DotNet 4.8.1 build of DotNetBar
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258
PROMS/DotNetBar Source Code/BaseItemDesigner.cs
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258
PROMS/DotNetBar Source Code/BaseItemDesigner.cs
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.ComponentModel.Design;
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using System.Drawing;
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using System.Windows.Forms;
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namespace DevComponents.DotNetBar
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{
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/// <summary>
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/// Represents designer for BaseItem objects and derived classes.
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/// </summary>
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public class BaseItemDesigner:System.ComponentModel.Design.ComponentDesigner,IDesignerServices
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{
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#region Internal Implementation
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/// <summary>
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/// Creates new instance of the class.
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/// </summary>
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public BaseItemDesigner()
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{
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}
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public override void Initialize(IComponent component)
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{
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base.Initialize(component);
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if(!component.Site.DesignMode)
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return;
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ISelectionService ss =(ISelectionService)GetService(typeof(ISelectionService));
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if(ss!=null)
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ss.SelectionChanged+=new EventHandler(OnSelectionChanged);
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BaseItem c=component as BaseItem;
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if(c!=null)
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this.Visible=c.Visible;
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// If our component is removed we need to clean-up
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IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
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if(cc!=null)
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{
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cc.ComponentRemoved+=new ComponentEventHandler(this.OnComponentRemoved);
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}
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}
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protected override void Dispose(bool disposing)
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{
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ISelectionService ss =(ISelectionService)GetService(typeof(ISelectionService));
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if(ss!=null)
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ss.SelectionChanged-=new EventHandler(OnSelectionChanged);
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IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
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if(cc!=null)
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{
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cc.ComponentRemoved-=new ComponentEventHandler(this.OnComponentRemoved);
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}
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base.Dispose(disposing);
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}
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private void OnComponentRemoved(object sender,ComponentEventArgs e)
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{
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if(e.Component is BaseItem)
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{
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BaseItem parent=this.Component as BaseItem;
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BaseItem item=e.Component as BaseItem;
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if(item!=null && parent!=null && parent.SubItems.Contains(item))
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{
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IComponentChangeService cc=(IComponentChangeService)GetService(typeof(IComponentChangeService));
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if(cc!=null)
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cc.OnComponentChanging(parent,TypeDescriptor.GetProperties(parent)["SubItems"]);
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parent.SubItems.Remove(item);
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if(cc!=null)
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cc.OnComponentChanged(parent,TypeDescriptor.GetProperties(parent)["SubItems"],null,null);
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this.RecalcLayout();
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}
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}
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}
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private void OnSelectionChanged(object sender, EventArgs e)
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{
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ISelectionService ss = (ISelectionService)sender;
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if(ss!=null && ss.PrimarySelection!=this.Component && ss.PrimarySelection is BaseItem)
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{
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BaseItem item=this.Component as BaseItem;
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if(item!=null)
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{
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BaseItem selected=ss.PrimarySelection as BaseItem;
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IOwner owner=item.GetOwner() as IOwner;
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if(owner!=null)
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{
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if(owner.GetItem(selected.Name)!=selected)
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owner.SetFocusItem(null);
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}
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}
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}
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}
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public override DesignerVerbCollection Verbs
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{
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get
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{
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DesignerVerb[] verbs = new DesignerVerb[]
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{
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new DesignerVerb("Create Button", new EventHandler(CreateButton)),
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new DesignerVerb("Create Text Box", new EventHandler(CreateTextBox)),
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new DesignerVerb("Create Combo Box", new EventHandler(CreateComboBox)),
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new DesignerVerb("Create Label", new EventHandler(CreateLabel)),
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};
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return new DesignerVerbCollection(verbs);
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}
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}
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protected virtual void CreateButton(object sender, EventArgs e)
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{
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CreateNewItem(typeof(ButtonItem));
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}
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protected virtual void CreateComboBox(object sender, EventArgs e)
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{
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CreateNewItem(typeof(ComboBoxItem));
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}
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protected virtual void CreateLabel(object sender, EventArgs e)
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{
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CreateNewItem(typeof(LabelItem));
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}
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protected virtual void CreateTextBox(object sender, EventArgs e)
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{
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CreateNewItem(typeof(TextBoxItem));
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}
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protected virtual void CreateNewItem(Type itemType)
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{
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BaseItem parent=this.Component as BaseItem;
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System.ComponentModel.Design.IDesignerHost dh=(System.ComponentModel.Design.IDesignerHost)GetService(typeof(System.ComponentModel.Design.IDesignerHost));
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System.ComponentModel.Design.IComponentChangeService change=this.GetService(typeof(System.ComponentModel.Design.IComponentChangeService)) as IComponentChangeService;
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if(change!=null)
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change.OnComponentChanging(this.Component,TypeDescriptor.GetProperties(parent).Find("SubItems",true));
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BaseItem item=dh.CreateComponent(itemType) as BaseItem;
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if(item==null)
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return;
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item.Text=item.Name;
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BeforeNewItemAdded(item);
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parent.SubItems.Add(item);
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AfterNewItemAdded(item);
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if(change!=null)
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change.OnComponentChanged(this.Component,TypeDescriptor.GetProperties(parent).Find("SubItems",true),null,null);
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this.RecalcLayout();
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}
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protected virtual void BeforeNewItemAdded(BaseItem item) {}
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protected virtual void AfterNewItemAdded(BaseItem item) {}
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protected virtual void RecalcLayout()
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{
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BaseItem item=this.Component as BaseItem;
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System.Windows.Forms.Control control=item.ContainerControl as System.Windows.Forms.Control;
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if(control is Bar)
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((Bar)control).RecalcLayout();
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else if(control is ExplorerBar)
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((ExplorerBar)control).RecalcLayout();
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else if(control is BarBaseControl)
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((BarBaseControl)control).RecalcLayout();
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else if(control is SideBar)
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((SideBar)control).RecalcLayout();
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}
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public override System.Collections.ICollection AssociatedComponents
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{
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get
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{
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System.Collections.ArrayList components=new System.Collections.ArrayList();
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BaseItem parent=this.Component as BaseItem;
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if(parent==null)
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return base.AssociatedComponents;
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parent.SubItems.CopyTo(components);
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return components;
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}
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}
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protected override void PreFilterProperties(IDictionary properties)
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{
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base.PreFilterProperties(properties);
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properties["Visible"] = TypeDescriptor.CreateProperty(typeof(BaseItemDesigner),(PropertyDescriptor)properties["Visible"], new Attribute[]
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{
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new DefaultValueAttribute(true),
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new BrowsableAttribute(true),
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new CategoryAttribute("Layout")});
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properties["CanCustomize"] = TypeDescriptor.CreateProperty(typeof(BaseItemDesigner),(PropertyDescriptor)properties["CanCustomize"], new Attribute[]
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{
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new DefaultValueAttribute(true),
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new BrowsableAttribute(true),
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new CategoryAttribute("Behavior"),
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new DescriptionAttribute("Indicates whether item can be customized by user.")});
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}
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/// <summary>
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/// Gets or sets whether item can be customized by end user.
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/// </summary>
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[System.ComponentModel.Browsable(true),DevCoBrowsable(true),System.ComponentModel.DefaultValue(true),System.ComponentModel.Category("Behavior"),System.ComponentModel.Description("Indicates whether item can be customized by user.")]
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public virtual bool CanCustomize
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{
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get
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{
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return (bool)ShadowProperties["CanCustomize"];
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}
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set
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{
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// this value is not passed to the actual control
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this.ShadowProperties["CanCustomize"] = value;
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}
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}
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/// <summary>
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/// Gets or sets whether item is visible.
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/// </summary>
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[DefaultValue(true),Browsable(true),DevCoBrowsable(true),Category("Layout"),Description("Gets or sets whether item is visible.")]
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public bool Visible
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{
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get
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{
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return (bool)ShadowProperties["Visible"];
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}
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set
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{
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// this value is not passed to the actual control
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this.ShadowProperties["Visible"] = value;
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}
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}
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#endregion
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#region IDesignerServices Implementation
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object IDesignerServices.CreateComponent(System.Type componentClass)
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{
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IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
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if(dh==null)
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return null;
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return dh.CreateComponent(componentClass);
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}
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void IDesignerServices.DestroyComponent(IComponent c)
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{
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IDesignerHost dh=(IDesignerHost)GetService(typeof(IDesignerHost));
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if(dh==null)
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return;
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dh.DestroyComponent(c);
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}
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object IDesignerServices.GetService(Type serviceType)
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{
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return this.GetService(serviceType);
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}
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#endregion
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}
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}
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