Merge branch 'master' into openslxopenslx

1 files changed, 109 insertions, 0 deletions

diff --git a/src/include/ipxe/widget.h b/src/include/ipxe/widget.h
new file mode 100644
index 000000000..6e61a8ca8
--- /dev/null
+++ b/src/include/ipxe/widget.h
@@ -0,0 +1,109 @@
+#ifndef _IPXE_WIDGET_H
+#define _IPXE_WIDGET_H
+
+/** @file
+ *
+ * Text widgets
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+FILE_SECBOOT ( PERMITTED );
+
+#include <curses.h>
+
+/** A text widget */
+struct widget {
+	/** Widget operations */
+	struct widget_operations *op;
+
+	/** Row */
+	unsigned int row;
+	/** Starting column */
+	unsigned int col;
+	/** Width */
+	unsigned int width;
+	/** Flags */
+	unsigned int flags;
+};
+
+/** Text widget flags */
+enum widget_flags {
+	/** Widget may have input focus */
+	WIDGET_EDITABLE = 0x0001,
+	/** Widget contains a secret */
+	WIDGET_SECRET = 0x0002,
+};
+
+/** Text widget operations */
+struct widget_operations {
+	/**
+	 * Draw widget
+	 *
+	 * @v widget		Text widget
+	 */
+	void ( * draw ) ( struct widget *widget );
+	/**
+	 * Edit widget
+	 *
+	 * @v widget		Text widget
+	 * @v key		Key pressed by user
+	 * @ret key		Key returned to application, or zero
+	 *
+	 * This will not update the display: you must call the draw()
+	 * method to ensure that any changes to an editable widget are
+	 * displayed to the user.
+	 */
+	int ( * edit ) ( struct widget *widget, int key );
+};
+
+/**
+ * Initialise text widget
+ *
+ * @v widget		Text widget
+ * @v op		Text widget operations
+ * @v row		Row
+ * @v col		Starting column
+ * @v width		Width
+ */
+static inline __attribute__ (( always_inline )) void
+init_widget ( struct widget *widget, struct widget_operations *op,
+	      unsigned int row, unsigned int col, unsigned int width,
+	      unsigned int flags ) {
+
+	widget->op = op;
+	widget->row = row;
+	widget->col = col;
+	widget->width = width;
+	widget->flags = flags;
+}
+
+/**
+ * Draw text widget
+ *
+ * @v widget		Text widget
+ */
+static inline __attribute__ (( always_inline )) void
+draw_widget ( struct widget *widget ) {
+
+	widget->op->draw ( widget );
+}
+
+/**
+ * Edit text widget
+ *
+ * @v widget		Text widget
+ * @v key		Key pressed by user
+ * @ret key		Key returned to application, or zero
+ *
+ * This will not update the display: you must call draw_widget() to
+ * ensure that any changes to an editable widget are displayed to the
+ * user.
+ */
+static inline __attribute__ (( always_inline )) int
+edit_widget ( struct widget *widget, int key ) {
+
+	return widget->op->edit ( widget, key );
+}
+
+#endif /* _IPXE_WIDGET_H */