CheatSearchWidget: New feature, writing a value to all selected addresses

Source/Core/Core/CheatSearch.cpp

@@ -505,6 +505,23 @@ bool Cheats::CheatSearchSession<T>::WasFirstSearchDone() const
   return m_first_search_done;
 }
 
+template <typename T>
+bool Cheats::CheatSearchSession<T>::WriteValue(const Core::CPUThreadGuard& guard,
+                                               std::span<u32> addresses) const
+{
+  if (!m_value)
+    return false;
+
+  T value = m_value.value();
+  bool result = true;
+  for (auto address : addresses)
+  {
+    if (!PowerPC::MMU::HostTryWrite<T>(guard, value, address, m_address_space).has_value())
+      result = false;
+  }
+  return result;
+}
+
 template <typename T>
 std::unique_ptr<Cheats::CheatSearchSessionBase> Cheats::CheatSearchSession<T>::Clone() const
 {

Source/Core/Core/CheatSearch.h

@@ -165,6 +165,8 @@ public:
   virtual SearchResultValueState GetResultValueState(size_t index) const = 0;
   virtual bool WasFirstSearchDone() const = 0;
 
+  virtual bool WriteValue(const Core::CPUThreadGuard&, std::span<u32>) const = 0;
+
   // Create a complete copy of this search session.
   virtual std::unique_ptr<CheatSearchSessionBase> Clone() const = 0;
 
@@ -212,6 +214,8 @@ public:
   SearchResultValueState GetResultValueState(size_t index) const override;
   bool WasFirstSearchDone() const override;
 
+  bool WriteValue(const Core::CPUThreadGuard&, std::span<u32>) const override;
+
   std::unique_ptr<CheatSearchSessionBase> Clone() const override;
   std::unique_ptr<CheatSearchSessionBase> ClonePartial(size_t begin_index,
                                                        size_t end_index) const override;

Source/Core/DolphinQt/CheatSearchWidget.cpp

@@ -14,6 +14,7 @@
 #include <QComboBox>
 #include <QCursor>
 #include <QHBoxLayout>
+#include <QInputDialog>
 #include <QLabel>
 #include <QLineEdit>
 #include <QMenu>
@@ -493,13 +494,14 @@ void CheatSearchWidget::OnAddressTableContextMenu()
   if (m_address_table->selectedItems().isEmpty())
     return;
 
-  auto* item = m_address_table->selectedItems()[0];
-  const u32 address = item->data(ADDRESS_TABLE_ADDRESS_ROLE).toUInt();
-
   QMenu* menu = new QMenu(this);
   menu->setAttribute(Qt::WA_DeleteOnClose, true);
 
-  menu->addAction(tr("Show in memory"), [this, address] { emit ShowMemory(address); });
+  menu->addAction(tr("Show in memory"), this, [this] {
+    auto* item = m_address_table->selectedItems()[0];
+    const u32 address = item->data(ADDRESS_TABLE_ADDRESS_ROLE).toUInt();
+    emit ShowMemory(address);
+  });
   menu->addAction(tr("Add to watch"), this, [this] {
     for (auto* const item : m_address_table->selectedItems())
     {
@@ -509,6 +511,7 @@ void CheatSearchWidget::OnAddressTableContextMenu()
     }
   });
   menu->addAction(tr("Generate Action Replay Code(s)"), this, &CheatSearchWidget::GenerateARCodes);
+  menu->addAction(tr("Write value"), this, &CheatSearchWidget::WriteValue);
 
   menu->exec(QCursor::pos());
 }
@@ -594,10 +597,40 @@ void CheatSearchWidget::GenerateARCodes()
   }
 }
 
+void CheatSearchWidget::WriteValue()
+{
+  if (m_address_table->selectedItems().isEmpty())
+    return;
+
+  bool ok{};
+  QString text = QInputDialog::getText(this, tr("Write value"), tr("Value:"), QLineEdit::Normal,
+                                       QString{}, &ok);
+
+  if (ok && m_session->SetValueFromString(text.toStdString(),
+                                          m_parse_values_as_hex_checkbox->isChecked()))
+  {
+    auto items = m_address_table->selectedItems();
+    std::vector<u32> addresses(items.size());
+    std::transform(items.begin(), items.end(), addresses.begin(), [](QTableWidgetItem* item) {
+      return item->data(ADDRESS_TABLE_ADDRESS_ROLE).toUInt();
+    });
+
+    Core::CPUThreadGuard guard{m_system};
+    if (!m_session->WriteValue(guard, std::span<u32>(addresses)))
+    {
+      m_info_label_1->setText(tr("There was an error writing (some) values."));
+    }
+  }
+  else
+  {
+    m_info_label_1->setText(tr("Invalid value."));
+  }
+}
+
 void CheatSearchWidget::RefreshCurrentValueTableItem(
     QTableWidgetItem* const current_value_table_item)
 {
-  const auto address = current_value_table_item->data(ADDRESS_TABLE_ADDRESS_ROLE).toUInt();
+  const u32 address = current_value_table_item->data(ADDRESS_TABLE_ADDRESS_ROLE).toUInt();
   const auto curr_val_iter = m_address_table_current_values.find(address);
   if (curr_val_iter != m_address_table_current_values.end())
     current_value_table_item->setText(QString::fromStdString(curr_val_iter->second));

Source/Core/DolphinQt/CheatSearchWidget.h

@@ -77,6 +77,7 @@ private:
                        UpdateSource source);
   void RecreateGUITable();
   void GenerateARCodes();
+  void WriteValue();
   int GetVisibleRowsBeginIndex() const;
   int GetVisibleRowsEndIndex() const;