diff options
Diffstat (limited to 'Xamarin.Forms.Platform.iOS/Cells/EntryCellRenderer.cs')
| -rw-r--r-- | Xamarin.Forms.Platform.iOS/Cells/EntryCellRenderer.cs | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.iOS/Cells/EntryCellRenderer.cs b/Xamarin.Forms.Platform.iOS/Cells/EntryCellRenderer.cs new file mode 100644 index 00000000..1af49b4a --- /dev/null +++ b/Xamarin.Forms.Platform.iOS/Cells/EntryCellRenderer.cs @@ -0,0 +1,186 @@ +using System; +using System.ComponentModel; +using System.Drawing; +#if __UNIFIED__ +using UIKit; +#else +using MonoTouch.UIKit; +#endif +#if __UNIFIED__ +using RectangleF = CoreGraphics.CGRect; +using SizeF = CoreGraphics.CGSize; +using PointF = CoreGraphics.CGPoint; + +#else +using nfloat=System.Single; +using nint=System.Int32; +using nuint=System.UInt32; +#endif + +namespace Xamarin.Forms.Platform.iOS +{ + public class EntryCellRenderer : CellRenderer + { + static readonly Color DefaultTextColor = Color.Black; + + public override UITableViewCell GetCell(Cell item, UITableViewCell reusableCell, UITableView tv) + { + var entryCell = (EntryCell)item; + + var tvc = reusableCell as EntryCellTableViewCell; + if (tvc == null) + tvc = new EntryCellTableViewCell(item.GetType().FullName); + else + { + tvc.Cell.PropertyChanged -= OnCellPropertyChanged; + tvc.TextFieldTextChanged -= OnTextFieldTextChanged; + tvc.KeyboardDoneButtonPressed -= OnKeyBoardDoneButtonPressed; + } + + SetRealCell(item, tvc); + + tvc.Cell = item; + tvc.Cell.PropertyChanged += OnCellPropertyChanged; + tvc.TextFieldTextChanged += OnTextFieldTextChanged; + tvc.KeyboardDoneButtonPressed += OnKeyBoardDoneButtonPressed; + + WireUpForceUpdateSizeRequested(item, tvc, tv); + + UpdateBackground(tvc, entryCell); + UpdateLabel(tvc, entryCell); + UpdateText(tvc, entryCell); + UpdateKeyboard(tvc, entryCell); + UpdatePlaceholder(tvc, entryCell); + UpdateLabelColor(tvc, entryCell); + UpdateHorizontalTextAlignment(tvc, entryCell); + UpdateIsEnabled(tvc, entryCell); + + return tvc; + } + + static void OnCellPropertyChanged(object sender, PropertyChangedEventArgs e) + { + var entryCell = (EntryCell)sender; + var realCell = (EntryCellTableViewCell)GetRealCell(entryCell); + + if (e.PropertyName == EntryCell.LabelProperty.PropertyName) + UpdateLabel(realCell, entryCell); + else if (e.PropertyName == EntryCell.TextProperty.PropertyName) + UpdateText(realCell, entryCell); + else if (e.PropertyName == EntryCell.PlaceholderProperty.PropertyName) + UpdatePlaceholder(realCell, entryCell); + else if (e.PropertyName == EntryCell.KeyboardProperty.PropertyName) + UpdateKeyboard(realCell, entryCell); + else if (e.PropertyName == EntryCell.LabelColorProperty.PropertyName) + UpdateLabelColor(realCell, entryCell); + else if (e.PropertyName == EntryCell.HorizontalTextAlignmentProperty.PropertyName) + UpdateHorizontalTextAlignment(realCell, entryCell); + else if (e.PropertyName == Cell.IsEnabledProperty.PropertyName) + UpdateIsEnabled(realCell, entryCell); + } + + static void OnKeyBoardDoneButtonPressed(object sender, EventArgs e) + { + var cell = (EntryCellTableViewCell)sender; + var model = (EntryCell)cell.Cell; + + model.SendCompleted(); + } + + static void OnTextFieldTextChanged(object sender, EventArgs eventArgs) + { + var cell = (EntryCellTableViewCell)sender; + var model = (EntryCell)cell.Cell; + + model.Text = cell.TextField.Text; + } + + static void UpdateHorizontalTextAlignment(EntryCellTableViewCell cell, EntryCell entryCell) + { + cell.TextField.TextAlignment = entryCell.HorizontalTextAlignment.ToNativeTextAlignment(); + } + + static void UpdateIsEnabled(EntryCellTableViewCell cell, EntryCell entryCell) + { + cell.UserInteractionEnabled = entryCell.IsEnabled; + cell.TextLabel.Enabled = entryCell.IsEnabled; + cell.DetailTextLabel.Enabled = entryCell.IsEnabled; + cell.TextField.Enabled = entryCell.IsEnabled; + } + + static void UpdateKeyboard(EntryCellTableViewCell cell, EntryCell entryCell) + { + cell.TextField.ApplyKeyboard(entryCell.Keyboard); + } + + static void UpdateLabel(EntryCellTableViewCell cell, EntryCell entryCell) + { + cell.TextLabel.Text = entryCell.Label; + } + + static void UpdateLabelColor(EntryCellTableViewCell cell, EntryCell entryCell) + { + cell.TextLabel.TextColor = entryCell.LabelColor.ToUIColor(DefaultTextColor); + } + + static void UpdatePlaceholder(EntryCellTableViewCell cell, EntryCell entryCell) + { + cell.TextField.Placeholder = entryCell.Placeholder; + } + + static void UpdateText(EntryCellTableViewCell cell, EntryCell entryCell) + { + if (cell.TextField.Text == entryCell.Text) + return; + // double sets side effect on iOS, YAY + cell.TextField.Text = entryCell.Text; + } + + class EntryCellTableViewCell : CellTableViewCell + { + public EntryCellTableViewCell(string cellName) : base(UITableViewCellStyle.Value1, cellName) + { + TextField = new UITextField(new RectangleF(0, 0, 100, 30)) { BorderStyle = UITextBorderStyle.None }; + + TextField.EditingChanged += TextFieldOnEditingChanged; + TextField.ShouldReturn = OnShouldReturn; + + ContentView.AddSubview(TextField); + } + + public UITextField TextField { get; } + + public event EventHandler KeyboardDoneButtonPressed; + + public override void LayoutSubviews() + { + base.LayoutSubviews(); + + // simple algorithm to generally line up entries + var start = (nfloat)Math.Round(Math.Max(Frame.Width * 0.3, TextLabel.Frame.Right + 10)); + TextField.Frame = new RectangleF(start, (Frame.Height - 30) / 2, Frame.Width - TextLabel.Frame.Left - start, 30); + // Centers TextField Content (iOS6) + TextField.VerticalAlignment = UIControlContentVerticalAlignment.Center; + } + + public event EventHandler TextFieldTextChanged; + + bool OnShouldReturn(UITextField view) + { + var handler = KeyboardDoneButtonPressed; + if (handler != null) + handler(this, EventArgs.Empty); + + TextField.ResignFirstResponder(); + return true; + } + + void TextFieldOnEditingChanged(object sender, EventArgs eventArgs) + { + var handler = TextFieldTextChanged; + if (handler != null) + handler(this, EventArgs.Empty); + } + } + } +}
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