switch to JUCE Strings so we can copy and compare more easily. make state load attempt to load soundfont and restore window size.

Source/FilePicker.cpp

@@ -43,5 +43,5 @@ void FilePicker::paint(Graphics& g)
 }
 
 void FilePicker::filenameComponentChanged (FilenameComponent*) {
-    fluidSynthModel->onFileNameChanged(fileChooser.getCurrentFile().getFullPathName().toStdString());
+    fluidSynthModel->onFileNameChanged(fileChooser.getCurrentFile().getFullPathName());
 }

Source/FluidSynthModel.cpp

@@ -11,6 +11,7 @@ FluidSynthModel::FluidSynthModel(SharesParams& p)
         : sharesParams(p),
           synth(nullptr),
           settings(nullptr),
+          currentSoundFontAbsPath(),
           initialised(false),
           sfont_id(0),
           channel(0)
@@ -38,9 +39,7 @@ void FluidSynthModel::initialise() {
 
     synth = new_fluid_synth(settings);
 
-    if (sharesParams.getSoundFontPath().isNotEmpty()) {
-        loadFont(sharesParams.getSoundFontPath().toStdString());
-    }
+    loadFont(sharesParams.getSoundFontPath());
 
     fluid_synth_set_gain(synth, 2.0);
 
@@ -128,13 +127,16 @@ fluid_synth_t* FluidSynthModel::getSynth() {
     return synth;
 }
 
-void FluidSynthModel::onFileNameChanged(const string &absPath) {
+void FluidSynthModel::onFileNameChanged(const String &absPath) {
+    if (!shouldLoadFont(absPath)) {
+        return;
+    }
     unloadAndLoadFont(absPath);
-    sharesParams.setSoundFontPath(String(absPath));
+    sharesParams.setSoundFontPath(absPath);
     eventListeners.call(&FluidSynthModel::Listener::fontChanged, this, absPath);
 }
 
-void FluidSynthModel::unloadAndLoadFont(const string &absPath) {
+void FluidSynthModel::unloadAndLoadFont(const String &absPath) {
     // in the base case, there is no font loaded
     if (fluid_synth_sfcount(synth) > 0) {
         fluid_synth_sfunload(synth, sfont_id, 1);
@@ -142,16 +144,30 @@ void FluidSynthModel::unloadAndLoadFont(const string &absPath) {
     loadFont(absPath);
 }
 
-void FluidSynthModel::loadFont(const string &absPath) {
+void FluidSynthModel::loadFont(const String &absPath) {
+    if (!shouldLoadFont(absPath)) {
+        return;
+    }
+    currentSoundFontAbsPath = absPath;
     sfont_id++;
-    fluid_synth_sfload(synth, absPath.c_str(), 1);
+    fluid_synth_sfload(synth, absPath.toStdString().c_str(), 1);
     selectFirstPreset();
 }
 
 FluidSynthModel::Listener::~Listener() {
 }
 
-void FluidSynthModel::Listener::fontChanged(FluidSynthModel * model, const string &absPath) {
+bool FluidSynthModel::shouldLoadFont(const String &absPath) {
+    if (absPath.isEmpty()) {
+        return false;
+    }
+    if (absPath == currentSoundFontAbsPath) {
+        return false;
+    }
+    return true;
+}
+
+void FluidSynthModel::Listener::fontChanged(FluidSynthModel * model, const String &absPath) {
 }
 
 //==============================================================================

Source/FluidSynthModel.h

@@ -27,7 +27,7 @@ public:
     void changePreset(int bank, int preset);
     int getChannel();
 
-    void onFileNameChanged(const string &absPath);
+    void onFileNameChanged(const String &absPath);
 
     //==============================================================================
     /**
@@ -42,7 +42,7 @@ public:
         virtual ~Listener();
 
         /** Called when the button is clicked. */
-        virtual void fontChanged (FluidSynthModel*, const string &absPath);
+        virtual void fontChanged (FluidSynthModel*, const String &absPath);
     };
 
     /** Registers a listener to receive events when this button's state changes.
@@ -63,11 +63,14 @@ private:
     fluid_settings_t* settings;
 //    fluid_audio_driver_t* driver;
 
+    String currentSoundFontAbsPath;
+
     const fluid_preset_t getFirstPreset();
     void selectFirstPreset();
 
-    void unloadAndLoadFont(const string &absPath);
-    void loadFont(const string &absPath);
+    void unloadAndLoadFont(const String &absPath);
+    void loadFont(const String &absPath);
+    bool shouldLoadFont(const String &absPath);
 
     bool initialised;
     unsigned int sfont_id;

Source/PluginProcessor.cpp

@@ -22,7 +22,8 @@ JuicySFAudioProcessor::JuicySFAudioProcessor()
        lastUIWidth(400),
        lastUIHeight(300),
        soundFontPath(String()),
-       fluidSynthModel(*this)
+       fluidSynthModel(*this)/*,
+       pluginEditor(nullptr)*/
 {
     initialiseSynth();
 }
@@ -175,7 +176,8 @@ bool JuicySFAudioProcessor::hasEditor() const
 
 AudioProcessorEditor* JuicySFAudioProcessor::createEditor()
 {
-    return new JuicySFAudioProcessorEditor (*this);
+    // grab a raw pointer to it for our own use
+    return /*pluginEditor = */new JuicySFAudioProcessorEditor (*this);
 }
 
 //==============================================================================
@@ -233,6 +235,13 @@ void JuicySFAudioProcessor::setStateInformation (const void* data, int sizeInByt
             for (auto* param : getParameters())
                 if (auto* p = dynamic_cast<AudioProcessorParameterWithID*> (param))
                     p->setValue ((float) xmlState->getDoubleAttribute (p->paramID, p->getValue()));
+
+            fluidSynthModel.onFileNameChanged(soundFontPath);
+
+            AudioProcessorEditor* editor = getActiveEditor();
+            if (editor != nullptr) {
+                editor->setSize(lastUIWidth, lastUIHeight);
+            }
         }
     }
 }

Source/PluginProcessor.h

@@ -84,6 +84,9 @@ private:
     fluid_synth_t* fluidSynth;
     Synthesiser synth;
 
+//    // just a raw pointer; we do not own
+//    AudioProcessorEditor* pluginEditor;
+
 //    list<StateChangeSubscriber*> stateChangeSubscribers;
 
     static BusesProperties getBusesProperties();

Source/TablesComponent.cpp

@@ -164,7 +164,7 @@ bool TablesComponent::keyPressed(const KeyPress &key) {
     return presetTable->keyPressed(key);
 }
 
-void TablesComponent::fontChanged(FluidSynthModel *, const string &) {
+void TablesComponent::fontChanged(FluidSynthModel *, const String &) {
     banksToPresets = fluidSynthModel->getBanks();
 
     fluid_preset_t* currentPreset = getCurrentPreset();

Source/TablesComponent.h

@@ -27,7 +27,7 @@ public:
     void resized() override;
 
     bool keyPressed(const KeyPress &key) override;
-    void fontChanged(FluidSynthModel *, const string &) override;
+    void fontChanged(FluidSynthModel *, const String &) override;
 
 private:
     FluidSynthModel* fluidSynthModel;