Mercurial > servermonitor

comparison ServerMonitor/Controls/CheckControl.cs @ 9:7127d5b5ac75

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Code cleanup and comments
author Brad Greco <brad@bgreco.net>
date Mon, 08 Apr 2019 21:29:54 -0400
parents 3142e52cbe69
children
comparison
equal deleted inserted replaced
8:052aa62cb42a 9:7127d5b5ac75
1 using System; 1 using System;
2 using System.Collections.Generic; 2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Drawing;
5 using System.Data; 3 using System.Data;
6 using System.Linq; 4 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms; 5 using System.Windows.Forms;
9 6
10 namespace ServerMonitorApp 7 namespace ServerMonitorApp
11 { 8 {
12 /// <summary>Base class for check controls</summary> 9 /// <summary>Base class for check controls.</summary>
13 /// <remarks>This control should never be used directly, but marking it abstract causes problems with the designer.</remarks> 10 /// <remarks>This control should never be used directly, but marking it abstract causes problems with the designer.</remarks>
14 public partial class CheckControl : UserControl 11 public partial class CheckControl : UserControl
15 { 12 {
13 /// <summary>Type of the check this control can edit.</summary>
16 public Type CheckType => GetCheckType(GetType()); 14 public Type CheckType => GetCheckType(GetType());
17 15
18 public CheckControl() 16 public CheckControl()
19 { 17 {
20 InitializeComponent(); 18 InitializeComponent();
22 20
23 private void CheckControl_Load(object sender, EventArgs e) 21 private void CheckControl_Load(object sender, EventArgs e)
24 { 22 {
25 CheckGroupBox.Text = Helpers.GetDisplayName(CheckType); 23 CheckGroupBox.Text = Helpers.GetDisplayName(CheckType);
26 24
25 // Bind change listeners to checkboxes to enable or disable a panel of controls.
26 // The leftmost checkbox is assumed to be the "master switch" for the panel.
27 IEnumerable<Panel> panels = CheckGroupBox.Controls.OfType<Panel>(); 27 IEnumerable<Panel> panels = CheckGroupBox.Controls.OfType<Panel>();
28 foreach (Panel panel in panels) 28 foreach (Panel panel in panels)
29 { 29 {
30 CheckBox mainCheckBox = panel.Controls.OfType<CheckBox>().OrderBy(c => c.Left).FirstOrDefault(); 30 CheckBox mainCheckBox = panel.Controls.OfType<CheckBox>().OrderBy(c => c.Left).FirstOrDefault();
31 if (mainCheckBox != null) 31 if (mainCheckBox != null)
39 private void CheckControl_CheckedChanged(object sender, EventArgs e) 39 private void CheckControl_CheckedChanged(object sender, EventArgs e)
40 { 40 {
41 DisablePanelByCheckBox((CheckBox)sender); 41 DisablePanelByCheckBox((CheckBox)sender);
42 } 42 }
43 43
44 /// <summary>Enables or disables all sibling controls of a checkbox.</summary>
45 /// <param name="checkBox">The checkbox to disable or enable the sibling controls of.</param>
44 private void DisablePanelByCheckBox(CheckBox checkBox) 46 private void DisablePanelByCheckBox(CheckBox checkBox)
45 { 47 {
46 foreach (Control control in checkBox.Parent.Controls) 48 foreach (Control control in checkBox.Parent.Controls)
47 { 49 {
48 if (control != checkBox) 50 if (control != checkBox)
49 control.Enabled = checkBox.Checked; 51 control.Enabled = checkBox.Checked;
50 } 52 }
51 } 53 }
52 54
55 /// <summary>Sets the values of the controls from a check's properties.</summary>
56 /// <remarks>Subclasses should implement this method. Marking as abstract causes problems with the designer.</remarks>
53 public virtual void LoadCheck(Check check) { } 57 public virtual void LoadCheck(Check check) { }
54 58
59 /// <summary>Updates the properties of a check from user input.</summary>
60 /// <remarks>Subclasses should implement this method. Marking as abstract causes problems with the designer.</remarks>
55 public virtual void UpdateCheck(Check check) { } 61 public virtual void UpdateCheck(Check check) { }
56 62
63 /// <summary>Creates an instance of a check control based on a check type.</summary>
57 public static CheckControl Create(Type CheckType) 64 public static CheckControl Create(Type CheckType)
58 { 65 {
66 // Use reflection to find a check control that declares it handles the given type.
59 Type checkControlType = typeof(CheckControl).Assembly.GetTypes().FirstOrDefault(t => GetCheckType(t) == CheckType); 67 Type checkControlType = typeof(CheckControl).Assembly.GetTypes().FirstOrDefault(t => GetCheckType(t) == CheckType);
68 // If one was found, instantiate it.
60 return checkControlType == null ? null : (CheckControl)Activator.CreateInstance(checkControlType); 69 return checkControlType == null ? null : (CheckControl)Activator.CreateInstance(checkControlType);
61 } 70 }
62 71
72 /// <summary>Gets the value of the CheckTypeAttribute for a type.</summary>
63 private static Type GetCheckType(Type type) 73 private static Type GetCheckType(Type type)
64 { 74 {
65 return type.GetAttribute<CheckTypeAttribute>()?.CheckType; 75 return type.GetAttribute<CheckTypeAttribute>()?.CheckType;
66 } 76 }
67 } 77 }