mirror of https://github.com/dahall/Vanara.git
295 lines
9.5 KiB
C#
295 lines
9.5 KiB
C#
//Copyright (c) Microsoft Corporation. All rights reserved.
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using System;
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using System.Diagnostics;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading;
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using System.Windows.Forms;
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using Vanara.PInvoke;
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using Vanara.Windows.Forms;
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using Vanara.Windows.Shell;
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namespace Microsoft.WindowsAPICodePack.Samples
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{
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public partial class ExplorerBrowserTestForm : Form
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{
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private readonly AutoResetEvent itemsChanged = new AutoResetEvent(false);
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private readonly AutoResetEvent selectionChanged = new AutoResetEvent(false);
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private readonly System.Windows.Forms.Timer uiDecoupleTimer = new System.Windows.Forms.Timer();
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public ExplorerBrowserTestForm()
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{
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InitializeComponent();
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// initialize known folder combo box
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knownFolderCombo.Sorted = true;
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knownFolderCombo.Items.AddRange(KFItem.All);
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// initial property grids
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propertyGrid.SelectedObject = explorerBrowser;
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// setup ExplorerBrowser navigation events
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explorerBrowser.Navigating += new EventHandler<Vanara.Windows.Forms.ExplorerBrowser.NavigatingEventArgs>(explorerBrowser_Navigating);
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explorerBrowser.NavigationFailed += new EventHandler<Vanara.Windows.Forms.ExplorerBrowser.NavigationFailedEventArgs>(explorerBrowser_NavigationFailed);
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explorerBrowser.Navigated += new EventHandler<Vanara.Windows.Forms.ExplorerBrowser.NavigatedEventArgs>(explorerBrowser_Navigated);
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explorerBrowser.ItemsChanged += new EventHandler(explorerBrowser_ItemsChanged);
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explorerBrowser.SelectionChanged += new EventHandler(explorerBrowser_SelectionChanged);
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explorerBrowser.ItemsEnumerated += new EventHandler(explorerBrowser_ItemsEnumerated);
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explorerBrowser.Navigate(ShellFolder.Desktop);
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// set up Navigation log event and button state
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explorerBrowser.History.NavigationLogChanged += new EventHandler<Vanara.Windows.Forms.ExplorerBrowser.NavigationLogEventArgs>(NavigationLog_NavigationLogChanged);
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backButton.Enabled = false;
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forwardButton.Enabled = false;
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uiDecoupleTimer.Tick += new EventHandler(uiDecoupleTimer_Tick);
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uiDecoupleTimer.Interval = 100;
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uiDecoupleTimer.Start();
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}
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private void DebugEnterFunc([System.Runtime.CompilerServices.CallerMemberName] string func = "") => System.Diagnostics.Debug.WriteLine($"Entering {func}...");
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private void backButton_Click(object sender, EventArgs e) =>
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// Move backwards through navigation log
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explorerBrowser.NavigateFromHistory(NavigationLogDirection.Backward);
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private void clearHistoryButton_Click(object sender, EventArgs e) =>
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// clear navigation log
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explorerBrowser.History.Clear();
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private void explorerBrowser_ItemsChanged(object sender, EventArgs e)
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{
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DebugEnterFunc();
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itemsChanged.Set();
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}
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private void explorerBrowser_ItemsEnumerated(object sender, EventArgs e)
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{
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DebugEnterFunc();
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// This event is BeginInvoked to decouple the ExplorerBrowser UI from this UI
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BeginInvoke(new MethodInvoker(delegate ()
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{
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eventHistoryTextBox.Text =
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eventHistoryTextBox.Text +
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"View enumeration complete.\n";
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}));
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selectionChanged.Set();
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itemsChanged.Set();
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}
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private void explorerBrowser_Navigated(object sender, Vanara.Windows.Forms.ExplorerBrowser.NavigatedEventArgs args)
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{
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DebugEnterFunc();
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// This event is BeginInvoked to decouple the ExplorerBrowser UI from this UI
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BeginInvoke(new MethodInvoker(delegate ()
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{
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// update event history text box
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var location = (args.NewLocation == null) ? "(unknown)" : args.NewLocation.Name;
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eventHistoryTextBox.Text =
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eventHistoryTextBox.Text +
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"Navigation completed. New Location = " + location + "\n";
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}));
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}
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private void explorerBrowser_Navigating(object sender, Vanara.Windows.Forms.ExplorerBrowser.NavigatingEventArgs args)
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{
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DebugEnterFunc();
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// fail navigation if check selected (this must be synchronous)
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args.Cancel = failNavigationCheckBox.Checked;
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// This portion is BeginInvoked to decouple the ExplorerBrowser UI from this UI
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BeginInvoke(new MethodInvoker(delegate ()
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{
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// update event history text box
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var message = "";
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var location = (args.PendingLocation == null) ? "(unknown)" : args.PendingLocation.Name;
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if (args.Cancel)
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{
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message = "Navigation Failing. Pending Location = " + location;
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}
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else
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{
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message = "Navigation Pending. Pending Location = " + location;
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}
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eventHistoryTextBox.Text =
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eventHistoryTextBox.Text + message + "\n";
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}));
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}
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private void explorerBrowser_NavigationFailed(object sender, Vanara.Windows.Forms.ExplorerBrowser.NavigationFailedEventArgs args)
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{
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DebugEnterFunc();
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// This event is BeginInvoked to decouple the ExplorerBrowser UI from this UI
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BeginInvoke(new MethodInvoker(delegate ()
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{
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// update event history text box
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var location = (args.FailedLocation == null) ? "(unknown)" : args.FailedLocation.Name;
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eventHistoryTextBox.Text =
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eventHistoryTextBox.Text +
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"Navigation failed. Failed Location = " + location + "\n";
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if (explorerBrowser.History.CurrentLocationIndex == -1)
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navigationHistoryCombo.Text = "";
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else
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navigationHistoryCombo.SelectedIndex = explorerBrowser.History.CurrentLocationIndex;
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}));
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}
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private void explorerBrowser_SelectionChanged(object sender, EventArgs e)
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{
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DebugEnterFunc();
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selectionChanged.Set();
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}
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private void filePathEdit_TextChanged(object sender, EventArgs e) => filePathNavigate.Enabled = (filePathEdit.Text.Length > 0);
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private void filePathNavigate_Click(object sender, EventArgs e)
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{
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DebugEnterFunc();
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try
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{
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// Navigates to a specified file (must be a container file to work, i.e., ZIP, CAB)
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explorerBrowser.Navigate(new ShellFolder(filePathEdit.Text));
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}
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catch (COMException)
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{
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MessageBox.Show("Navigation not possible.");
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}
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}
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private void forwardButton_Click(object sender, EventArgs e)
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{
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DebugEnterFunc();
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explorerBrowser.NavigateFromHistory(NavigationLogDirection.Forward);
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}
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private void knownFolderCombo_SelectedIndexChanged(object sender, EventArgs e) => knownFolderNavigate.Enabled = (knownFolderCombo.Text.Length > 0);
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private void knownFolderNavigate_Click(object sender, EventArgs e)
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{
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try
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{
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// Navigate to a known folder
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explorerBrowser.Navigate(ShellItem.Open(((KFItem)knownFolderCombo.SelectedItem).ShellItem));
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}
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catch (COMException)
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{
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MessageBox.Show("Navigation not possible.");
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}
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}
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private void navigateButton_Click(object sender, EventArgs e)
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{
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DebugEnterFunc();
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try
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{
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// navigate to specific folder
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explorerBrowser.Navigate(new ShellFolder(pathEdit.Text));
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}
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catch (COMException)
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{
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MessageBox.Show("Navigation not possible.");
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}
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}
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private void navigationHistoryCombo_SelectedIndexChanged(object sender, EventArgs e) =>
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// navigating to specific index in navigation log
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explorerBrowser.NavigateToHistoryIndex(navigationHistoryCombo.SelectedIndex);
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private void NavigationLog_NavigationLogChanged(object sender, Vanara.Windows.Forms.ExplorerBrowser.NavigationLogEventArgs args)
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{
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DebugEnterFunc();
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// This event is BeginInvoked to decouple the ExplorerBrowser UI from this UI
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BeginInvoke(new MethodInvoker(delegate ()
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{
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// calculate button states
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if (args.CanNavigateBackwardChanged)
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{
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backButton.Enabled = explorerBrowser.History.CanNavigateBackward;
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}
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if (args.CanNavigateForwardChanged)
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{
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forwardButton.Enabled = explorerBrowser.History.CanNavigateForward;
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}
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// update history combo box
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if (args.LocationsChanged)
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{
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navigationHistoryCombo.Items.Clear();
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foreach (var shobj in explorerBrowser.History.Locations)
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{
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navigationHistoryCombo.Items.Add(shobj.Name);
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}
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}
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if (explorerBrowser.History.CurrentLocationIndex == -1)
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navigationHistoryCombo.Text = "";
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else
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navigationHistoryCombo.SelectedIndex = explorerBrowser.History.CurrentLocationIndex;
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}));
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}
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private void pathEdit_TextChanged(object sender, EventArgs e) => navigateButton.Enabled = (pathEdit.Text.Length > 0);
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private void uiDecoupleTimer_Tick(object sender, EventArgs e)
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{
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DebugEnterFunc();
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try
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{
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if (selectionChanged.WaitOne(1))
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{
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var itemsText = new StringBuilder();
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foreach (var item in explorerBrowser.SelectedItems)
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{
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if (item != null)
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itemsText.AppendLine("\tItem = " + item.Name);
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}
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selectedItemsTextBox.Text = itemsText.ToString();
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itemsTabControl.TabPages[1].Text = "Selected Items (Count=" + explorerBrowser.SelectedItems.Count.ToString() + ")";
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}
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if (itemsChanged.WaitOne(1))
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{
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// update items text box
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var itemsText = new StringBuilder();
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foreach (var item in explorerBrowser.Items)
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{
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if (item != null)
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itemsText.AppendLine("\tItem = " + item.Name);
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}
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itemsTextBox.Text = itemsText.ToString();
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itemsTabControl.TabPages[0].Text = "Items (Count=" + explorerBrowser.Items.Count.ToString() + ")";
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}
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}
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catch (Exception ex)
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{
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Debug.WriteLine(ex.Message);
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}
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}
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private class KFItem
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{
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private static readonly Shell32.IKnownFolderManager kfm = new Shell32.IKnownFolderManager();
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public KFItem(Guid id)
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{
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Id = id; Text = kfm.GetFolder(id).Name();
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}
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public static KFItem[] All => kfm.GetFolderIds().Select(g => new KFItem(g)).ToArray();
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public Guid Id { get; set; }
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public Shell32.IShellItem ShellItem => kfm.GetFolder(Id).GetShellItem<Shell32.IShellItem>();
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public string Text { get; set; }
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public override string ToString() => Text;
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}
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}
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} |