Plan clipboard text actions in app core

src/app_core/document_platform_io.h

@@ -24,6 +24,14 @@ enum class CursorVisibilityAction {
     hide_cursor,
 };
 
+enum class ClipboardReadAction {
+    read_text,
+};
+
+enum class ClipboardWriteAction {
+    write_text,
+};
+
 [[nodiscard]] constexpr PickedPathAction plan_picked_path(std::string_view path) noexcept
 {
     return path.empty()
@@ -52,4 +60,14 @@ enum class CursorVisibilityAction {
         : CursorVisibilityAction::hide_cursor;
 }
 
+[[nodiscard]] constexpr ClipboardReadAction plan_clipboard_read() noexcept
+{
+    return ClipboardReadAction::read_text;
+}
+
+[[nodiscard]] constexpr ClipboardWriteAction plan_clipboard_write(std::string_view) noexcept
+{
+    return ClipboardWriteAction::write_text;
+}
+
 }

src/app_events.cpp

@@ -63,6 +63,9 @@ void webgl_sync();
 
 std::string App::clipboard_get_text()
 {
+    if (pp::app::plan_clipboard_read() != pp::app::ClipboardReadAction::read_text)
+        return {};
+
 #if _WIN32
     return win32_clipboard_get_text();
 #elif __IOS__
@@ -76,6 +79,9 @@ std::string App::clipboard_get_text()
 
 bool App::clipboard_set_text(const std::string& s)
 {
+    if (pp::app::plan_clipboard_write(s) != pp::app::ClipboardWriteAction::write_text)
+        return false;
+
 #if _WIN32
     return win32_clipboard_set_text(s);
 #elif __IOS__