using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.ComponentModel.Design;
using System.ComponentModel;
using System.Drawing;

namespace DevComponents.DotNetBar.Layout.Design
{
    public class LayoutGroupDesigner : LayoutItemBaseDesigner
    {
        #region Constructor

        #endregion

        #region Implementation

        public override System.Collections.ICollection AssociatedComponents
        {
            get
            {
                LayoutGroup group = (LayoutGroup)this.Component;

                if (group.Items.Count>0)
                {
                    ArrayList list = new ArrayList();
                    foreach (LayoutItemBase child in group.Items)
                    {
                        if (child.Site != null)
                            list.Add(child);
                    }
                    return list;
                }

                return base.AssociatedComponents;
            }
        }

        public override DesignerVerbCollection Verbs
        {
            get
            {
                DesignerVerb[] verbs;
                verbs = new DesignerVerb[]
				{
                    new DesignerVerb("Add Spacer", new EventHandler(AddSpacerItem)),
                    new DesignerVerb("Add Group", new EventHandler(AddGroupItem)),
					new DesignerVerb("Apply Panel Style", new EventHandler(PanelStyle)),
                    new DesignerVerb("Apply Group Panel Style", new EventHandler(GroupPanelStyle)),
                    new DesignerVerb("Remove Panel Style", new EventHandler(RemovePanelStyle))
				};
                return new DesignerVerbCollection(verbs);
            }
        }
        private void AddSpacerItem(object sender, EventArgs e)
        {
            AddSpacerItem();
        }

        private void AddSpacerItem()
        {
            IDesignerHost dh = (IDesignerHost)GetService(typeof(IDesignerHost));
            LayoutGroup lc = this.Component as LayoutGroup;
            if (lc == null || dh == null)
                return;

            DesignerTransaction dt = dh.CreateTransaction("Creating Spacer Item");
            try
            {
                IComponentChangeService cc = this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
                if (cc != null)
                {
                    cc.OnComponentChanging(this.Component, null);
                    cc.OnComponentChanging(lc, TypeDescriptor.GetProperties(lc)["Items"]);
                }

                LayoutSpacerItem item = null;
                item = dh.CreateComponent(typeof(LayoutSpacerItem)) as LayoutSpacerItem;
                item.Width = 32;
                item.Height = 32;
                lc.Items.Add(item);
                lc.InvalidateLayout();
                if (cc != null)
                {
                    cc.OnComponentChanged(lc, TypeDescriptor.GetProperties(lc)["Items"], null, null);
                    cc.OnComponentChanged(this.Component, null, null, null);
                }

                SelectComponent(item, SelectionTypes.Replace);
            }
            catch
            {
                dt.Cancel();
            }
            finally
            {
                if (!dt.Canceled) dt.Commit();
            }
        }

        private void AddGroupItem(object sender, EventArgs e)
        {
            AddGroupItem();
        }

        private void AddGroupItem()
        {
            IDesignerHost dh = (IDesignerHost)GetService(typeof(IDesignerHost));
            LayoutGroup lc = this.Component as LayoutGroup;
            if (lc == null || dh == null)
                return;

            DesignerTransaction dt = dh.CreateTransaction("Creating Group Item");
            try
            {
                IComponentChangeService cc = this.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
                if (cc != null)
                {
                    cc.OnComponentChanging(this.Component, null);
                    cc.OnComponentChanging(lc, TypeDescriptor.GetProperties(lc)["Items"]);
                }

                LayoutGroup item = null;
                item = dh.CreateComponent(typeof(LayoutGroup)) as LayoutGroup;
                item.Width = 200;
                item.Height = 100;
                item.TextPosition = eLayoutPosition.Top;
                item.MinSize = new Size(120, 32);
                lc.Items.Add(item);
                lc.InvalidateLayout();
                if (cc != null)
                {
                    cc.OnComponentChanged(lc, TypeDescriptor.GetProperties(lc)["Items"], null, null);
                    cc.OnComponentChanged(this.Component, null, null, null);
                }

                SelectComponent(item, SelectionTypes.Replace);
            }
            catch
            {
                dt.Cancel();
            }
            finally
            {
                if (!dt.Canceled) dt.Commit();
            }
        }

        private void PanelStyle(object sender, EventArgs e)
        {
            LayoutGroup group = (LayoutGroup)this.Component;
            IDesignerHost dh = (IDesignerHost)GetService(typeof(IDesignerHost));
            if (group == null || dh == null)
                return;

            DesignerTransaction dt = dh.CreateTransaction("Apply Panel Style");

            TypeDescriptor.GetProperties(group)["Appearance"].SetValue(group, eGroupAppearance.Panel); // group.Appearance = eGroupAppearance.Panel;
            TypeDescriptor.GetProperties(group)["CaptionHeight"].SetValue(group, 22); // group.CaptionHeight = 22;
            TypeDescriptor.GetProperties(group)["TextLineAlignment"].SetValue(group, DevComponents.DotNetBar.Layout.eTextLineAlignment.Middle); // group.TextLineAlignment = DevComponents.DotNetBar.Layout.eTextLineAlignment.Middle;
            TypeDescriptor.GetProperties(group)["TextPosition"].SetValue(group, DevComponents.DotNetBar.Layout.eLayoutPosition.Top); // group.TextPosition = DevComponents.DotNetBar.Layout.eLayoutPosition.Top;
            TypeDescriptor.GetProperties(group)["TextAlignment"].SetValue(group, eTextAlignment.Default); // group.TextAlignment = eTextAlignment.Default;
            if (string.IsNullOrEmpty(group.Text))
                TypeDescriptor.GetProperties(group)["Text"].SetValue(group, "Caption"); // group.Text = "Caption";

            dt.Commit();
            
        }

        private void GroupPanelStyle(object sender, EventArgs e)
        {
            LayoutGroup group = (LayoutGroup)this.Component;
            IDesignerHost dh = (IDesignerHost)GetService(typeof(IDesignerHost));
            if (group == null || dh == null)
                return;

            DesignerTransaction dt = dh.CreateTransaction("Apply Group Panel Style");

            TypeDescriptor.GetProperties(group)["Appearance"].SetValue(group, eGroupAppearance.GroupPanel); // group.Appearance = eGroupAppearance.GroupPanel;
            TypeDescriptor.GetProperties(group)["CaptionHeight"].SetValue(group, 18); // group.CaptionHeight = 18;
            TypeDescriptor.GetProperties(group)["TextLineAlignment"].SetValue(group, DevComponents.DotNetBar.Layout.eTextLineAlignment.Middle); // group.TextLineAlignment = DevComponents.DotNetBar.Layout.eTextLineAlignment.Middle;
            TypeDescriptor.GetProperties(group)["TextPosition"].SetValue(group, DevComponents.DotNetBar.Layout.eLayoutPosition.Top); // group.TextPosition = DevComponents.DotNetBar.Layout.eLayoutPosition.Top;
            TypeDescriptor.GetProperties(group)["TextAlignment"].SetValue(group, eTextAlignment.Center); // group.TextAlignment = eTextAlignment.Center;
            if (string.IsNullOrEmpty(group.Text))
                TypeDescriptor.GetProperties(group)["Text"].SetValue(group, "Caption"); // group.Text = "Caption";

            dt.Commit();
        }

        private void RemovePanelStyle(object sender, EventArgs e)
        {
            LayoutGroup group = (LayoutGroup)this.Component;
            IDesignerHost dh = (IDesignerHost)GetService(typeof(IDesignerHost));
            if (group == null || dh == null)
                return;

            DesignerTransaction dt = dh.CreateTransaction("Remove Panel Style");

            TypeDescriptor.GetProperties(group)["Appearance"].SetValue(group, eGroupAppearance.None); // group.Appearance = eGroupAppearance.None;
            TypeDescriptor.GetProperties(group)["TextLineAlignment"].SetValue(group, DevComponents.DotNetBar.Layout.eTextLineAlignment.Default); // group.TextLineAlignment = DevComponents.DotNetBar.Layout.eTextLineAlignment.Default;
            TypeDescriptor.GetProperties(group)["CaptionHeight"].SetValue(group, 0); // group.CaptionHeight = 0;
            TypeDescriptor.GetProperties(group)["TextPosition"].SetValue(group, DevComponents.DotNetBar.Layout.eLayoutPosition.Default); // group.TextPosition = DevComponents.DotNetBar.Layout.eLayoutPosition.Default;
            TypeDescriptor.GetProperties(group)["TextAlignment"].SetValue(group, eTextAlignment.Default); // group.TextAlignment = eTextAlignment.Default;
            TypeDescriptor.GetProperties(group)["Text"].SetValue(group, ""); // group.Text = "Caption";
            dt.Commit();
            
        }

        protected virtual void SelectComponent(IComponent comp, SelectionTypes selectionType)
        {
            ISelectionService selection = (ISelectionService)this.GetService(typeof(ISelectionService));
            if (selection != null && comp != null)
            {
                ArrayList arr = new ArrayList(1);
                arr.Add(comp);
                selection.SetSelectedComponents(arr, selectionType);
            }
        }
        #endregion
    }
}