|
|
@@ -0,0 +1,179 @@
|
|
|
+using System;
|
|
|
+using System.Collections.Generic;
|
|
|
+using System.Linq;
|
|
|
+
|
|
|
+namespace Terminal {
|
|
|
+ /// <summary>
|
|
|
+ /// Button view
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// Provides a button that can be clicked, or pressed with
|
|
|
+ /// the enter key and processes hotkeys (the first uppercase
|
|
|
+ /// letter in the button becomes the hotkey).
|
|
|
+ /// </remarks>
|
|
|
+ public class Button : View {
|
|
|
+ string text;
|
|
|
+ string shown_text;
|
|
|
+ char hot_key;
|
|
|
+ int hot_pos = -1;
|
|
|
+ bool is_default;
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Clicked event, raised when the button is clicked.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// Client code can hook up to this event, it is
|
|
|
+ /// raised when the button is activated either with
|
|
|
+ /// the mouse or the keyboard.
|
|
|
+ /// </remarks>
|
|
|
+ public event EventHandler Clicked;
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Public constructor, creates a button based on
|
|
|
+ /// the given text at position 0,0
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// The size of the button is computed based on the
|
|
|
+ /// text length. This button is not a default button.
|
|
|
+ /// </remarks>
|
|
|
+ public Button (string s) : this (0, 0, s) { }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Public constructor, creates a button based on
|
|
|
+ /// the given text.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// If the value for is_default is true, a special
|
|
|
+ /// decoration is used, and the enter key on a
|
|
|
+ /// dialog would implicitly activate this button.
|
|
|
+ /// </remarks>
|
|
|
+ public Button (string s, bool is_default) : this (0, 0, s, is_default) { }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Public constructor, creates a button based on
|
|
|
+ /// the given text at the given position.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// The size of the button is computed based on the
|
|
|
+ /// text length. This button is not a default button.
|
|
|
+ /// </remarks>
|
|
|
+ public Button (int x, int y, string s) : this (x, y, s, false) { }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// The text displayed by this widget.
|
|
|
+ /// </summary>
|
|
|
+ public string Text {
|
|
|
+ get {
|
|
|
+ return text;
|
|
|
+ }
|
|
|
+
|
|
|
+ set {
|
|
|
+ text = value;
|
|
|
+ if (is_default)
|
|
|
+ shown_text = "[< " + value + " >]";
|
|
|
+ else
|
|
|
+ shown_text = "[ " + value + " ]";
|
|
|
+
|
|
|
+ hot_pos = -1;
|
|
|
+ hot_key = (char)0;
|
|
|
+ int i = 0;
|
|
|
+ foreach (char c in shown_text) {
|
|
|
+ if (Char.IsUpper (c)) {
|
|
|
+ hot_key = c;
|
|
|
+ hot_pos = i;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ i++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Public constructor, creates a button based on
|
|
|
+ /// the given text at the given position.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// If the value for is_default is true, a special
|
|
|
+ /// decoration is used, and the enter key on a
|
|
|
+ /// dialog would implicitly activate this button.
|
|
|
+ /// </remarks>
|
|
|
+ public Button (int x, int y, string s, bool is_default)
|
|
|
+ : base (new Rect (x, y, s.Length + 4 + (is_default ? 2 : 0), 1))
|
|
|
+ {
|
|
|
+ CanFocus = true;
|
|
|
+
|
|
|
+ this.is_default = is_default;
|
|
|
+ Text = s;
|
|
|
+ }
|
|
|
+
|
|
|
+ public override void Redraw (Rect region)
|
|
|
+ {
|
|
|
+ Driver.SetAttribute (HasFocus ? Colors.Base.Focus : Colors.Base.Normal);
|
|
|
+ Move (0, 0);
|
|
|
+ Driver.AddStr (shown_text);
|
|
|
+
|
|
|
+ if (hot_pos != -1) {
|
|
|
+ Move (hot_pos, 0);
|
|
|
+ Driver.SetAttribute (HasFocus ? Colors.Base.HotFocus: Colors.Base.HotNormal);
|
|
|
+ Driver.AddCh (hot_key);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ public override void PositionCursor ()
|
|
|
+ {
|
|
|
+ Move (hot_pos, 0);
|
|
|
+ }
|
|
|
+
|
|
|
+ bool CheckKey (KeyEvent key)
|
|
|
+ {
|
|
|
+ if (Char.ToUpper ((char)key.KeyValue) == hot_key) {
|
|
|
+ this.SetFocus (this);
|
|
|
+ if (Clicked != null)
|
|
|
+ Clicked (this, EventArgs.Empty);
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ public override bool ProcessHotKey (KeyEvent kb)
|
|
|
+ {
|
|
|
+ if (kb.IsAlt)
|
|
|
+ return CheckKey (kb);
|
|
|
+
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ public override bool ProcessColdKey (KeyEvent kb)
|
|
|
+ {
|
|
|
+ if (is_default && kb.KeyValue == '\n') {
|
|
|
+ if (Clicked != null)
|
|
|
+ Clicked (this, EventArgs.Empty);
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ return CheckKey (kb);
|
|
|
+ }
|
|
|
+
|
|
|
+ public override bool ProcessKey (KeyEvent kb)
|
|
|
+ {
|
|
|
+ var c = kb.KeyValue;
|
|
|
+ if (c == '\n' || c == ' ' || Char.ToUpper ((char)c) == hot_key) {
|
|
|
+ if (Clicked != null)
|
|
|
+ Clicked (this, EventArgs.Empty);
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+#if false
|
|
|
+ public override void ProcessMouse (Curses.MouseEvent ev)
|
|
|
+ {
|
|
|
+ if ((ev.ButtonState & Curses.Event.Button1Clicked) != 0) {
|
|
|
+ Container.SetFocus (this);
|
|
|
+ Container.Redraw ();
|
|
|
+ if (Clicked != null)
|
|
|
+ Clicked (this, EventArgs.Empty);
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ }
|
|
|
+}
|
Miguel de Icaza