224 lines
8.7 KiB
C#
224 lines
8.7 KiB
C#
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using System;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Media;
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namespace OpenSEMI.Ctrlib.Controls
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{
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public class EditTextBlock : TextBlock
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{
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static EditTextBlock()
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{
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DefaultStyleKeyProperty.OverrideMetadata(typeof(EditTextBlock), new FrameworkPropertyMetadata(typeof(EditTextBlock)));
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}
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public static readonly DependencyProperty IsInEditModeProperty =
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DependencyProperty.Register("IsInEditMode", typeof(bool), typeof(EditTextBlock), new UIPropertyMetadata(false, IsInEditModeUpdate));
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public bool IsInEditMode
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{
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get
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{
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return (bool)GetValue(IsInEditModeProperty);
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}
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set
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{
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SetValue(IsInEditModeProperty, value);
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}
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}
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private static void IsInEditModeUpdate(DependencyObject obj, DependencyPropertyChangedEventArgs e)
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{
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EditTextBlock textBlock = obj as EditTextBlock;
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if (null != textBlock)
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{
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//Get the adorner layer of the uielement (here TextBlock)
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AdornerLayer layer = AdornerLayer.GetAdornerLayer(textBlock);
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if (layer == null)
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return;
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//If the IsInEditMode set to true means the user has enabled the edit mode then
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//add the adorner to the adorner layer of the TextBlock.
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if (textBlock.IsInEditMode)
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{
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if (null == textBlock._adorner)
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{
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textBlock._adorner = new EditTextBlockAdorner(textBlock);
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//Events wired to exit edit mode when the user presses Enter key or leaves the control.
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textBlock._adorner.TextBoxKeyUp += textBlock.TextBoxKeyUp;
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textBlock._adorner.TextBoxLostFocus += textBlock.TextBoxLostFocus;
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textBlock._adorner.TextBox.SelectAll();
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}
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layer.Add(textBlock._adorner);
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}
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else
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{
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//Remove the adorner from the adorner layer.
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Adorner[] adorners = layer.GetAdorners(textBlock);
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if (adorners != null)
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{
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foreach (Adorner adorner in adorners)
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{
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if (adorner is EditTextBlockAdorner)
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{
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layer.Remove(adorner);
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}
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}
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}
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}
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}
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}
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private void TextBoxLostFocus(object sender, RoutedEventArgs e)
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{
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IsInEditMode = false;
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TextBoxEx atb = sender as TextBoxEx;
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if (atb == null)
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return;
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if (this.EditBoxMode == EditBoxMode.Decimal || this.EditBoxMode == EditBoxMode.UnSignDecimal ||
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this.EditBoxMode == EditBoxMode.SignInteger || this.EditBoxMode == EditBoxMode.UnSignInteger)
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{
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double dataValue = 0;
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if (!double.TryParse(atb.Text, out dataValue))
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return;
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if (MinValue == MaxValue && MinValue == 0)
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return;
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this.Background = (dataValue < MinValue || dataValue > MaxValue) ? Brushes.Red : Brushes.Transparent;
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}
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}
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/// <summary>
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/// release the edit mode when user presses enter.
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/// </summary>
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/// <param name="sender">The sender.</param>
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/// <param name="e">The <see cref="System.Windows.Input.KeyEventArgs"/> instance containing the event data.</param>
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private void TextBoxKeyUp(object sender, KeyEventArgs e)
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{
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if (e.Key == Key.Enter)
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{
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IsInEditMode = false;
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TextBoxEx atb = sender as TextBoxEx;
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if (atb == null)
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return;
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if (this.EditBoxMode == EditBoxMode.Decimal || this.EditBoxMode == EditBoxMode.UnSignDecimal ||
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this.EditBoxMode == EditBoxMode.SignInteger || this.EditBoxMode == EditBoxMode.UnSignInteger)
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{
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double dataValue = 0;
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if (!double.TryParse(atb.Text, out dataValue))
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return;
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if (MinValue == MaxValue && MinValue == 0)
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return;
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this.Background = (dataValue < MinValue || dataValue > MaxValue) ? Brushes.Red : Brushes.Transparent;
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}
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}
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}
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/// <summary>
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/// Invoked when an unhandled <see cref="E:System.Windows.Input.Mouse.MouseDown"/> attached event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
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/// </summary>
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/// <param name="e">The <see cref="T:System.Windows.Input.MouseButtonEventArgs"/> that contains the event data. This event data reports details about the mouse button that was pressed and the handled state.</param>
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protected override void OnMouseDown(MouseButtonEventArgs e)
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{
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if (e.MiddleButton == MouseButtonState.Pressed)
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{
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IsInEditMode = true;
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}
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else if (e.ClickCount == 1)
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{
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IsInEditMode = true;
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}
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}
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#region EditTextBox properties
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public EditBoxMode EditBoxMode
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{
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get { return (EditBoxMode)GetValue(EditBoxModeProperty); }
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set { SetValue(EditBoxModeProperty, value); }
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}
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public static readonly DependencyProperty EditBoxModeProperty = DependencyProperty.Register("EditBoxMode", typeof(EditBoxMode), typeof(EditTextBlock), new UIPropertyMetadata(EditBoxMode.Default));
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private bool m_AllowEmpty = true;
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public bool AllowEmpty
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{
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get { return m_AllowEmpty; }
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set { m_AllowEmpty = value; }
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}
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/// <summary>
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/// This is a flag to indicate that whether to change the bg color
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/// when the text changed by backgroud not by GUI side.
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/// This flag is true when control is bound to display text from dialog
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/// </summary>
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private bool m_AllowBackgroundChange = false;
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public bool AllowBackgroundChange
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{
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get { return m_AllowBackgroundChange; }
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set { m_AllowBackgroundChange = value; }
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}
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public static readonly DependencyProperty MaxValueProperty = DependencyProperty.Register("MaxValue", typeof(double), typeof(EditTextBlock), new UIPropertyMetadata(double.NaN));
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public double MaxValue
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{
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get { return (double)GetValue(MaxValueProperty); }
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set { SetValue(MaxValueProperty, value); }
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}
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public double MinValue
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{
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get { return (double)GetValue(MinValueProperty); }
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set { SetValue(MinValueProperty, value); }
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}
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public static readonly DependencyProperty MinValueProperty = DependencyProperty.Register("MinValue", typeof(double), typeof(EditTextBlock), new UIPropertyMetadata(double.NaN));
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public Int32 Accuracy
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{
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get { return (Int32)GetValue(AccuracyProperty); }
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set { SetValue(AccuracyProperty, value); }
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}
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public static readonly DependencyProperty AccuracyProperty = DependencyProperty.Register("Accuracy", typeof(Int32), typeof(EditTextBlock), new UIPropertyMetadata(4));
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public bool TextSaved
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{
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get { return (bool)GetValue(TextSavedProperty); }
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set { SetValue(TextSavedProperty, value); }
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}
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public static readonly DependencyProperty TextSavedProperty =
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DependencyProperty.Register("TextSaved", typeof(bool), typeof(EditTextBlock),
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new UIPropertyMetadata(true, new PropertyChangedCallback(TextSavedChangedCallBack)));
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public Boolean IsScrollToEnd
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{
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get { return (Boolean)GetValue(ScrollToEndProperty); }
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set { SetValue(ScrollToEndProperty, value); }
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}
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public static readonly DependencyProperty ScrollToEndProperty = DependencyProperty.Register("IsScrollToEnd", typeof(Boolean), typeof(EditTextBlock), new UIPropertyMetadata(false));
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private static void TextSavedChangedCallBack(DependencyObject d, DependencyPropertyChangedEventArgs args)
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{
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EditTextBlock m_txt = d as EditTextBlock;
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if (m_txt != null)
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{
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//SetBGColor(m_txt);
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}
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}
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#endregion
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private EditTextBlockAdorner _adorner;
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}
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}
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