Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / WinForms / Managed / System / WinForms / MdiWindowListStrip.cs / 1 / MdiWindowListStrip.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Windows.Forms {
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Security;
using System.Globalization;
/// this is the menu that merges into the MdiWindowListItem
/// in an MDI parent when an MDI child is maximized.
///
internal class MdiWindowListStrip : MenuStrip {
private Form mdiParent = null;
private ToolStripMenuItem mergeItem;
private MenuStrip mergedMenu;
public MdiWindowListStrip() {
}
protected override void Dispose(bool disposing) {
if (disposing) {
mdiParent = null;
}
base.Dispose(disposing);
}
internal ToolStripMenuItem MergeItem {
get {
if (mergeItem == null) {
mergeItem = new ToolStripMenuItem();
mergeItem.MergeAction = MergeAction.MatchOnly;
}
if (mergeItem.Owner == null) {
this.Items.Add(mergeItem);
}
return mergeItem;
}
}
internal MenuStrip MergedMenu {
get {
return mergedMenu;
}
set {
mergedMenu = value;
}
}
/// Given a form, the items on this toolstrip populate with the mdi children
/// with mnemonics 1-9 and More Windows menu item.
/// These items can then be merged into a menustrip.
///
/// Based on similar code in MenuItem.cs::PopulateMdiList(), which is unfortunately just different
/// enough in its working environment that we can't readily combine the two.
/// But if you're fixing something here, chances are that the same issue will need scrutiny over there.
///
public void PopulateItems(Form mdiParent, ToolStripMenuItem mdiMergeItem, bool includeSeparator) {
this.mdiParent = mdiParent;
this.SuspendLayout();
MergeItem.DropDown.SuspendLayout();
try {
ToolStripMenuItem mergeItem = MergeItem;
mergeItem.DropDownItems.Clear();
mergeItem.Text = mdiMergeItem.Text;
Form[] forms = mdiParent.MdiChildren;
if(forms != null && forms.Length != 0){
if(includeSeparator) {
ToolStripSeparator separator = new ToolStripSeparator();
separator.MergeAction = MergeAction.Append;
separator.MergeIndex = -1;
mergeItem.DropDownItems.Add(separator);
}
Form activeMdiChild = mdiParent.ActiveMdiChild;
const int maxMenuForms = 9; // max number of Window menu items for forms
int visibleChildren = 0; // number of visible child forms (so we know if we need to show More Windows...
int accel = 1; // prefix the form name with this digit, underlined, as an accelerator
int formsAddedToMenu = 0;
bool activeFormAdded = false;
for (int i = 0; i < forms.Length; i++) {
// we need to check close reason here because we could be getting called
// here in the midst of a WM_CLOSE - WM_MDIDESTROY eventually fires a WM_MDIACTIVATE
if (forms[i].Visible && (forms[i].CloseReason == CloseReason.None)) {
visibleChildren++;
if ((activeFormAdded && (formsAddedToMenu < maxMenuForms)) || // don't exceed max
(!activeFormAdded && (formsAddedToMenu < (maxMenuForms-1)) || // save room for active if it's not in yet
(forms[i].Equals(activeMdiChild)))){ // there's always room for activeMdiChild
string text = WindowsFormsUtils.EscapeTextWithAmpersands(mdiParent.MdiChildren[i].Text);
text = (text == null) ? String.Empty : text;
ToolStripMenuItem windowListItem = new ToolStripMenuItem(mdiParent.MdiChildren[i]);
windowListItem.Text = String.Format(CultureInfo.CurrentCulture, "&{0} {1}", accel, text);
windowListItem.MergeAction = MergeAction.Append;
windowListItem.MergeIndex = accel;
windowListItem.Click += new EventHandler(OnWindowListItemClick);
if (forms[i].Equals(activeMdiChild)) { // if this the active one, check it off.
windowListItem.Checked = true;
activeFormAdded = true;
}
accel++;
formsAddedToMenu++;
Debug.WriteLineIf(ToolStrip.MDIMergeDebug.TraceVerbose,"\tPopulateItems: Added " + windowListItem.Text);
mergeItem.DropDownItems.Add(windowListItem);
}
}
}
// show the More Windows... item if necessary.
if (visibleChildren > maxMenuForms) {
ToolStripMenuItem moreWindowsMenuItem = new ToolStripMenuItem();
moreWindowsMenuItem.Text = SR.GetString(SR.MDIMenuMoreWindows);
Debug.WriteLineIf(ToolStrip.MDIMergeDebug.TraceVerbose, "\tPopulateItems: Added " + moreWindowsMenuItem.Text);
moreWindowsMenuItem.Click += new EventHandler(OnMoreWindowsMenuItemClick);
moreWindowsMenuItem.MergeAction = MergeAction.Append;
mergeItem.DropDownItems.Add(moreWindowsMenuItem);
}
}
}
finally {
// this is an invisible toolstrip dont even bother doing layout.
this.ResumeLayout(false);
MergeItem.DropDown.ResumeLayout(false);
}
}
/// handler for More Windows... This is similar to MenuItem.cs
private void OnMoreWindowsMenuItemClick(object sender, EventArgs e) {
Form[] forms = mdiParent.MdiChildren;
if (forms != null) {
// SECREVIEW : "System" style dialog, no user code will execute, and
// : we don't want the restricted dialog options...
//
IntSecurity.AllWindows.Assert();
try {
using (MdiWindowDialog dialog = new MdiWindowDialog()) {
dialog.SetItems(mdiParent.ActiveMdiChild, forms);
DialogResult result = dialog.ShowDialog();
if (result == DialogResult.OK) {
// AllWindows Assert above allows this...
//
dialog.ActiveChildForm.Activate();
if (dialog.ActiveChildForm.ActiveControl != null && !dialog.ActiveChildForm.ActiveControl.Focused) {
dialog.ActiveChildForm.ActiveControl.Focus();
}
}
}
}
finally {
CodeAccessPermission.RevertAssert();
}
}
}
/// handler for 1 - 9. This is similar to MenuItem.cs
private void OnWindowListItemClick(object sender, EventArgs e) {
ToolStripMenuItem windowListItem = sender as ToolStripMenuItem;
if (windowListItem != null) {
Form boundForm = windowListItem.MdiForm;
if (boundForm != null) {
// SECREVIEW : User selected a window, that means it is OK
// : to move focus
//
IntSecurity.ModifyFocus.Assert();
try {
boundForm.Activate();
if (boundForm.ActiveControl != null && !boundForm.ActiveControl.Focused) {
boundForm.ActiveControl.Focus();
}
}
finally {
CodeAccessPermission.RevertAssert();
}
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Windows.Forms {
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Security;
using System.Globalization;
/// this is the menu that merges into the MdiWindowListItem
/// in an MDI parent when an MDI child is maximized.
///
internal class MdiWindowListStrip : MenuStrip {
private Form mdiParent = null;
private ToolStripMenuItem mergeItem;
private MenuStrip mergedMenu;
public MdiWindowListStrip() {
}
protected override void Dispose(bool disposing) {
if (disposing) {
mdiParent = null;
}
base.Dispose(disposing);
}
internal ToolStripMenuItem MergeItem {
get {
if (mergeItem == null) {
mergeItem = new ToolStripMenuItem();
mergeItem.MergeAction = MergeAction.MatchOnly;
}
if (mergeItem.Owner == null) {
this.Items.Add(mergeItem);
}
return mergeItem;
}
}
internal MenuStrip MergedMenu {
get {
return mergedMenu;
}
set {
mergedMenu = value;
}
}
/// Given a form, the items on this toolstrip populate with the mdi children
/// with mnemonics 1-9 and More Windows menu item.
/// These items can then be merged into a menustrip.
///
/// Based on similar code in MenuItem.cs::PopulateMdiList(), which is unfortunately just different
/// enough in its working environment that we can't readily combine the two.
/// But if you're fixing something here, chances are that the same issue will need scrutiny over there.
///
public void PopulateItems(Form mdiParent, ToolStripMenuItem mdiMergeItem, bool includeSeparator) {
this.mdiParent = mdiParent;
this.SuspendLayout();
MergeItem.DropDown.SuspendLayout();
try {
ToolStripMenuItem mergeItem = MergeItem;
mergeItem.DropDownItems.Clear();
mergeItem.Text = mdiMergeItem.Text;
Form[] forms = mdiParent.MdiChildren;
if(forms != null && forms.Length != 0){
if(includeSeparator) {
ToolStripSeparator separator = new ToolStripSeparator();
separator.MergeAction = MergeAction.Append;
separator.MergeIndex = -1;
mergeItem.DropDownItems.Add(separator);
}
Form activeMdiChild = mdiParent.ActiveMdiChild;
const int maxMenuForms = 9; // max number of Window menu items for forms
int visibleChildren = 0; // number of visible child forms (so we know if we need to show More Windows...
int accel = 1; // prefix the form name with this digit, underlined, as an accelerator
int formsAddedToMenu = 0;
bool activeFormAdded = false;
for (int i = 0; i < forms.Length; i++) {
// we need to check close reason here because we could be getting called
// here in the midst of a WM_CLOSE - WM_MDIDESTROY eventually fires a WM_MDIACTIVATE
if (forms[i].Visible && (forms[i].CloseReason == CloseReason.None)) {
visibleChildren++;
if ((activeFormAdded && (formsAddedToMenu < maxMenuForms)) || // don't exceed max
(!activeFormAdded && (formsAddedToMenu < (maxMenuForms-1)) || // save room for active if it's not in yet
(forms[i].Equals(activeMdiChild)))){ // there's always room for activeMdiChild
string text = WindowsFormsUtils.EscapeTextWithAmpersands(mdiParent.MdiChildren[i].Text);
text = (text == null) ? String.Empty : text;
ToolStripMenuItem windowListItem = new ToolStripMenuItem(mdiParent.MdiChildren[i]);
windowListItem.Text = String.Format(CultureInfo.CurrentCulture, "&{0} {1}", accel, text);
windowListItem.MergeAction = MergeAction.Append;
windowListItem.MergeIndex = accel;
windowListItem.Click += new EventHandler(OnWindowListItemClick);
if (forms[i].Equals(activeMdiChild)) { // if this the active one, check it off.
windowListItem.Checked = true;
activeFormAdded = true;
}
accel++;
formsAddedToMenu++;
Debug.WriteLineIf(ToolStrip.MDIMergeDebug.TraceVerbose,"\tPopulateItems: Added " + windowListItem.Text);
mergeItem.DropDownItems.Add(windowListItem);
}
}
}
// show the More Windows... item if necessary.
if (visibleChildren > maxMenuForms) {
ToolStripMenuItem moreWindowsMenuItem = new ToolStripMenuItem();
moreWindowsMenuItem.Text = SR.GetString(SR.MDIMenuMoreWindows);
Debug.WriteLineIf(ToolStrip.MDIMergeDebug.TraceVerbose, "\tPopulateItems: Added " + moreWindowsMenuItem.Text);
moreWindowsMenuItem.Click += new EventHandler(OnMoreWindowsMenuItemClick);
moreWindowsMenuItem.MergeAction = MergeAction.Append;
mergeItem.DropDownItems.Add(moreWindowsMenuItem);
}
}
}
finally {
// this is an invisible toolstrip dont even bother doing layout.
this.ResumeLayout(false);
MergeItem.DropDown.ResumeLayout(false);
}
}
/// handler for More Windows... This is similar to MenuItem.cs
private void OnMoreWindowsMenuItemClick(object sender, EventArgs e) {
Form[] forms = mdiParent.MdiChildren;
if (forms != null) {
// SECREVIEW : "System" style dialog, no user code will execute, and
// : we don't want the restricted dialog options...
//
IntSecurity.AllWindows.Assert();
try {
using (MdiWindowDialog dialog = new MdiWindowDialog()) {
dialog.SetItems(mdiParent.ActiveMdiChild, forms);
DialogResult result = dialog.ShowDialog();
if (result == DialogResult.OK) {
// AllWindows Assert above allows this...
//
dialog.ActiveChildForm.Activate();
if (dialog.ActiveChildForm.ActiveControl != null && !dialog.ActiveChildForm.ActiveControl.Focused) {
dialog.ActiveChildForm.ActiveControl.Focus();
}
}
}
}
finally {
CodeAccessPermission.RevertAssert();
}
}
}
/// handler for 1 - 9. This is similar to MenuItem.cs
private void OnWindowListItemClick(object sender, EventArgs e) {
ToolStripMenuItem windowListItem = sender as ToolStripMenuItem;
if (windowListItem != null) {
Form boundForm = windowListItem.MdiForm;
if (boundForm != null) {
// SECREVIEW : User selected a window, that means it is OK
// : to move focus
//
IntSecurity.ModifyFocus.Assert();
try {
boundForm.Activate();
if (boundForm.ActiveControl != null && !boundForm.ActiveControl.Focused) {
boundForm.ActiveControl.Focus();
}
}
finally {
CodeAccessPermission.RevertAssert();
}
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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