#region License Information
/* HeuristicLab
* Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab 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.
*
* HeuristicLab 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 HeuristicLab. If not, see .
*/
#endregion
using System;
using System.Linq;
using System.Threading;
using System.Windows.Forms;
using HeuristicLab.Collections;
using HeuristicLab.MainForm;
using HeuristicLab.MainForm.WindowsForms;
namespace HeuristicLab.Core.Views {
[View("Movie View")]
public partial class MovieView : ItemView where T : class, IItem {
#region Delay
protected class Delay {
public string Text { get; private set; }
public int Milliseconds { get; private set; }
public Delay(string text, int milliseconds) {
Text = text;
Milliseconds = milliseconds;
}
public override string ToString() {
return Text;
}
}
#endregion
protected int delay;
public new IItemCollection Content {
get { return (IItemCollection)base.Content; }
set { base.Content = value; }
}
public MovieView() {
InitializeComponent();
delayComboBox.Items.Add(new Delay("5s", 5000));
delayComboBox.Items.Add(new Delay("2s", 2000));
delayComboBox.Items.Add(new Delay("1s", 1000));
delayComboBox.Items.Add(new Delay("0.5s", 500));
delayComboBox.Items.Add(new Delay("0.1s", 100));
delayComboBox.Items.Add(new Delay("0.05s", 50));
delayComboBox.Items.Add(new Delay("0.01s", 10));
delayComboBox.SelectedIndex = 4;
delay = 100;
}
protected override void DeregisterContentEvents() {
Content.ItemsAdded -= new CollectionItemsChangedEventHandler(Content_ItemsAdded);
Content.ItemsRemoved -= new CollectionItemsChangedEventHandler(Content_ItemsRemoved);
Content.CollectionReset -= new CollectionItemsChangedEventHandler(Content_CollectionReset);
base.DeregisterContentEvents();
}
protected override void RegisterContentEvents() {
base.RegisterContentEvents();
Content.ItemsAdded += new CollectionItemsChangedEventHandler(Content_ItemsAdded);
Content.ItemsRemoved += new CollectionItemsChangedEventHandler(Content_ItemsRemoved);
Content.CollectionReset += new CollectionItemsChangedEventHandler(Content_CollectionReset);
}
protected override void OnContentChanged() {
base.OnContentChanged();
if (backgroundWorker.IsBusy) backgroundWorker.CancelAsync();
if (Content == null) {
trackBar.Maximum = 10;
viewHost.Content = null;
} else {
Caption += " (" + Content.GetType().Name + ")";
trackBar.Maximum = Content.Count - 1;
viewHost.Content = Content.FirstOrDefault();
}
trackBar.Value = 0;
UpdateLables();
}
protected override void SetEnabledStateOfControls() {
base.SetEnabledStateOfControls();
firstButton.Enabled = (Content != null) && (Content.Count > 0) && (trackBar.Value != trackBar.Minimum) && (!backgroundWorker.IsBusy);
previousButton.Enabled = (Content != null) && (Content.Count > 0) && (trackBar.Value != trackBar.Minimum) && (!backgroundWorker.IsBusy);
trackBar.Enabled = (Content != null) && (Content.Count > 0) && (!backgroundWorker.IsBusy);
nextButton.Enabled = (Content != null) && (Content.Count > 0) && (trackBar.Value != trackBar.Maximum) && (!backgroundWorker.IsBusy);
lastButton.Enabled = (Content != null) && (Content.Count > 0) && (trackBar.Value != trackBar.Maximum) && (!backgroundWorker.IsBusy);
playButton.Enabled = (Content != null) && (Content.Count > 0) && (!backgroundWorker.IsBusy);
stopButton.Enabled = (Content != null) && (backgroundWorker.IsBusy);
delayComboBox.Enabled = (Content != null) && (Content.Count > 0);
}
protected override void OnClosed(FormClosedEventArgs e) {
base.OnClosed(e);
if (backgroundWorker.IsBusy) backgroundWorker.CancelAsync();
}
#region Content Events
protected virtual void Content_ItemsAdded(object sender, CollectionItemsChangedEventArgs e) {
if (InvokeRequired)
Invoke(new CollectionItemsChangedEventHandler(Content_ItemsAdded), sender, e);
else {
trackBar.Maximum = Content.Count - 1;
maximumLabel.Text = trackBar.Maximum.ToString();
if (viewHost.Content == null) viewHost.Content = Content.FirstOrDefault();
SetEnabledStateOfControls();
}
}
protected virtual void Content_ItemsRemoved(object sender, CollectionItemsChangedEventArgs e) {
if (InvokeRequired)
Invoke(new CollectionItemsChangedEventHandler(Content_ItemsRemoved), sender, e);
else {
trackBar.Maximum = Content.Count - 1;
maximumLabel.Text = trackBar.Maximum.ToString();
if (e.Items.Contains((T)viewHost.Content)) {
trackBar.Value = 0;
viewHost.Content = Content.FirstOrDefault();
UpdateLables();
}
SetEnabledStateOfControls();
}
}
protected virtual void Content_CollectionReset(object sender, CollectionItemsChangedEventArgs e) {
if (InvokeRequired)
Invoke(new CollectionItemsChangedEventHandler(Content_CollectionReset), sender, e);
else {
trackBar.Maximum = Content.Count - 1;
trackBar.Value = 0;
viewHost.Content = Content.FirstOrDefault();
UpdateLables();
SetEnabledStateOfControls();
}
}
#endregion
#region Control Events
protected virtual void trackBar_ValueChanged(object sender, EventArgs e) {
viewHost.Content = Content == null ? null : Content.ElementAtOrDefault(trackBar.Value);
indexLabel.Text = trackBar.Value.ToString();
SetEnabledStateOfControls();
}
protected virtual void firstButton_Click(object sender, EventArgs e) {
if (trackBar.Value != trackBar.Minimum) trackBar.Value = trackBar.Minimum;
}
protected virtual void previousButton_Click(object sender, EventArgs e) {
if (trackBar.Value != trackBar.Minimum) trackBar.Value--;
}
protected virtual void nextButton_Click(object sender, EventArgs e) {
if (trackBar.Value != trackBar.Maximum) trackBar.Value++;
}
protected virtual void lastButton_Click(object sender, EventArgs e) {
if (trackBar.Value != trackBar.Maximum) trackBar.Value = trackBar.Maximum;
}
protected virtual void playButton_Click(object sender, EventArgs e) {
firstButton.Enabled = false;
previousButton.Enabled = false;
trackBar.Enabled = false;
nextButton.Enabled = false;
lastButton.Enabled = false;
playButton.Enabled = false;
stopButton.Enabled = true;
backgroundWorker.RunWorkerAsync();
}
protected virtual void stopButton_Click(object sender, EventArgs e) {
stopButton.Enabled = false;
backgroundWorker.CancelAsync();
}
protected virtual void delayComboBox_SelectedIndexChanged(object sender, EventArgs e) {
Delay selected = delayComboBox.SelectedItem as Delay;
if (selected != null) delay = selected.Milliseconds;
}
#endregion
#region BackgroundWorker Events
protected virtual void backgroundWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e) {
bool terminate = false;
while (!backgroundWorker.CancellationPending && !terminate) {
Invoke((Action)delegate() {
if (trackBar.Value < trackBar.Maximum) trackBar.Value++;
terminate = trackBar.Value == trackBar.Maximum;
});
Thread.Sleep(delay);
}
}
protected virtual void backgroundWorker_RunWorkerCompleted(object sender, System.ComponentModel.RunWorkerCompletedEventArgs e) {
firstButton.Enabled = true;
previousButton.Enabled = true;
trackBar.Enabled = true;
nextButton.Enabled = true;
lastButton.Enabled = true;
playButton.Enabled = true;
stopButton.Enabled = false;
}
#endregion
#region Helpers
protected virtual void UpdateLables() {
minimumLabel.Text = trackBar.Minimum.ToString();
indexLabel.Text = trackBar.Value.ToString();
maximumLabel.Text = trackBar.Maximum.ToString();
}
#endregion
}
}