Introduce platform services interface

src/app_events.cpp

@@ -2,6 +2,7 @@
 #include "app.h"
 #include "app_core/document_platform_io.h"
 #include "app_core/document_sharing.h"
+#include "platform_api/platform_services.h"
 #include "renderer_gl/opengl_capabilities.h"
 
 namespace {
@@ -60,21 +61,84 @@ void webgl_pick_file_save(const std::string& path,
 void webgl_sync();
 #endif
 
+namespace {
+
+class LegacyPlatformServices final : public pp::platform::PlatformServices {
+public:
+    [[nodiscard]] std::string clipboard_text() override
+    {
+#if _WIN32
+        return win32_clipboard_get_text();
+#elif __IOS__
+        return [App::I->ios_view clipboard_get_string];
+#elif __OSX__
+        return [App::I->osx_view clipboard_get_string];
+#elif __ANDROID__
+        return android_get_clipboard();
+#else
+        return {};
+#endif
+    }
+
+    [[nodiscard]] bool set_clipboard_text(std::string_view text) override
+    {
+        const std::string value(text);
+#if _WIN32
+        return win32_clipboard_set_text(value);
+#elif __IOS__
+        return [App::I->ios_view clipboard_set_string:value];
+#elif __OSX__
+        return [App::I->osx_view clipboard_set_string:value];
+#elif __ANDROID__
+        return android_set_clipboard(value);
+#else
+        return false;
+#endif
+    }
+
+    void set_cursor_visible(bool visible) override
+    {
+#ifdef _WIN32
+        win32_show_cursor(visible);
+#elif __OSX__
+        [App::I->osx_view show_cursor:visible];
+#else
+        (void)visible;
+#endif
+    }
+
+    void set_virtual_keyboard_visible(bool visible) override
+    {
+#ifdef __IOS__
+        dispatch_async(dispatch_get_main_queue(), ^{
+            if (visible)
+                [App::I->ios_view show_keyboard];
+            else
+                [App::I->ios_view hide_keyboard];
+        });
+#elif __ANDROID__
+        displayKeyboard(visible);
+#else
+        (void)visible;
+#endif
+    }
+};
+
+[[nodiscard]] pp::platform::PlatformServices& legacy_platform_services()
+{
+    static LegacyPlatformServices services;
+    return services;
+}
+
+}
+
 
 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__
-    return [ios_view clipboard_get_string];
-#elif __OSX__
-    return [osx_view clipboard_get_string];
-#elif __ANDROID__
-    return android_get_clipboard();
-#endif
+    return legacy_platform_services().clipboard_text();
 }
 
 bool App::clipboard_set_text(const std::string& s)
@@ -82,15 +146,7 @@ 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__
-    return [ios_view clipboard_set_string:s];
-#elif __OSX__
-    return [osx_view clipboard_set_string:s];
-#elif __ANDROID__
-    return android_set_clipboard(s);
-#endif
+    return legacy_platform_services().set_clipboard_text(s);
 }
 
 void App::stacktrace()
@@ -138,9 +194,9 @@ void App::show_cursor()
         return;
 
 #ifdef _WIN32
-    win32_show_cursor(true);
+    legacy_platform_services().set_cursor_visible(true);
 #elif __OSX__
-    [osx_view show_cursor:true];
+    legacy_platform_services().set_cursor_visible(true);
 #endif
 }
 
@@ -150,9 +206,9 @@ void App::hide_cursor()
         return;
 
 #ifdef _WIN32
-    win32_show_cursor(false);
+    legacy_platform_services().set_cursor_visible(false);
 #elif __OSX__
-    [osx_view show_cursor:false];
+    legacy_platform_services().set_cursor_visible(false);
 #endif
 }
 
@@ -163,11 +219,9 @@ void App::showKeyboard()
     if (!should_dispatch_keyboard_visibility(true))
         return;
 #ifdef __IOS__
-    dispatch_async(dispatch_get_main_queue(), ^{
-        [ios_view show_keyboard];
-    });
+    legacy_platform_services().set_virtual_keyboard_visible(true);
 #elif __ANDROID__
-    displayKeyboard(true);
+    legacy_platform_services().set_virtual_keyboard_visible(true);
 #endif
 }
 
@@ -178,11 +232,9 @@ void App::hideKeyboard()
     if (!should_dispatch_keyboard_visibility(false))
         return;
 #ifdef __IOS__
-    dispatch_async(dispatch_get_main_queue(), ^{
-        [ios_view hide_keyboard];
-    });
+    legacy_platform_services().set_virtual_keyboard_visible(false);
 #elif __ANDROID__
-    displayKeyboard(false);
+    legacy_platform_services().set_virtual_keyboard_visible(false);
 #endif
 }