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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| // Copyright © 2011-2013 Yanick Castonguay | ||
| // | ||
| // This file is part of MPfm. | ||
| // | ||
| // MPfm is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // MPfm is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with MPfm. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| using System; | ||
| using Android.Content; | ||
| using Android.Graphics; | ||
| using Android.Runtime; | ||
| using Android.Util; | ||
| using Android.Views; | ||
| using Android.Widget; | ||
|
|
||
| namespace org.sessionsapp.android | ||
| { | ||
| /// <summary> | ||
| /// This custom list view is based on the Android list view but adds a few things such as the IsScrollable property and the ability to change row order | ||
| /// (because Google is clearly too lazy to do anything like that). | ||
| /// </summary> | ||
| public class CustomListView : ListView | ||
| { | ||
| public bool CanItemsBeMoved { get; set; } | ||
| public bool IsScrollable { get; set; } | ||
| public bool IsMovingItem { get; private set; } | ||
|
|
||
| protected CustomListView(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer) | ||
| { | ||
| Initialize(); | ||
| } | ||
|
|
||
| public CustomListView(Context context) : base(context) | ||
| { | ||
| Initialize(); | ||
| } | ||
|
|
||
| public CustomListView(Context context, IAttributeSet attrs) : base(context, attrs) | ||
| { | ||
| Initialize(); | ||
| } | ||
|
|
||
| public CustomListView(Context context, IAttributeSet attrs, int defStyle) : base(context, attrs, defStyle) | ||
| { | ||
| Initialize(); | ||
| } | ||
|
|
||
| private void Initialize() | ||
| { | ||
| IsScrollable = true; | ||
| CanItemsBeMoved = true; | ||
| IsMovingItem = false; | ||
| } | ||
|
|
||
| public override bool DispatchTouchEvent(MotionEvent e) | ||
| { | ||
| //Console.WriteLine("CustomListView - DispatchTouchEvent - action: {0} buttonState: {1} downTime: {2} eventTime: {3} x,y: ({4},{5}) width: {6} density: {7} canItemsBeMoved: {8} isMovingItem: {9} isScrollable: {10}", e.Action, e.ButtonState, e.DownTime, e.EventTime, e.GetX(), e.GetY(), Width, Resources.DisplayMetrics.Density, CanItemsBeMoved, IsMovingItem, IsScrollable); | ||
| Console.WriteLine("CustomListView - DispatchTouchEvent - action: {0} x,y: ({1},{2})", e.Action, e.GetX(), e.GetY()); | ||
|
|
||
| float density = Resources.DisplayMetrics.Density; | ||
| float x = e.GetX(); | ||
| float y = e.GetY(); | ||
|
|
||
| if (CanItemsBeMoved && !IsMovingItem && x >= Width - 48 * density) | ||
| { | ||
| // The user is trying to move an item using the right hand 'button'. | ||
| Console.WriteLine("CustomListView - DispatchTouchEvent - Starting to move item..."); | ||
| View viewItemMove = GetChildAtPosition(x, y); | ||
| if (viewItemMove != null) | ||
| { | ||
| IsMovingItem = true; | ||
| IsScrollable = false; | ||
| int tag = -1; | ||
| if (viewItemMove.Tag != null) | ||
| tag = (int)viewItemMove.Tag; | ||
|
|
||
| Console.WriteLine("CustomListView - DispatchTouchEvent - Found moving item! tag: {0}", tag); | ||
| } | ||
| else | ||
| { | ||
| Console.WriteLine("CustomListView - DispatchTouchEvent - Did NOT find moving item :-("); | ||
| } | ||
| } | ||
|
|
||
| // Keep cancel on top because the flag can contain both move and cancel. | ||
| // if (e.Action.HasFlag(MotionEventActions.Cancel)) // This was cancel when using OnTouchListener on a child view | ||
| if(e.Action.HasFlag(MotionEventActions.Up)) | ||
| { | ||
| //Console.WriteLine("CustomListView - DispatchTouchEvent - Up - (x,y): ({0},{1})", x, y); | ||
| Console.WriteLine("CustomListView - DispatchTouchEvent - CANCELLING MOVE..."); | ||
| IsMovingItem = false; | ||
| IsScrollable = true; | ||
| } | ||
| else if (e.Action.HasFlag(MotionEventActions.Move)) | ||
| { | ||
| // Block scroll | ||
| if(!IsScrollable) | ||
| return true; | ||
| } | ||
|
|
||
| // Try to find the item over the finger | ||
| View view = GetChildAtPosition(x, y); | ||
| if (view != null) | ||
| { | ||
| int tag = -1; | ||
| if (view.Tag != null) | ||
| tag = (int)view.Tag; | ||
|
|
||
| Console.WriteLine("CustomListView - DispatchTouchEvent - Found finger over view! tag: {0}", tag); | ||
| } | ||
| else | ||
| { | ||
| Console.WriteLine("CustomListView - DispatchTouchEvent - Did NOT find finger over view :-("); | ||
| } | ||
|
|
||
| return base.DispatchTouchEvent(e); | ||
| } | ||
|
|
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| private View GetChildAtPosition(float x, float y) | ||
| { | ||
| View returnView = null; | ||
| int lastIndex = LastVisiblePosition - FirstVisiblePosition; | ||
| for (int a = 0; a < lastIndex; a++) | ||
| { | ||
| View view = GetChildAt(a); | ||
| if (view != null) | ||
| { | ||
| Rect rect = new Rect(); | ||
| view.GetHitRect(rect); | ||
| bool isOverItem = y >= rect.Top && y <= rect.Bottom; | ||
| //Console.WriteLine("CustomListView - GetChildAtPosition - Finding rects - position: {0} hitRect(x,y): ({1},{2})", a, rect.Left, rect.Top); | ||
| if (isOverItem) | ||
| { | ||
| Console.WriteLine("CustomListView - GetChildAtPosition - FOUND CHILD - position: {0} hitRect(x,y): ({1},{2})", a, rect.Left, rect.Top); | ||
| returnView = view; | ||
| break; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return returnView; | ||
| } | ||
| } | ||
| } |
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