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-rw-r--r--Xamarin.Forms.Platform.Tizen/Native/SearchBar.cs423
1 files changed, 423 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Tizen/Native/SearchBar.cs b/Xamarin.Forms.Platform.Tizen/Native/SearchBar.cs
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+++ b/Xamarin.Forms.Platform.Tizen/Native/SearchBar.cs
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+using System;
+using ElmSharp;
+using EColor = ElmSharp.Color;
+using ESize = ElmSharp.Size;
+using ERect = ElmSharp.Rect;
+using ERectangle = ElmSharp.Rectangle;
+
+namespace Xamarin.Forms.Platform.Tizen.Native
+{
+ /// <summary>
+ /// Provides implementation of the search bar widget.
+ /// </summary>
+ public class SearchBar : Canvas, IMeasurable
+ {
+ /// <summary>
+ /// The height of the background of the search bar.
+ /// </summary>
+ const int BackgroundHeight = 120;
+
+ /// <summary>
+ /// The style of the cancel button.
+ /// </summary>
+ const string CancelButtonLayoutStyle = "editfield_clear";
+
+ /// <summary>
+ /// The horizontal padding of the cancel button.
+ /// </summary>
+ const int CancelButtonPaddingHorizontal = 17;
+
+ /// <summary>
+ /// The size of the cancel button.
+ /// </summary>
+ const int CancelButtonSize = 80;
+
+ /// <summary>
+ /// The height of the entry.
+ /// </summary>
+ const int EntryHeight = 54;
+
+ /// <summary>
+ /// The horizontal padding of the entry.
+ /// </summary>
+ const int EntryPaddingHorizontal = 42;
+
+ /// <summary>
+ /// The vertical padding of the entry.
+ /// </summary>
+ const int EntryPaddingVertical = 33;
+
+ /// <summary>
+ /// The height of the rectangle used to draw underline effect.
+ /// </summary>
+ const int RectangleHeight = 2;
+
+ /// <summary>
+ /// The bottom padding of the rectangle used to draw underline effect.
+ /// </summary>
+ const int RectanglePaddingBottom = 20;
+
+ /// <summary>
+ /// The horizontal padding of the rectangle used to draw underline effect.
+ /// </summary>
+ const int RectanglePaddingHorizontal = 32;
+
+ /// <summary>
+ /// The top padding of the rectangle used to draw underline effect.
+ /// </summary>
+ const int RectanglePaddingTop = 11;
+
+ //TODO: read default platform color
+
+ /// <summary>
+ /// The color of the underline rectangle.
+ /// </summary>
+ static readonly EColor s_underlineColor = EColor.Aqua;
+
+ /// <summary>
+ /// The dimmed color of the underline rectangle.
+ /// </summary>
+ static readonly EColor s_underlineDimColor = EColor.Gray;
+
+ /// <summary>
+ /// The cancel button.
+ /// </summary>
+ Button _cancelButton;
+
+ /// <summary>
+ /// The text entry.
+ /// </summary>
+ Entry _entry;
+
+ /// <summary>
+ /// The underline rectangle.
+ /// </summary>
+ ERectangle _underlineRectangle;
+
+ /// <summary>
+ /// Initializes a new instance of the <see cref="Xamarin.Forms.Platform.Tizen.Native.SearchBar"/> class.
+ /// </summary>
+ /// <param name="parent">Parent evas object.</param>
+ public SearchBar(EvasObject parent) : base(parent)
+ {
+ _entry = new Entry(parent)
+ {
+ IsSingleLine = true,
+ };
+ _entry.SetInputPanelReturnKeyType(InputPanelReturnKeyType.Search);
+ _entry.TextChanged += EntryTextChanged;
+ _entry.Activated += EntryActivated;
+ _entry.Focused += EntryFocused;
+ _entry.Unfocused += EntryUnfocused;
+ _entry.Show();
+
+ _cancelButton = new Button(parent);
+ _cancelButton.Style = CancelButtonLayoutStyle;
+ _cancelButton.Clicked += CancelButtonClicked;
+
+ _underlineRectangle = new ERectangle(parent)
+ {
+ Color = IsEnabled ? s_underlineColor : s_underlineDimColor,
+ };
+ _underlineRectangle.Show();
+
+ Children.Add(_entry);
+ Children.Add(_cancelButton);
+ Children.Add(_underlineRectangle);
+
+ Show();
+
+ this.LayoutUpdated += SearchBarLayoutUpdated;
+ }
+
+ /// <summary>
+ /// Occurs when the search button on the keyboard is pressed.
+ /// </summary>
+ public event EventHandler SearchButtonPressed;
+
+ /// <summary>
+ /// Occurs when the entry's text has changed.
+ /// </summary>
+ public event EventHandler<TextChangedEventArgs> TextChanged;
+
+ /// <summary>
+ /// Gets or sets the color of the cancel button.
+ /// </summary>
+ /// <value>Color of the cancel button.</value>
+ public EColor CancelButtonColor
+ {
+ get
+ {
+ return _cancelButton.Color;
+ }
+
+ set
+ {
+ if (!_cancelButton.Color.Equals(value))
+ {
+ _cancelButton.Color = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the font attributes of the search bar's entry.
+ /// </summary>
+ /// <value>The font attributes.</value>
+ public FontAttributes FontAttributes
+ {
+ get
+ {
+ return _entry.FontAttributes;
+ }
+
+ set
+ {
+ if (value != _entry.FontAttributes)
+ {
+ _entry.FontAttributes = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the font family of the search bar's entry.
+ /// </summary>
+ /// <value>The font family.</value>
+ public string FontFamily
+ {
+ get
+ {
+ return _entry.FontFamily;
+ }
+
+ set
+ {
+ if (value != _entry.FontFamily)
+ {
+ _entry.FontFamily = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the size of the font of the search bar's entry.
+ /// </summary>
+ /// <value>The size of the font.</value>
+ public double FontSize
+ {
+ get
+ {
+ return _entry.FontSize;
+ }
+
+ set
+ {
+ if (value != _entry.FontSize)
+ {
+ _entry.FontSize = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the horizontal text alignment of the search bar's entry.
+ /// </summary>
+ /// <value>The horizontal text alignment.</value>
+ public TextAlignment HorizontalTextAlignment
+ {
+ get
+ {
+ return _entry.HorizontalTextAlignment;
+ }
+
+ set
+ {
+ if (value != _entry.HorizontalTextAlignment)
+ {
+ _entry.HorizontalTextAlignment = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the placeholder of the search bar's entry.
+ /// </summary>
+ /// <value>The placeholder.</value>
+ public string Placeholder
+ {
+ get
+ {
+ return _entry.Placeholder;
+ }
+
+ set
+ {
+ if (value != _entry.Placeholder)
+ {
+ _entry.Placeholder = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the color of the placeholder.
+ /// </summary>
+ /// <value>The color of the placeholder.</value>
+ public EColor PlaceholderColor
+ {
+ get
+ {
+ return _entry.PlaceholderColor;
+ }
+
+ set
+ {
+ if (!_entry.PlaceholderColor.Equals(value))
+ {
+ _entry.PlaceholderColor = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the text of the search bar's entry.
+ /// </summary>
+ /// <value>The text.</value>
+ public override string Text
+ {
+ get
+ {
+ return _entry.Text;
+ }
+
+ set
+ {
+ if (value != _entry.Text)
+ {
+ _entry.Text = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Gets or sets the color of the text.
+ /// </summary>
+ /// <value>The color of the text.</value>
+ public EColor TextColor
+ {
+ get
+ {
+ return _entry.TextColor;
+ }
+
+ set
+ {
+ if (!_entry.TextColor.Equals(value))
+ {
+ _entry.TextColor = value;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Implementation of the IMeasurable.Measure() method.
+ /// </summary>
+ public ESize Measure(int availableWidth, int availableHeight)
+ {
+ ESize entrySize = _entry.Measure(availableWidth, availableHeight);
+ int width = entrySize.Width + (CancelButtonPaddingHorizontal * 2) + CancelButtonSize;
+ return new ESize(width, BackgroundHeight);
+ }
+
+ /// <summary>
+ /// Handles the event triggered by the cancel button being clicked.
+ /// </summary>
+ /// <param name="sender">Sender of the event.</param>
+ /// <param name="e">Event arguments, ignored.</param>
+ void CancelButtonClicked(object sender, EventArgs e)
+ {
+ _entry.Text = string.Empty;
+ _cancelButton.Hide();
+ }
+
+ /// <summary>
+ /// Handles the event triggered by clicking the search button on the keyboard.
+ /// </summary>
+ /// <param name="sender">Sender of the event.</param>
+ /// <param name="e">Event arguments, ignored.</param>
+ void EntryActivated(object sender, EventArgs e)
+ {
+ SearchButtonPressed?.Invoke(this, EventArgs.Empty);
+ }
+
+ /// <summary>
+ /// Handles the event triggered by entry gaining the focus.
+ /// </summary>
+ /// <param name="sender">Sender of the event.</param>
+ /// <param name="e">Event arguments, ignored.</param>
+ void EntryFocused(object sender, EventArgs e)
+ {
+ _underlineRectangle.Color = s_underlineColor;
+ }
+
+ /// <summary>
+ /// Handles the event triggered by entry's text being changed.
+ /// </summary>
+ /// <param name="sender">Sender of the event.</param>
+ /// <param name="e">Event arguments.</param>
+ void EntryTextChanged(object sender, TextChangedEventArgs e)
+ {
+ if (string.IsNullOrEmpty(e.NewTextValue))
+ {
+ _cancelButton.Hide();
+ }
+ else if (!_cancelButton.IsVisible)
+ {
+ _cancelButton.Show();
+ }
+ TextChanged?.Invoke(this, e);
+ }
+
+ /// <summary>
+ /// Handles the event triggered by entry losing the focus.
+ /// </summary>
+ /// <param name="sender">Sender of the event.</param>
+ /// <param name="e">Event arguments, ignored.</param>
+ void EntryUnfocused(object sender, EventArgs e)
+ {
+ _underlineRectangle.Color = s_underlineDimColor;
+ }
+
+ /// <summary>
+ /// Handles the event triggered by search bar's layout being changed.
+ /// </summary>
+ /// <remarks>
+ /// Updates the geometry of the widgets comprising the search bar.
+ /// </remarks>
+ /// <param name="sender">Sender of the event.</param>
+ /// <param name="e">Event arguments.</param>
+ void SearchBarLayoutUpdated(object sender, LayoutEventArgs e)
+ {
+ if (!e.HasChanged)
+ {
+ return;
+ }
+
+ _underlineRectangle.Geometry = new ERect(Geometry.Left + RectanglePaddingHorizontal,
+ Geometry.Top + EntryPaddingVertical + EntryHeight + RectanglePaddingTop,
+ Geometry.Width - (RectanglePaddingHorizontal * 2),
+ RectangleHeight);
+
+ _entry.Geometry = new ERect(Geometry.Left + EntryPaddingHorizontal,
+ Geometry.Top + EntryPaddingVertical,
+ Geometry.Width - (EntryPaddingHorizontal + (CancelButtonPaddingHorizontal * 2) + CancelButtonSize),
+ EntryHeight);
+
+ _cancelButton.Geometry = new ERect(Geometry.Right - CancelButtonSize - CancelButtonPaddingHorizontal,
+ Geometry.Top + RectanglePaddingBottom,
+ CancelButtonSize,
+ CancelButtonSize);
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-13 05:23:37 +0000