This commit was manufactured by cvs2svn to create branch 'XEmacs-21_4'.

[chise/xemacs-chise.git.1] / lisp / select.el

diff --git a/lisp/select.el b/lisp/select.el
index db01d6a..ef3072e 100644 (file)
--- a/lisp/select.el
+++ b/lisp/select.el
@@ -40,6 +40,11 @@ COMPOUND_TEXT and STRING are the most commonly used data types.
 If a list is provided, the types are tried in sequence until
 there is a successful conversion.")
 
+(defvar selection-sets-clipboard nil 
+  "Controls the selection's relationship to the clipboard.
+When non-nil, any operation that sets the primary selection will also
+set the clipboard.")
+
 (defun copy-primary-selection ()
   "Copy the selection to the Clipboard and the kill ring."
   (interactive)
@@ -61,20 +66,34 @@ there is a successful conversion.")
 (defun yank-clipboard-selection ()
   "Insert the current Clipboard selection at point."
   (interactive "*")
-  (case (device-type (selected-device))
-    (x (x-yank-clipboard-selection))
-    (mswindows (mswindows-paste-clipboard))
-    (otherwise nil)))
+  (when (console-on-window-system-p)
+    (setq last-command nil)
+    (setq this-command 'yank) ; so that yank-pop works.
+    (let ((clip (get-clipboard)))
+      (or clip (error "there is no clipboard selection"))
+      (push-mark)
+      (insert clip))))
+
+(defun get-clipboard ()
+  "Return text pasted to the clipboard."
+  (get-selection 'CLIPBOARD))
 
 (define-device-method get-cutbuffer
   "Return the value of one of the cut buffers.
 This will do nothing under anything other than X.")
 
+(defun get-selection-no-error (&optional type data-type)
+  "Return the value of a Windows selection.
+The argument TYPE (default `PRIMARY') says which selection,
+and the argument DATA-TYPE (default `STRING', or `COMPOUND_TEXT' under Mule)
+says how to convert the data. Returns NIL if there is no selection"
+  (condition-case err (get-selection type data-type) (t nil)))
+
 (defun get-selection (&optional type data-type)
   "Return the value of a Windows selection.
 The argument TYPE (default `PRIMARY') says which selection,
 and the argument DATA-TYPE (default `STRING', or `COMPOUND_TEXT' under Mule)
-says how to convert the data."
+says how to convert the data. If there is no selection an error is signalled."
   (or type (setq type 'PRIMARY))
   (or data-type (setq data-type selected-text-type))
   (let ((text
@@ -127,9 +146,12 @@ Interactively, the text of the region is used as the selection value."
             valid))
       (signal 'error (list "invalid selection" data)))
   (or type (setq type 'PRIMARY))
-  (if data
-      (own-selection-internal type data)
-    (disown-selection-internal type))
+  (if (null data)
+      (disown-selection-internal type)
+    (own-selection-internal type data)
+    (when (and (eq type 'PRIMARY)
+              selection-sets-clipboard)
+      (own-selection-internal 'CLIPBOARD data)))
   (cond ((eq type 'PRIMARY)
         (setq primary-selection-extent
               (select-make-extent-for-selection
@@ -163,13 +185,18 @@ Interactively, the text of the region is used as the selection value."
 (setq lost-selection-hooks 'dehilight-selection)
 
 (defun own-clipboard (string)
-  "Paste the given string to the X Clipboard."
+  "Paste the given string to the window system Clipboard."
   (own-selection string 'CLIPBOARD))
 
 (defun disown-selection (&optional secondary-p)
   "Assuming we own the selection, disown it.  With an argument, discard the
 secondary selection instead of the primary selection."
-  (disown-selection-internal (if secondary-p 'SECONDARY 'PRIMARY)))
+  (disown-selection-internal (if secondary-p 'SECONDARY 'PRIMARY))
+  (when (and selection-sets-clipboard
+            (or (not secondary-p)
+                (eq secondary-p 'PRIMARY)
+                (eq secondary-p 'CLIPBOARD)))
+    (disown-selection-internal 'CLIPBOARD)))
 
 ;; from x-init.el
 ;; selections and active regions