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Viewing changes to external/xwt/Xwt.Mac/Xwt.Mac/TableViewBackend.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/xwt/Xwt.Mac/Xwt.Mac/TableViewBackend.cs
 
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// 
 
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// TableViewBackend.cs
 
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//  
 
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// Author:
 
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//       Lluis Sanchez <lluis@xamarin.com>
 
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// 
 
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// Copyright (c) 2011 Xamarin Inc
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using MonoMac.AppKit;
 
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using Xwt.Backends;
 
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using System.Collections.Generic;
 
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using MonoMac.Foundation;
 
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using Xwt.Engine;
 
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namespace Xwt.Mac
 
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{
 
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        public abstract class TableViewBackend<T,S>: ViewBackend<NSScrollView,S>, ICellSource where T:NSTableView where S:ITableViewEventSink
 
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        {
 
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                List<NSTableColumn> cols = new List<NSTableColumn> ();
 
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                protected NSTableView Table;
 
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                ScrollView scroll;
 
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                NSObject selChangeObserver;
 
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                public TableViewBackend ()
 
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                {
 
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                }
 
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                public override void Initialize ()
 
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                {
 
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                        Table = CreateView ();
 
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                        scroll = new ScrollView ();
 
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                        scroll.DocumentView = Table;
 
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                        ViewObject = scroll;
 
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                        Table.SizeToFit ();
 
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                        Widget.AutoresizingMask = NSViewResizingMask.HeightSizable | NSViewResizingMask.WidthSizable;
 
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                        Widget.AutoresizesSubviews = true;
 
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                }
 
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                public ScrollPolicy VerticalScrollPolicy {
 
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                        get {
 
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                                if (scroll.AutohidesScrollers && scroll.HasVerticalScroller)
 
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                                        return ScrollPolicy.Automatic;
 
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                                else if (scroll.HasVerticalScroller)
 
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                                        return ScrollPolicy.Always;
 
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                                else
 
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                                        return ScrollPolicy.Never;
 
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                        }
 
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                        set {
 
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                                switch (value) {
 
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                                case ScrollPolicy.Automatic:
 
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                                        scroll.AutohidesScrollers = true;
 
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                                        scroll.HasVerticalScroller = true;
 
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                                        break;
 
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                                case ScrollPolicy.Always:
 
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                                        scroll.AutohidesScrollers = false;
 
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                                        scroll.HasVerticalScroller = true;
 
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                                        break;
 
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                                case ScrollPolicy.Never:
 
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                                        scroll.HasVerticalScroller = false;
 
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                                        break;
 
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                                }
 
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                        }
 
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                }
 
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                public ScrollPolicy HorizontalScrollPolicy {
 
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                        get {
 
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                                if (scroll.AutohidesScrollers && scroll.HasHorizontalScroller)
 
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                                        return ScrollPolicy.Automatic;
 
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                                else if (scroll.HasHorizontalScroller)
 
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                                        return ScrollPolicy.Always;
 
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                                else
 
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                                        return ScrollPolicy.Never;
 
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                        }
 
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                        set {
 
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                                switch (value) {
 
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                                case ScrollPolicy.Automatic:
 
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                                        scroll.AutohidesScrollers = true;
 
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                                        scroll.HasHorizontalScroller = true;
 
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                                        break;
 
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                                case ScrollPolicy.Always:
 
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                                        scroll.AutohidesScrollers = false;
 
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                                        scroll.HasHorizontalScroller = true;
 
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                                        break;
 
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                                case ScrollPolicy.Never:
 
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                                        scroll.HasHorizontalScroller = false;
 
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                                        break;
 
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                                }
 
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                        }
 
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                }
 
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                protected override Size GetNaturalSize ()
 
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                {
 
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                        return EventSink.GetDefaultNaturalSize ();
 
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                }
 
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                protected abstract NSTableView CreateView ();
 
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                protected abstract string SelectionChangeEventName { get; }
 
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                public override void EnableEvent (object eventId)
 
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                {
 
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                        base.EnableEvent (eventId);
 
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                        if (eventId is TableViewEvent) {
 
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                                switch ((TableViewEvent)eventId) {
 
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                                case TableViewEvent.SelectionChanged:
 
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                                        selChangeObserver = NSNotificationCenter.DefaultCenter.AddObserver (new NSString (SelectionChangeEventName), HandleTreeSelectionDidChange, Table);
 
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                                        break;
 
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                                }
 
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                        }
 
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                }
 
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                public override void DisableEvent (object eventId)
 
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                {
 
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                        base.DisableEvent (eventId);
 
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                        if (eventId is TableViewEvent) {
 
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                                switch ((TableViewEvent)eventId) {
 
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                                case TableViewEvent.SelectionChanged:
 
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                                        if (selChangeObserver != null)
 
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                                                NSNotificationCenter.DefaultCenter.RemoveObserver (selChangeObserver);
 
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                                        break;
 
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                                }
 
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                        }
 
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                }
 
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                void HandleTreeSelectionDidChange (NSNotification notif)
 
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                {
 
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                        Toolkit.Invoke (delegate {
 
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                                EventSink.OnSelectionChanged ();
 
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                        });
 
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                }
 
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                public void SetSelectionMode (SelectionMode mode)
 
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                {
 
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                        Table.AllowsMultipleSelection = mode == SelectionMode.Multiple;
 
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                }
 
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                public virtual object AddColumn (ListViewColumn col)
 
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                {
 
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                        var tcol = new NSTableColumn ();
 
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                        cols.Add (tcol);
 
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                        var c = CellUtil.CreateCell (this, col.Views);
 
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                        tcol.DataCell = c;
 
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                        Table.AddColumn (tcol);
 
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                        var hc = new NSTableHeaderCell ();
 
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                        hc.Title = col.Title;
 
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                        tcol.HeaderCell = hc;
 
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                        return tcol;
 
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                }
 
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                public void RemoveColumn (ListViewColumn col, object handle)
 
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                {
 
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                        Table.RemoveColumn ((NSTableColumn)handle);
 
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                }
 
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                public void UpdateColumn (ListViewColumn col, object handle, ListViewColumnChange change)
 
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                {
 
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                        NSTableColumn tcol = (NSTableColumn) handle;
 
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                        tcol.DataCell = CellUtil.CreateCell (this, col.Views);
 
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                }
 
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                public void SelectAll ()
 
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                {
 
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                        Table.SelectAll (null);
 
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                }
 
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                public void UnselectAll ()
 
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                {
 
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                        Table.DeselectAll (null);
 
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                }
 
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                public abstract object GetValue (object pos, int nField);
 
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                float ICellSource.RowHeight {
 
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                        get { return Table.RowHeight; }
 
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                        set { Table.RowHeight = value; }
 
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                }
 
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                public bool BorderVisible {
 
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                        get { return scroll.BorderType == NSBorderType.BezelBorder;}
 
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                        set {
 
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                                scroll.BorderType = value ? NSBorderType.BezelBorder : NSBorderType.NoBorder;
 
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                        }
 
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                }
 
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                public bool HeadersVisible {
 
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                        get {
 
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                                return Table.HeaderView != null;
 
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                        }
 
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                        set {
 
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                                if (value) {
 
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                                        if (Table.HeaderView == null)
 
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                                                Table.HeaderView = new NSTableHeaderView ();
 
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                                } else {
 
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                                        Table.HeaderView = null;
 
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                                }
 
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                        }
 
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                }
 
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        }
 
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        class ScrollView: NSScrollView, IViewObject
 
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        {
 
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                public Widget Frontend { get; set; }
 
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                public NSView View {
 
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                        get { return this; }
 
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                }
 
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        }
 
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}
 
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