
+    fileChooser.setCurrentFile(File(path), true, dontSendNotification);
+}
+
+bool FilePicker::shouldChangeDisplayedFilePath(const String &path) {
+    if (path.isEmpty()) {
+        return false;
+    }
+    if (path == currentPath) {
+        return false;
+    }
+    return true;
 }

Source/FilePicker.h

@@ -6,8 +6,10 @@
 
 #include "../JuceLibraryCode/JuceHeader.h"
 #include "FluidSynthModel.h"
+#import "FilePickerFragment.h"
 
 class FilePicker: public Component,
+                  public FilePickerFragment,
                   private FilenameComponentListener
 {
 public:
@@ -18,12 +20,18 @@ public:
 
     void resized() override;
     void paint (Graphics& g) override;
+
+    virtual void setDisplayedFilePath(const String&) override;
 private:
     FilenameComponent fileChooser;
 
     FluidSynthModel* fluidSynthModel;
 
+    String currentPath;
+
     void filenameComponentChanged (FilenameComponent*) override;
 
+    bool shouldChangeDisplayedFilePath(const String &path);
+
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FilePicker)
 };

Source/FilePickerFragment.h

@@ -0,0 +1,14 @@
+//
+// Created by Alex Birch on 11/04/2018.
+// Copyright (c) 2018 Birchlabs. All rights reserved.
+//
+
+#pragma once
+#include "../JuceLibraryCode/JuceHeader.h"
+
+class FilePickerFragment {
+public:
+    virtual ~FilePickerFragment() {}
+
+    virtual void setDisplayedFilePath(const String&) = 0;
+};

Source/PluginEditor.cpp

@@ -135,6 +135,6 @@ bool JuicySFAudioProcessorEditor::keyStateChanged (bool isKeyDown) {
 //    return false;
 }
 
-const FilePicker& JuicySFAudioProcessorEditor::getFilePicker() {
+FilePickerFragment& JuicySFAudioProcessorEditor::getFilePicker() {
-
+    return filePicker;
 }

Source/PluginEditor.h

@@ -14,13 +14,16 @@
 #include "PluginProcessor.h"
 #include "TablesComponent.h"
 #include "SurjectiveMidiKeyboardComponent.h"
+#include "FilePickerFragment.h"
+#include "ExposesComponents.h"
 #include "FilePicker.h"
 #include "StateChangeSubscriber.h"
 
 //==============================================================================
 /**
 */
-class JuicySFAudioProcessorEditor  : public AudioProcessorEditor/*,
+class JuicySFAudioProcessorEditor  : public AudioProcessorEditor,
+                                     public ExposesComponents/*,
                                      public StateChangeSubscriber*/
 {
 public:
@@ -37,7 +40,7 @@ public:
 //    void getStateInformation (XmlElement& xml) override;
 //    void setStateInformation (XmlElement* xmlState) override;
 
-    const FilePicker& getFilePicker();
+    virtual FilePickerFragment& getFilePicker() override;
 
 private:
     // This reference is provided as a quick way for your editor to

Source/PluginProcessor.cpp

@@ -12,6 +12,7 @@
 #include "PluginEditor.h"
 #include "SoundfontSynthVoice.h"
 #include "SoundfontSynthSound.h"
+#include "ExposesComponents.h"
 
 AudioProcessor* JUCE_CALLTYPE createPluginFilter();
 
@@ -241,6 +242,10 @@ void JuicySFAudioProcessor::setStateInformation (const void* data, int sizeInByt
             AudioProcessorEditor* editor = getActiveEditor();
             if (editor != nullptr) {
                 editor->setSize(lastUIWidth, lastUIHeight);
+
+                jassert(dynamic_cast<ExposesComponents*> (editor) != nullptr);
+                ExposesComponents* exposesComponents = dynamic_cast<ExposesComponents*> (editor);
+                exposesComponents->getFilePicker().setDisplayedFilePath(soundFontPath);
             }
 
 //            const String& currentSoundFontAbsPath = fluidSynthModel->getCurrentSoundFontAbsPath();