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* UIComboBox: 增加过滤

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Sunny 2022-04-15 23:41:32 +08:00
parent 8beb5042ca
commit 38908bbab6
3 changed files with 245 additions and 38 deletions
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8
SunnyUI/Controls/DropItem/UIDropControl.cs
View File

@ -184,7 +184,7 @@ namespace Sunny.UI
public bool DroppedDown => itemForm is { Visible: true };
private int symbolNormal = 61703;
private int dropSymbol = 61703;
protected int dropSymbol = 61703;
[DefaultValue(61703)]
[Description("正常显示时字体图标"), Category("SunnyUI")]
@ -228,11 +228,17 @@ namespace Sunny.UI
{
_dropDownStyle = value;
edit.Visible = value == UIDropDownStyle.DropDown;
DropDownStyleChanged();
Invalidate();
}
}
}
protected virtual void DropDownStyleChanged()
{
}
public event EventHandler ButtonClick;
protected readonly UIEdit edit = new UIEdit();

4
SunnyUI/Controls/UIComboBox.Designer.cs generated
View File

@ -30,10 +30,6 @@
{
this.SuspendLayout();
//
// edit
//
this.edit.KeyDown += new System.Windows.Forms.KeyEventHandler(this.edit_KeyDown);
//
// UIComboBox
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;

271
SunnyUI/Controls/UIComboBox.cs
View File

@ -24,6 +24,7 @@
* 2021-08-15: V3.0.6 重写了水印文字的画法，并增加水印文字颜色
* 2022-01-16: V3.1.0 增加了下拉框颜色设置
* 2022-04-13: V3.1.3 根据Text自动选中SelectIndex
* 2022-04-15: V3.1.3 增加过滤
******************************************************************************/
using System;
@ -51,20 +52,130 @@ namespace Sunny.UI
ListBox.SelectedValueChanged += ListBox_SelectedValueChanged;
ListBox.ItemsClear += ListBox_ItemsClear;
ListBox.ItemsRemove += ListBox_ItemsRemove;
edit.TextChanged += Edit_TextChanged;
edit.KeyDown += Edit_KeyDown;
DropDownWidth = 150;
fullControlSelect = true;
}
private void ShowDropDownFilter()
{
FilterItemForm.AutoClose = false;
if (!FilterItemForm.Visible)
{
FilterItemForm.Show(this, new Size(DropDownWidth < Width ? Width : DropDownWidth, CalcItemFormHeight()));
edit.Focus();
}
}
private void Edit_KeyDown(object sender, KeyEventArgs e)
{
if (ShowFilter)
{
int cnt = filterForm.ListBox.Items.Count;
int idx = filterForm.ListBox.SelectedIndex;
if (e.KeyCode == Keys.Down || e.KeyCode == Keys.Up)
{
ShowDropDownFilter();
if (cnt > 0)
{
if (e.KeyCode == Keys.Down)
{
if (idx < cnt - 1)
filterForm.ListBox.SelectedIndex++;
}
if (e.KeyCode == Keys.Up)
{
if (idx > 0)
filterForm.ListBox.SelectedIndex--;
}
}
}
else if (e.KeyCode == Keys.Escape)
{
FilterItemForm.Close();
}
else if (e.KeyCode == Keys.Return)
{
if (FilterItemForm.Visible)
{
if (cnt > 0 && idx >= 0 && idx < cnt)
{
SelectTextChange = true;
Text = filterForm.ListBox.GetItemText(filterForm.ListBox.Items[idx]);
edit.SelectionStart = Text.Length;
SelectedValueChanged?.Invoke(this, EventArgs.Empty);
SelectTextChange = false;
}
FilterItemForm.Close();
}
else
{
ShowDropDownFilter();
}
}
else
{
base.OnKeyDown(e);
}
}
else
{
if (e.KeyCode == Keys.Enter)
{
ShowDropDown();
}
else if (e.KeyCode == Keys.Escape)
{
ItemForm.Close();
}
else
{
base.OnKeyDown(e);
}
}
}
private bool showFilter;
[DefaultValue(false)]
[Description("显示过滤"), Category("SunnyUI")]
public bool ShowFilter
{
get => showFilter;
set
{
showFilter = value;
if (value)
{
DropDownStyle = UIDropDownStyle.DropDown;
}
}
}
[DefaultValue(false)]
[Description("过滤显示最大条目数"), Category("SunnyUI")]
public int FilterMaxCount { get; set; } = 50;
protected override void DropDownStyleChanged()
{
if (DropDownStyle == UIDropDownStyle.DropDownList)
{
showFilter = false;
}
}
CurrencyManager dataManager;
private void InitStrings()
{
if (DropDownStyle == UIDropDownStyle.DropDown && DataSource != null && DisplayMember.IsValid())
{
strings.Clear();
for (int i = 0; i < Items.Count; i++)
{
strings.Add(GetItemText(Items[i]));
}
dataManager = (CurrencyManager)BindingContext[DataSource, new BindingMemberInfo(DisplayMember).BindingPath];
}
}
@ -120,15 +231,64 @@ namespace Sunny.UI
private void Edit_TextChanged(object sender, EventArgs e)
{
TextChanged?.Invoke(this, e);
if (Text.IsValid() && DropDownStyle == UIDropDownStyle.DropDown && !SelectTextChange)
if (DropDownStyle == UIDropDownStyle.DropDownList) return;
if (!ShowFilter)
{
if (DataSource == null)
if (SelectTextChange) return;
if (Text.IsValid())
{
SelectedIndex = Items.IndexOf(Text);
ListBox.ListBox.Text = Text;
}
else
{
SelectedIndex = strings.IndexOf(Text);
SelectTextChange = true;
SelectedIndex = -1;
edit.Text = "";
SelectTextChange = false;
}
}
else
{
if (edit.Focused && Text.IsValid())
{
ShowDropDownFilter();
}
filterForm.ListBox.Items.Clear();
if (Text.IsValid())
{
if (DataSource == null)
{
foreach (var item in Items)
{
if (item.ToString().Contains(Text))
{
filterForm.ListBox.Items.Add(item.ToString());
if (filterForm.ListBox.Items.Count > FilterMaxCount) break;
}
}
}
else
{
if (dataManager != null)
{
List<object> list = new List<object>();
for (int i = 0; i < Items.Count; i++)
{
if (GetItemText(dataManager.List[i]).ToString().Contains(Text))
{
list.Add(dataManager.List[i]);
if (list.Count > FilterMaxCount) break;
}
}
foreach (var item in list)
{
filterForm.ListBox.Items.Add(GetItemText(item));
}
}
}
}
}
}
@ -160,7 +320,7 @@ namespace Sunny.UI
private void Box_SelectedIndexChanged(object sender, EventArgs e)
{
SelectTextChange = true;
if (ListBox.SelectedItem != null)
if (ListBox.SelectedItem != null && !ShowFilter)
Text = ListBox.GetItemText(ListBox.SelectedItem);
SelectTextChange = false;
SelectedIndexChanged?.Invoke(this, e);
@ -178,17 +338,44 @@ namespace Sunny.UI
protected override void ItemForm_ValueChanged(object sender, object value)
{
//if (SelectedIndex != ListBox.SelectedIndex)
//{
// SelectedIndex = ListBox.SelectedIndex;
// //Box_SelectedIndexChanged(null, null);
// Invalidate();
//}
Invalidate();
}
private readonly UIComboBoxItem dropForm = new UIComboBoxItem();
private readonly UIComboBoxItem filterForm = new UIComboBoxItem();
private UIDropDown filterItemForm;
private UIDropDown FilterItemForm
{
get
{
if (filterItemForm == null)
{
filterItemForm = new UIDropDown(filterForm);
if (filterItemForm != null)
{
//filterItemForm.ValueChanged += FilterItemForm_ValueChanged;
filterItemForm.VisibleChanged += FilterItemForm_VisibleChanged;
//filterItemForm.Closed += FilterItemForm_Closed;
}
}
return filterItemForm;
}
}
private void FilterItemForm_VisibleChanged(object sender, EventArgs e)
{
dropSymbol = SymbolNormal;
if (filterItemForm.Visible)
{
dropSymbol = SymbolDropDown;
}
Invalidate();
}
protected override void CreateInstance()
{
@ -206,6 +393,11 @@ namespace Sunny.UI
get => dropForm.ListBox;
}
private ListBox FilterListBox
{
get => dropForm.ListBox.ListBox;
}
[DefaultValue(25)]
[Description("列表项高度"), Category("SunnyUI")]
public int ItemHeight
@ -224,6 +416,11 @@ namespace Sunny.UI
{
ListBox.Font = Font;
}
if (filterForm != null)
{
filterForm.ListBox.Font = Font;
}
}
public void ShowDropDown()
@ -231,13 +428,25 @@ namespace Sunny.UI
UIComboBox_ButtonClick(this, EventArgs.Empty);
}
List<string> strings = new List<string>();
private void UIComboBox_ButtonClick(object sender, EventArgs e)
{
if (Items.Count > 0)
if (!ShowFilter)
{
ItemForm.Show(this, new Size(DropDownWidth < Width ? Width : DropDownWidth, CalcItemFormHeight()));
if (Items.Count > 0)
{
ItemForm.Show(this, new Size(DropDownWidth < Width ? Width : DropDownWidth, CalcItemFormHeight()));
}
}
else
{
if (FilterItemForm.Visible)
{
FilterItemForm.Close();
}
else
{
ShowDropDownFilter();
}
}
}
@ -355,26 +564,22 @@ namespace Sunny.UI
]
public object SelectedValue
{
get => ListBox.SelectedValue;
set => ListBox.SelectedValue = value;
get => ShowFilter ? FilterListBox.SelectedValue : ListBox.SelectedValue;
set
{
if (!ShowFilter)
ListBox.SelectedValue = value;
}
}
public string GetItemText(object item)
{
return ListBox.GetItemText(item);
return ShowFilter ? FilterListBox.GetItemText(item) : ListBox.GetItemText(item);
}
private void UIComboBox_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
ShowDropDown();
}
}
private void edit_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
if (e.KeyCode == Keys.Enter && !ShowFilter)
{
ShowDropDown();
}