From 38908bbab6285c05d3ed97da58c46637d0f3ea73 Mon Sep 17 00:00:00 2001 From: Sunny Date: Fri, 15 Apr 2022 23:41:32 +0800 Subject: [PATCH] =?UTF-8?q?*=20UIComboBox:=20=E5=A2=9E=E5=8A=A0=E8=BF=87?= =?UTF-8?q?=E6=BB=A4?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- SunnyUI/Controls/DropItem/UIDropControl.cs | 8 +- SunnyUI/Controls/UIComboBox.Designer.cs | 4 - SunnyUI/Controls/UIComboBox.cs | 271 ++++++++++++++++++--- 3 files changed, 245 insertions(+), 38 deletions(-) diff --git a/SunnyUI/Controls/DropItem/UIDropControl.cs b/SunnyUI/Controls/DropItem/UIDropControl.cs index 03ac80c6..347f8492 100644 --- a/SunnyUI/Controls/DropItem/UIDropControl.cs +++ b/SunnyUI/Controls/DropItem/UIDropControl.cs @@ -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(); diff --git a/SunnyUI/Controls/UIComboBox.Designer.cs b/SunnyUI/Controls/UIComboBox.Designer.cs index 2f0a24f5..abfe1691 100644 --- a/SunnyUI/Controls/UIComboBox.Designer.cs +++ b/SunnyUI/Controls/UIComboBox.Designer.cs @@ -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; diff --git a/SunnyUI/Controls/UIComboBox.cs b/SunnyUI/Controls/UIComboBox.cs index f9ae7441..e8681abb 100644 --- a/SunnyUI/Controls/UIComboBox.cs +++ b/SunnyUI/Controls/UIComboBox.cs @@ -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 list = new List(); + 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 strings = new List(); - 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(); }