Refactor app loading and window management (#609)

TactilityC/Include/tt_app_fileselection.h

@@ -1,7 +1,6 @@
 #pragma once
 
-#include "tt_app.h"
-#include "tt_bundle.h"
+#include <app/manager.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -9,23 +8,25 @@ extern "C" {
 
 /**
  * Show a file selection dialog that allows the user to select an existing file.
- * @return the launch ID of the dialog, which can be compared in onResult to identify the source
+ * @return the launch ID of the dialog
  */
-AppLaunchId tt_app_fileselection_start_for_existing_file();
+AppInstanceId tt_app_fileselection_start_for_existing_file(AppInstanceId app_id);
 
 /**
  * Show a file selection dialog that allows the user to select a new or existing file.
- * @return the launch ID of the dialog, which can be compared in onResult to identify the source
+ * @return the launch ID of the dialog
  */
-AppLaunchId tt_app_fileselection_start_for_existing_or_new_file();
+AppInstanceId tt_app_fileselection_start_for_existing_or_new_file(AppInstanceId app_id);
 
 /**
- * @param[in] handle the result bundle passed to onResult
+ * @return the path picked by the last FileSelection dialog that closed with result == Ok (see
+ * tt::app::fileselection::getLastPath()). Only one dialog is expected to be open at a time.
  * @param[out] buffer the buffer to store the selected path in
  * @param[in] bufferSize the size of the buffer (must include room for the null terminator)
- * @return true if a path was selected and written to buffer, false otherwise
+ * @retval false @a bufferSize was too small - @a buffer is left untouched
+ * @retval true @a buffer was filled
  */
-bool tt_app_fileselection_get_result_path(BundleHandle handle, char* buffer, uint32_t bufferSize);
+bool tt_app_fileselection_get_result_path(char* buffer, uint32_t bufferSize);
 
 #ifdef __cplusplus
 }