|
/*
*/
namespace System.Windows.Forms.PropertyGridInternal {
using System.Runtime.Serialization.Formatters;
using System.ComponentModel;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System;
using System.Collections;
using System.Reflection;
using System.ComponentModel.Design;
using System.Windows.Forms;
using System.Drawing;
using Microsoft.Win32;
internal class MultiPropertyDescriptorGridEntry : PropertyDescriptorGridEntry {
private MergePropertyDescriptor mergedPd;
private object[] objs;
[
SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors") // GridEntry classes are internal so we have complete
// control over who does what in the constructor.
]
public MultiPropertyDescriptorGridEntry(PropertyGrid ownerGrid, GridEntry peParent, object[] objectArray, PropertyDescriptor[] propInfo, bool hide)
: base (ownerGrid, peParent, hide) {
mergedPd = new MergePropertyDescriptor(propInfo);
this.objs = objectArray;
base.Initialize(mergedPd);
}
public override IContainer Container {
get {
IContainer c = null;
foreach (object o in objs) {
IComponent comp = o as IComponent;
if (comp == null) {
c = null;
break;
}
if (comp.Site != null) {
if (c == null) {
c = comp.Site.Container;
continue;
}
else if (c == comp.Site.Container) {
continue;
}
}
c = null;
break;
}
return c;
}
}
public override bool Expandable {
get {
bool fExpandable = GetFlagSet(FL_EXPANDABLE);
if (fExpandable && ChildCollection.Count > 0) {
return true;
}
if (GetFlagSet(FL_EXPANDABLE_FAILED)) {
return false;
}
try {
foreach (object o in mergedPd.GetValues(objs)) {
if (o == null) {
fExpandable = false;
break;
}
}
}
catch {
fExpandable = false;
}
return fExpandable;
}
}
public override object PropertyValue{
set {
base.PropertyValue = value;
RecreateChildren();
if (Expanded)
GridEntryHost.Refresh(false);
}
}
protected override bool CreateChildren() {
return CreateChildren(false);
}
protected override bool CreateChildren(bool diffOldChildren) {
try {
if (mergedPd.PropertyType.IsValueType || (Flags & GridEntry.FLAG_IMMUTABLE) != 0) {
return base.CreateChildren(diffOldChildren);
}
ChildCollection.Clear();
MultiPropertyDescriptorGridEntry[] mergedProps = MultiSelectRootGridEntry.PropertyMerger.GetMergedProperties(mergedPd.GetValues(objs), this, this.PropertySort, this.CurrentTab);
Debug.WriteLineIf(CompModSwitches.DebugGridView.TraceVerbose && mergedProps == null, "PropertyGridView: MergedProps returned null!");
if (mergedProps != null) {
ChildCollection.AddRange(mergedProps);
}
bool fExpandable = this.Children.Count > 0;
if (!fExpandable) {
SetFlag(GridEntry.FL_EXPANDABLE_FAILED,true);
}
return fExpandable;
}
catch {
return false;
}
}
public override object GetChildValueOwner(GridEntry childEntry) {
if (mergedPd.PropertyType.IsValueType || (Flags & GridEntry.FLAG_IMMUTABLE) != 0) {
return base.GetChildValueOwner(childEntry);
}
return mergedPd.GetValues(objs);
}
public override IComponent[] GetComponents() {
IComponent[] temp = new IComponent[objs.Length];
Array.Copy(objs, 0, temp, 0, objs.Length);
return temp;
}
/// <include file='doc\MultiSelectPropertyGridEntry.uex' path='docs/doc[@for="MultiSelectPropertyGridEntry.GetPropertyTextValue"]/*' />
/// <devdoc>
/// Returns the text value of this property.
/// </devdoc>
public override string GetPropertyTextValue(object value) {
bool allEqual = true;
try{
if (value == null && mergedPd.GetValue(objs, out allEqual) == null) {
if (!allEqual) {
return "";
}
}
}
catch{
return "";
}
return base.GetPropertyTextValue(value);
}
internal override bool NotifyChildValue(GridEntry pe, int type) {
bool success = false;
IDesignerHost host = DesignerHost;
DesignerTransaction trans = null;
if (host != null) {
trans = host.CreateTransaction();
}
try {
success = base.NotifyChildValue(pe, type);
}
finally {
if (trans != null) {
trans.Commit();
}
}
return success;
}
protected override void NotifyParentChange(GridEntry ge) {
// now see if we need to notify the parent(s) up the chain
while (ge != null &&
ge is PropertyDescriptorGridEntry &&
((PropertyDescriptorGridEntry)ge).propertyInfo.Attributes.Contains(NotifyParentPropertyAttribute.Yes)) {
// find the next parent property with a differnet value owner
object owner = ge.GetValueOwner();
// find the next property descriptor with a different parent
while (!(ge is PropertyDescriptorGridEntry) || OwnersEqual(owner, ge.GetValueOwner())) {
ge = ge.ParentGridEntry;
if (ge == null) {
break;
}
}
// fire the change on that owner
if (ge != null) {
owner = ge.GetValueOwner();
IComponentChangeService changeService = ComponentChangeService;
if (changeService != null) {
Array ownerArray = owner as Array;
if (ownerArray != null) {
for (int i = 0; i < ownerArray.Length; i++) {
PropertyDescriptor pd = ((PropertyDescriptorGridEntry)ge).propertyInfo;;
if (pd is MergePropertyDescriptor) {
pd = ((MergePropertyDescriptor)pd)[i];
}
if (pd != null) {
changeService.OnComponentChanging(ownerArray.GetValue(i), pd);
changeService.OnComponentChanged(ownerArray.GetValue(i), pd, null, null);
}
}
}
else {
changeService.OnComponentChanging(owner, ((PropertyDescriptorGridEntry)ge).propertyInfo);
changeService.OnComponentChanged(owner, ((PropertyDescriptorGridEntry)ge).propertyInfo, null, null);
}
}
}
}
}
internal override bool NotifyValueGivenParent(object obj, int type) {
if (obj is ICustomTypeDescriptor) {
obj = ((ICustomTypeDescriptor)obj).GetPropertyOwner(propertyInfo);
}
switch (type) {
case NOTIFY_RESET:
object[] objects = (object[])obj;
if (objects != null && objects.Length > 0) {
IDesignerHost host = DesignerHost;
DesignerTransaction trans = null;
if (host != null) {
trans = host.CreateTransaction(SR.GetString(SR.PropertyGridResetValue, this.PropertyName));
}
try {
bool needChangeNotify = !(objects[0] is IComponent) || ((IComponent)objects[0]).Site == null;
if (needChangeNotify) {
if (!OnComponentChanging()) {
if (trans != null) {
trans.Cancel();
trans = null;
}
return false;
}
}
this.mergedPd.ResetValue(obj);
if (needChangeNotify) {
OnComponentChanged();
}
NotifyParentChange(this);
}
finally {
if (trans != null) {
trans.Commit();
}
}
}
return false;
case NOTIFY_DBL_CLICK:
case NOTIFY_RETURN:
Debug.Assert(propertyInfo is MergePropertyDescriptor, "Did not get a MergePropertyDescriptor!!!");
Debug.Assert(obj is object[], "Did not get an array of objects!!");
MergePropertyDescriptor mpd = propertyInfo as MergePropertyDescriptor;
if (mpd != null) {
object[] objs = (object[])obj;
if (eventBindings == null) {
eventBindings = (IEventBindingService)GetService(typeof(IEventBindingService));
}
if (eventBindings != null) {
EventDescriptor descriptor = eventBindings.GetEvent(mpd[0]);
if (descriptor != null) {
return ViewEvent(obj, null, descriptor, true);
}
}
return false;
}
else {
return base.NotifyValueGivenParent(obj, type);
}
}
return base.NotifyValueGivenParent(obj, type);
}
private bool OwnersEqual(object owner1, object owner2) {
if (!(owner1 is Array)) {
return owner1 == owner2;
}
else {
Array a1 = owner1 as Array;
Array a2 = owner2 as Array;
if (a1 != null && a2 != null && a1.Length == a2.Length) {
for (int i = 0; i < a1.Length; i++) {
if (a1.GetValue(i) != a2.GetValue(i)) {
return false;
}
}
return true;
}
return false;
}
}
public override bool OnComponentChanging() {
if (ComponentChangeService != null) {
int cLength = objs.Length;
for (int i = 0; i < cLength; i++) {
try {
ComponentChangeService.OnComponentChanging(objs[i], mergedPd[i]);
}
catch (CheckoutException co) {
if (co == CheckoutException.Canceled) {
return false;
}
throw co;
}
}
}
return true;
}
public override void OnComponentChanged() {
if (ComponentChangeService != null) {
int cLength = objs.Length;
for (int i = 0; i < cLength; i++) {
ComponentChangeService.OnComponentChanged(objs[i], mergedPd[i], null, null);
}
}
}
}
}
|