From 014bef9eab9fb409cfb3ec66830e033e4aaa29a9 Mon Sep 17 00:00:00 2001
From: Cameron Cawley
Date: Thu, 19 Sep 2019 22:20:08 +0100
Subject: BACKENDS: Add a default clipboard implementation

---
 common/system.h | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

(limited to 'common/system.h')

diff --git a/common/system.h b/common/system.h
index f17625e215..ae0575f0e8 100644
--- a/common/system.h
+++ b/common/system.h
@@ -216,6 +216,12 @@ protected:
 	 */
 	FilesystemFactory *_fsFactory;
 
+	/**
+	 * Used by the default clipboard implementation, for backends that don't
+	 * implement clipboard support.
+	 */
+	Common::String _clipboard;
+
 private:
 	/**
 	 * Indicate if initBackend() has been called.
@@ -374,8 +380,11 @@ public:
 		kFeatureDisplayLogFile,
 
 		/**
-		 * The presence of this feature indicates whether the hasTextInClipboard(),
-		 * getTextFromClipboard() and setTextInClipboard() calls are supported.
+		 * The presence of this feature indicates whether the system clipboard is
+		 * available. If this feature is not present, the hasTextInClipboard(),
+		 * getTextFromClipboard() and setTextInClipboard() calls can still be used,
+		 * however it should not be used in scenarios where the user is expected to
+		 * copy data outside of the application.
 		 *
 		 * This feature has no associated state.
 		 */
@@ -1451,7 +1460,7 @@ public:
 	 *
 	 * @return true if there is text in the clipboard, false otherwise
 	 */
-	virtual bool hasTextInClipboard() { return false; }
+	virtual bool hasTextInClipboard() { return !_clipboard.empty(); }
 
 	/**
 	 * Returns clipboard contents as a String.
@@ -1462,7 +1471,7 @@ public:
 	 *
 	 * @return clipboard contents ("" if hasTextInClipboard() == false)
 	 */
-	virtual Common::String getTextFromClipboard() { return ""; }
+	virtual Common::String getTextFromClipboard() { return _clipboard; }
 
 	/**
 	 * Set the content of the clipboard to the given string.
@@ -1473,7 +1482,7 @@ public:
 	 *
 	 * @return true if the text was properly set in the clipboard, false otherwise
 	 */
-	virtual bool setTextInClipboard(const Common::String &text) { return false; }
+	virtual bool setTextInClipboard(const Common::String &text) { _clipboard = text; return true; }
 
 	/**
 	 * Open the given Url in the default browser (if available on the target
-- 
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