feat(ui): implement adding/removing entries

Author: ExplosBlue

include/editor/paramListWidget.h

@@ -3,6 +3,7 @@
 
 #include <QWidget>
 #include <QListView>
+#include <QPushButton>
 #include <QStandardItemModel>
 
 #include "param/param.h"
@@ -22,6 +23,7 @@ private slots:
 
 private:
     void populateList();
+    void appendItem(int index = -1);
     void loadFriendlyNames();
 
 private:
@@ -31,6 +33,9 @@ private slots:
     QListView mListView;
 
     std::map<int, QString> mFriendlyNames;
+
+    QPushButton mInsertButton;
+    QPushButton mDeleteButton;
 };
 
 #endif // PARAMLISTWIDGET_H

src/editor/paramListWidget.cpp

@@ -13,9 +13,45 @@ ParamListWidget::ParamListWidget(QWidget* parent) :
     mListView.setModel(&mListModel);
     connect(mListView.selectionModel(), &QItemSelectionModel::selectionChanged, this, &ParamListWidget::handleSelectionChanged);
 
+    // Insert Button
+    mInsertButton.setText("Insert");
+    connect(&mInsertButton, &QPushButton::pressed, this, [=, this]() {
+        if (!mParamListPtr) { return; }
+        mParamListPtr->emplace_back();
+        appendItem();
+    });
+
+    // Delete Button
+    mDeleteButton.setText("Delete");
+    connect(&mDeleteButton, &QPushButton::pressed, this, [=, this]() {
+        if (!mParamListPtr) { return; }
+
+        auto selectionModel = mListView.selectionModel();
+        if (!selectionModel) { return; }
+
+        QModelIndexList selectedIndexes = selectionModel->selectedIndexes();
+        if (selectedIndexes.isEmpty()) { return; }
+
+        int row = selectedIndexes.first().row();
+
+        if (row >= 0 && row < static_cast<int>(mParamListPtr->size())) {
+            mParamListPtr->erase(mParamListPtr->begin() + row);
+        } else {
+            return;
+        }
+
+        mListModel.removeRow(row);
+    });
+
+    // Button Layout
+    auto* buttonLayout = new QHBoxLayout;
+    buttonLayout->addWidget(&mInsertButton);
+    buttonLayout->addWidget(&mDeleteButton);
+
     // Main Layout
     auto* mainLayout = new QVBoxLayout(this);
     mainLayout->addWidget(&mListView);
+    mainLayout->addLayout(buttonLayout);
 
     loadFriendlyNames();
 }
@@ -63,23 +99,31 @@ void ParamListWidget::populateList() {
         return;
     }
 
-    int index = 0;
-    for (const auto& param : *mParamListPtr) {
-        auto iter = mFriendlyNames.find(index);
-        QString label;
-        if (iter != mFriendlyNames.end()) {
-            label = QString("Param %1 : %2").arg(index).arg(iter->second);
-        } else {
-            label = QString("Param %1").arg(index);
-        }
-        QStandardItem* item = new QStandardItem(label);
-        item->setEditable(false);
-        item->setData(index, Qt::UserRole);
-        mListModel.appendRow(item);
-        ++index;
+    int count = static_cast<int>(mParamListPtr->size());
+    for (int index = 0; index < count; ++index) {
+        appendItem(index);
     }
 }
 
+void ParamListWidget::appendItem(int index) {
+    if (index == -1) {
+        index = mListModel.rowCount();
+    }
+
+    QString label;
+    auto iter = mFriendlyNames.find(index);
+    if (iter != mFriendlyNames.end()) {
+        label = QString("Param %1 : %2").arg(index).arg(iter->second);
+    } else {
+        label = QString("Param %1").arg(index);
+    }
+
+    QStandardItem* item = new QStandardItem(label);
+    item->setEditable(false);
+    item->setData(index, Qt::UserRole);
+    mListModel.appendRow(item);
+}
+
 void ParamListWidget::handleSelectionChanged(const QItemSelection& selection) {
     if (selection.indexes().isEmpty())
         return;