diff options
Diffstat (limited to 'lisp/bindings.el')
| -rw-r--r-- | lisp/bindings.el | 62 |
1 files changed, 53 insertions, 9 deletions
diff --git a/lisp/bindings.el b/lisp/bindings.el index ac84add3617..60823445b97 100644 --- a/lisp/bindings.el +++ b/lisp/bindings.el @@ -124,17 +124,61 @@ corresponding to the mode line clicked." ;;; Mode line contents -(defcustom mode-line-default-help-echo - "mouse-1: Select (drag to resize)\n\ -mouse-2: Make current window occupy the whole frame\n\ -mouse-3: Remove current window from display" +(defun mode-line-default-help-echo (window) + "Return default help echo text for WINDOW's mode line." + (let* ((frame (window-frame window)) + (line-1a + ;; Show text to select window only if the window is not + ;; selected. + (not (eq window (frame-selected-window frame)))) + (line-1b + ;; Show text to drag mode line if either the window is not + ;; at the bottom of its frame or the minibuffer window of + ;; this frame can be resized. This matches a corresponding + ;; check in `mouse-drag-mode-line'. + (or (not (window-at-side-p window 'bottom)) + (let ((mini-window (minibuffer-window frame))) + (and (eq frame (window-frame mini-window)) + (or (minibuffer-window-active-p mini-window) + (not resize-mini-windows)))))) + (line-2 + ;; Show text make window occupy the whole frame + ;; only if it doesn't already do that. + (not (eq window (frame-root-window frame)))) + (line-3 + ;; Show text to delete window only if that's possible. + (not (eq window (frame-root-window frame))))) + (when (or line-1a line-1b line-2 line-3) + (concat + (when (or line-1a line-1b) + (concat + "mouse-1: " + (when line-1a "Select window") + (when line-1b + (if line-1a " (drag to resize)" "Drag to resize")) + (when (or line-2 line-3) "\n"))) + (when line-2 + (concat + "mouse-2: Make window occupy whole frame" + (when line-3 "\n"))) + (when line-3 + "mouse-3: Remove window from frame"))))) + +(defcustom mode-line-default-help-echo #'mode-line-default-help-echo "Default help text for the mode line. If the value is a string, it specifies the tooltip or echo area message to display when the mouse is moved over the mode line. -If the text at the mouse position has a `help-echo' text -property, that overrides this variable." - :type '(choice (const :tag "No help" :value nil) string) - :version "24.3" +If the value is a function, call that function with one argument +- the window whose mode line to display. If the text at the +mouse position has a `help-echo' text property, that overrides +this variable." + :type '(choice + (const :tag "No help" :value nil) + function + (string :value "mouse-1: Select (drag to resize)\n\ +mouse-2: Make current window occupy the whole frame\n\ +mouse-3: Remove current window from display")) + :version "27.1" :group 'mode-line) (defvar mode-line-front-space '(:eval (if (display-graphic-p) " " "-")) @@ -699,7 +743,7 @@ okay. See `mode-line-format'.") buffer-file-format buffer-auto-save-file-format buffer-display-count buffer-display-time enable-multibyte-characters - buffer-file-coding-system)) + buffer-file-coding-system truncate-lines)) ;; We have base64, md5 and sha1 functions built in now. (provide 'base64) |