/// Disposes the entire selection manager.
internal void Dispose()
{
// We've got to be careful here. We're one of the last things to go away when
// a form is being torn down, and we've got to be wary if things have pulled out
// already.
host.RemoveService(typeof(ISelectionService));
host.TransactionOpened -= new EventHandler(this.DesignerHost_TransactionOpened);
host.TransactionClosed -= new DesignerTransactionCloseEventHandler(this.DesignerHost_TransactionClosed);
if (host.InTransaction)
{
DesignerHost_TransactionClosed(host, new DesignerTransactionCloseEventArgs(true));
}
host.LoadComplete -= new EventHandler(this.DesignerHost_LoadComplete);
IComponentChangeService cs = (IComponentChangeService)host.GetService(typeof(IComponentChangeService));
if (cs != null)
{
cs.ComponentAdded -= new ComponentEventHandler(this.DesignerHost_ComponentAdd);
cs.ComponentRemoved -= new ComponentEventHandler(this.DesignerHost_ComponentRemove);
cs.ComponentChanged -= new ComponentChangedEventHandler(this.DesignerHost_ComponentChanged);
}
SampleSelectionItem[] sels = new SampleSelectionItem[selectionsByComponent.Values.Count];
selectionsByComponent.Values.CopyTo(sels, 0);
for (int i = 0; i < sels.Length; i++)
{
sels[i].Dispose();
}
selectionsByComponent.Clear();
primarySelection = null;
}
internal void Dispose()
{
this.host.RemoveService(typeof(ISelectionService));
this.host.TransactionOpened -= new EventHandler(this.DesignerHost_TransactionOpened);
this.host.TransactionClosed -= new DesignerTransactionCloseEventHandler(this.DesignerHost_TransactionClosed);
if (this.host.InTransaction)
{
this.DesignerHost_TransactionClosed(this.host, new DesignerTransactionCloseEventArgs(true));
}
this.host.LoadComplete -= new EventHandler(this.DesignerHost_LoadComplete);
IComponentChangeService cs = (IComponentChangeService)this.host.GetService(typeof(IComponentChangeService));
if (cs != null)
{
cs.ComponentAdded -= new ComponentEventHandler(this.DesignerHost_ComponentAdd);
cs.ComponentRemoved -= new ComponentEventHandler(this.DesignerHost_ComponentRemove);
cs.ComponentChanged -= new ComponentChangedEventHandler(this.DesignerHost_ComponentChanged);
}
SampleSelectionItem[] sels = new SampleSelectionItem[this.selectionsByComponent.Values.Count];
this.selectionsByComponent.Values.CopyTo(sels, 0);
for (int i = 0; i < sels.Length; i++)
{
sels[i].Dispose();
}
this.selectionsByComponent.Clear();
this.primarySelection = null;
}
internal void SetPrimarySelection(SampleSelectionItem sel)
{
if (sel != this.primarySelection)
{
if (null != this.primarySelection)
{
this.primarySelection.Primary = false;
}
this.primarySelection = sel;
}
if (null != this.primarySelection)
{
this.primarySelection.Primary = true;
}
}
/// Called anytime the selection has changed. We update our UI for the selection, and
/// then we fire a change event.
private void OnSelectionChanged()
{
if (batchMode)
{
selectionChanged = true;
}
else
{
selectionChanged = false;
// Raise SelectionChanging event - this should be moved to OnSelectionChanging()
// if the implementation requires listening to changING events.
if (SelectionChanging != null)
{
try {
SelectionChanging(this, EventArgs.Empty);;
}
catch (Exception) {
// It is an error to ever throw in this event.
Debug.Fail("Exception thrown in selectionChanging event");
}
}
if (need_clear_selection)
{
need_clear_selection = false;
selectionsByComponent.Clear();
primarySelection = null;
}
if (SelectionChanged != null)
{
try {
SelectionChanged(this, EventArgs.Empty);;
}
catch (Exception) {
// It is an error to ever throw in this event.
Debug.Fail("Exception thrown in selectionChanging event");
}
}
OnSelectionContentsChanged();
}
}
/// Called by the formcore when someone has removed a component. This will
/// remove any selection on the component without disturbing the rest of
/// the selection.
private void DesignerHost_ComponentRemove(object sender, ComponentEventArgs ce)
{
SampleSelectionItem sel = (SampleSelectionItem)selectionsByComponent[ce.Component];
if (sel != null)
{
RemoveSelection(sel);
// If we removed the last selection and we have a designer host, then select the base
// component of the host. Otherwise, it is OK to have an empty selection.
if (selectionsByComponent.Count == 0 && host != null)
{
// Now we have to run through all the components and pick
// the control with the highest z-order.
IComponent[] comps = new IComponent[host.Container.Components.Count];
host.Container.Components.CopyTo(comps, 0);
if (comps == null)
{
return;
}
int maxZOrder = -1;
int defaultIndex = -1;
object maxIndexComp = null;
object baseComp = host.RootComponent;
if (baseComp == null)
{
return;
}
for (int i = comps.Length - 1; i >= 0; i--)
{
if (comps[i] == baseComp)
{
continue;
}
else if (defaultIndex == -1)
{
defaultIndex = i;
}
if (comps[i] is Control)
{
int zorder = ((Control)comps[i]).TabIndex;
if (zorder > maxZOrder)
{
maxZOrder = zorder;
maxIndexComp = (object)comps[i];
}
}
}
if (maxIndexComp == null)
{
if (defaultIndex != -1)
{
maxIndexComp = comps[defaultIndex];
}
else
{
maxIndexComp = baseComp;
}
}
((ISelectionService)this).SetSelectedComponents(new object[] { maxIndexComp }, SelectionTypes.Replace);
}
else
{
OnSelectionChanged();
}
}
else
{
// Component isn't selected, but our list of selectable components is
// different.
OnSelectionContentsChanged();
}
}
/// Adds the given selection to our selection list.
private void AddSelection(SampleSelectionItem sel)
{
selectionsByComponent[sel.Component] = sel;
}
/// Select the given components with the given SelectionType.
void ISelectionService.SetSelectedComponents(ICollection components, SelectionTypes selectionType)
{
bool fToggle = false;
bool fControl = false;
bool fClick = false;
bool fChanged = false; // did we actually change something?
// Catch a null input list
if (components == null)
{
components = new Component[0];
}
if ((selectionType & SelectionTypes.Normal) == SelectionTypes.Normal ||
(selectionType & SelectionTypes.Click) == SelectionTypes.Click)
{
fControl = ((Control.ModifierKeys & Keys.Control) == Keys.Control);
// Only toggle when we are affecting a single control, and
// when we are handling the "mouse" state events (i.e. up/down
// used to show/hide the selection).
//
fToggle = ((Control.ModifierKeys & Keys.Control) != 0 || (Control.ModifierKeys & Keys.Shift) != 0) &&
components.Count == 1 &&
(selectionType & SelectionTypes.MouseUp) != SelectionTypes.MouseUp;
}
if ((selectionType & SelectionTypes.Click) == SelectionTypes.Click)
{
fClick = true;
}
// If we are replacing the selection, only remove the ones that are not in our new list.
// We also handle the special case here of having a singular component selected that's
// already selected. In this case we just move it to the primary selection.
//
if (!fToggle && !fControl)
{
object firstSelection = null;
foreach (object o in components)
{
firstSelection = o;
break;
}
if (fClick && 1 == components.Count && ((ISelectionService)this).GetComponentSelected(firstSelection))
{
SampleSelectionItem oldPrimary = primarySelection;
SetPrimarySelection((SampleSelectionItem)selectionsByComponent[firstSelection]);
if (oldPrimary != primarySelection)
{
fChanged = true;
}
}
else
{
SampleSelectionItem[] selections = new SampleSelectionItem[selectionsByComponent.Values.Count];
selectionsByComponent.Values.CopyTo(selections, 0);
// Even with several hundred components this should be fairly fast
foreach (SampleSelectionItem item in selections)
{
bool remove = true;
foreach (object comp in components)
{
if (comp == item.Component)
{
remove = false;
break;
}
}
if (remove)
{
RemoveSelection(item);
fChanged = true;
}
}
}
}
SampleSelectionItem primarySel = null;
int selectedCount = selectionsByComponent.Count;
// Now do the selection.
foreach (Component comp in components)
{
if (comp != null)
{
SampleSelectionItem s = (SampleSelectionItem)selectionsByComponent[comp];
if (null == s)
{
s = new SampleSelectionItem(this, comp);
AddSelection(s);
if (fControl || fToggle)
{
primarySel = s;
}
fChanged = true;
}
else
{
if (fToggle)
{
// Remove the selection from our list.
RemoveSelection(s);
fChanged = true;
}
}
}
}
if (primarySel != null)
{
SetPrimarySelection(primarySel);
}
// Now notify that our selection has changed
if (fChanged)
{
OnSelectionChanged();
}
}
private void DesignerHost_ComponentRemove(object sender, ComponentEventArgs ce)
{
SampleSelectionItem sel = (SampleSelectionItem)this.selectionsByComponent[ce.Component];
if (sel != null)
{
this.RemoveSelection(sel);
if ((this.selectionsByComponent.Count == 0) && (this.host != null))
{
IComponent[] comps = new IComponent[this.host.Container.Components.Count];
this.host.Container.Components.CopyTo(comps, 0);
if (comps != null)
{
int maxZOrder = -1;
int defaultIndex = -1;
object maxIndexComp = null;
object baseComp = this.host.RootComponent;
if (baseComp != null)
{
for (int i = comps.Length - 1; i >= 0; i--)
{
if (comps[i] != baseComp)
{
if (defaultIndex == -1)
{
defaultIndex = i;
}
if (comps[i] is Control)
{
int zorder = ((Control)comps[i]).TabIndex;
if (zorder > maxZOrder)
{
maxZOrder = zorder;
maxIndexComp = comps[i];
}
}
}
}
if (maxIndexComp == null)
{
if (defaultIndex != -1)
{
maxIndexComp = comps[defaultIndex];
}
else
{
maxIndexComp = baseComp;
}
}
((ISelectionService)this).SetSelectedComponents(new object[] { maxIndexComp }, SelectionTypes.Replace);
}
}
}
else
{
this.OnSelectionChanged();
}
}
else
{
this.OnSelectionContentsChanged();
}
}
void ISelectionService.SetSelectedComponents(ICollection components, SelectionTypes selectionType)
{
bool fToggle = false;
bool fControl = false;
bool fClick = false;
bool fChanged = false;
if (components == null)
{
components = new Component[0];
}
if (((selectionType & SelectionTypes.Auto) == SelectionTypes.Auto) || ((selectionType & SelectionTypes.Click) == SelectionTypes.Click))
{
fControl = (Control.ModifierKeys & Keys.Control) == Keys.Control;
fToggle = ((((Control.ModifierKeys & Keys.Control) != Keys.None) || ((Control.ModifierKeys & Keys.Shift) != Keys.None)) && (components.Count == 1)) && ((selectionType & SelectionTypes.MouseUp) != SelectionTypes.MouseUp);
}
if ((selectionType & SelectionTypes.Click) == SelectionTypes.Click)
{
fClick = true;
}
if (!fToggle && !fControl)
{
object firstSelection = null;
foreach (object o in components)
{
firstSelection = o;
break;
}
if ((fClick && (1 == components.Count)) && ((ISelectionService)this).GetComponentSelected(firstSelection))
{
SampleSelectionItem oldPrimary = this.primarySelection;
this.SetPrimarySelection((SampleSelectionItem)this.selectionsByComponent[firstSelection]);
if (oldPrimary != this.primarySelection)
{
fChanged = true;
}
}
else
{
SampleSelectionItem[] selections = new SampleSelectionItem[this.selectionsByComponent.Values.Count];
this.selectionsByComponent.Values.CopyTo(selections, 0);
foreach (SampleSelectionItem item in selections)
{
bool remove = true;
foreach (object comp in components)
{
if (comp == item.Component)
{
remove = false;
break;
}
}
if (remove)
{
this.RemoveSelection(item);
fChanged = true;
}
}
}
}
SampleSelectionItem primarySel = null;
int selectedCount = this.selectionsByComponent.Count;
foreach (Component comp in components)
{
if (comp != null)
{
SampleSelectionItem s = (SampleSelectionItem)this.selectionsByComponent[comp];
if (null == s)
{
s = new SampleSelectionItem(this, comp);
this.AddSelection(s);
if (fControl || fToggle)
{
primarySel = s;
}
fChanged = true;
}
else if (fToggle)
{
this.RemoveSelection(s);
fChanged = true;
}
}
}
if (primarySel != null)
{
this.SetPrimarySelection(primarySel);
}
if (fChanged)
{
this.OnSelectionChanged();
}
}
internal void Dispose()
{
this.host.RemoveService(typeof(ISelectionService));
this.host.TransactionOpened -= new EventHandler(this.DesignerHost_TransactionOpened);
this.host.TransactionClosed -= new DesignerTransactionCloseEventHandler(this.DesignerHost_TransactionClosed);
if (this.host.InTransaction)
{
this.DesignerHost_TransactionClosed(this.host, new DesignerTransactionCloseEventArgs(true));
}
this.host.LoadComplete -= new EventHandler(this.DesignerHost_LoadComplete);
IComponentChangeService cs = (IComponentChangeService) this.host.GetService(typeof(IComponentChangeService));
if (cs != null)
{
cs.ComponentAdded -= new ComponentEventHandler(this.DesignerHost_ComponentAdd);
cs.ComponentRemoved -= new ComponentEventHandler(this.DesignerHost_ComponentRemove);
cs.ComponentChanged -= new ComponentChangedEventHandler(this.DesignerHost_ComponentChanged);
}
SampleSelectionItem[] sels = new SampleSelectionItem[this.selectionsByComponent.Values.Count];
this.selectionsByComponent.Values.CopyTo(sels, 0);
for (int i = 0; i < sels.Length; i++)
{
sels[i].Dispose();
}
this.selectionsByComponent.Clear();
this.primarySelection = null;
}
/// Sets the given selection object to be the primary selection.
internal void SetPrimarySelection(SampleSelectionItem sel) {
if (sel != primarySelection) {
if (null != primarySelection) {
primarySelection.Primary = false;
}
primarySelection = sel;
}
if (null != primarySelection) {
primarySelection.Primary = true;
}
}
/// Removes the given selection from our selection list
private void RemoveSelection(SampleSelectionItem s) {
selectionsByComponent.Remove(s.Component);
s.Dispose();
}
/// Called anytime the selection has changed. We update our UI for the selection, and
/// then we fire a change event.
private void OnSelectionChanged() {
if (batchMode) {
selectionChanged = true;
}
else {
selectionChanged = false;
// Raise SelectionChanging event - this should be moved to OnSelectionChanging()
// if the implementation requires listening to changING events.
if (SelectionChanging != null) {
try {
SelectionChanging(this, EventArgs.Empty);;
}
catch(Exception) {
// It is an error to ever throw in this event.
Debug.Fail("Exception thrown in selectionChanging event");
}
}
if (need_clear_selection)
{
need_clear_selection = false;
selectionsByComponent.Clear();
primarySelection = null;
}
if (SelectionChanged != null) {
try {
SelectionChanged(this, EventArgs.Empty);;
}
catch(Exception) {
// It is an error to ever throw in this event.
Debug.Fail("Exception thrown in selectionChanging event");
}
}
OnSelectionContentsChanged();
}
}
/// Disposes the entire selection manager.
internal void Dispose() {
// We've got to be careful here. We're one of the last things to go away when
// a form is being torn down, and we've got to be wary if things have pulled out
// already.
host.RemoveService(typeof(ISelectionService));
host.TransactionOpened -= new EventHandler(this.DesignerHost_TransactionOpened);
host.TransactionClosed -= new DesignerTransactionCloseEventHandler(this.DesignerHost_TransactionClosed);
if (host.InTransaction) {
DesignerHost_TransactionClosed(host, new DesignerTransactionCloseEventArgs(true));
}
host.LoadComplete -= new EventHandler(this.DesignerHost_LoadComplete);
IComponentChangeService cs = (IComponentChangeService)host.GetService(typeof(IComponentChangeService));
if (cs != null) {
cs.ComponentAdded -= new ComponentEventHandler(this.DesignerHost_ComponentAdd);
cs.ComponentRemoved -= new ComponentEventHandler(this.DesignerHost_ComponentRemove);
cs.ComponentChanged -= new ComponentChangedEventHandler(this.DesignerHost_ComponentChanged);
}
SampleSelectionItem[] sels = new SampleSelectionItem[selectionsByComponent.Values.Count];
selectionsByComponent.Values.CopyTo(sels, 0);
for (int i = 0; i < sels.Length; i++) {
sels[i].Dispose();
}
selectionsByComponent.Clear();
primarySelection = null;
}
/// Adds the given selection to our selection list.
private void AddSelection(SampleSelectionItem sel) {
selectionsByComponent[sel.Component] = sel;
}
/// Select the given components with the given SelectionType.
void ISelectionService.SetSelectedComponents(ICollection components, SelectionTypes selectionType) {
bool fToggle = false;
bool fControl = false;
bool fClick = false;
bool fChanged = false; // did we actually change something?
// Catch a null input list
if (components == null){
components = new Component[0];
}
if ((selectionType & SelectionTypes.Normal) == SelectionTypes.Normal
|| (selectionType & SelectionTypes.Click) == SelectionTypes.Click) {
fControl = ((Control.ModifierKeys & Keys.Control) == Keys.Control);
// Only toggle when we are affecting a single control, and
// when we are handling the "mouse" state events (i.e. up/down
// used to show/hide the selection).
//
fToggle = ((Control.ModifierKeys & Keys.Control) != 0 || (Control.ModifierKeys & Keys.Shift) != 0)
&& components.Count == 1
&& (selectionType & SelectionTypes.MouseUp) != SelectionTypes.MouseUp;
}
if ((selectionType & SelectionTypes.Click) == SelectionTypes.Click) {
fClick = true;
}
// If we are replacing the selection, only remove the ones that are not in our new list.
// We also handle the special case here of having a singular component selected that's
// already selected. In this case we just move it to the primary selection.
//
if (!fToggle && !fControl) {
object firstSelection = null;
foreach(object o in components) {
firstSelection = o;
break;
}
if (fClick && 1 == components.Count && ((ISelectionService)this).GetComponentSelected(firstSelection)) {
SampleSelectionItem oldPrimary = primarySelection;
SetPrimarySelection((SampleSelectionItem)selectionsByComponent[firstSelection]);
if (oldPrimary != primarySelection) {
fChanged = true;
}
}
else {
SampleSelectionItem[] selections = new SampleSelectionItem[selectionsByComponent.Values.Count];
selectionsByComponent.Values.CopyTo(selections, 0);
// Even with several hundred components this should be fairly fast
foreach(SampleSelectionItem item in selections) {
bool remove = true;
foreach(object comp in components) {
if (comp == item.Component) {
remove = false;
break;
}
}
if (remove) {
RemoveSelection(item);
fChanged = true;
}
}
}
}
SampleSelectionItem primarySel = null;
int selectedCount = selectionsByComponent.Count;
// Now do the selection.
foreach(Component comp in components) {
if (comp != null) {
SampleSelectionItem s = (SampleSelectionItem)selectionsByComponent[comp];
if (null == s) {
s = new SampleSelectionItem(this, comp);
AddSelection(s);
if (fControl || fToggle) {
primarySel = s;
}
fChanged = true;
}
else {
if (fToggle) {
// Remove the selection from our list.
RemoveSelection(s);
fChanged = true;
}
}
}
}
if (primarySel != null) {
SetPrimarySelection(primarySel);
}
// Now notify that our selection has changed
if (fChanged) {
OnSelectionChanged();
}
}
/// Removes the given selection from our selection list
private void RemoveSelection(SampleSelectionItem s)
{
selectionsByComponent.Remove(s.Component);
s.Dispose();
}
void ISelectionService.SetSelectedComponents(ICollection components, SelectionTypes selectionType)
{
bool fToggle = false;
bool fControl = false;
bool fClick = false;
bool fChanged = false;
if (components == null)
{
components = new Component[0];
}
if (((selectionType & SelectionTypes.Auto) == SelectionTypes.Auto) || ((selectionType & SelectionTypes.Click) == SelectionTypes.Click))
{
fControl = (Control.ModifierKeys & Keys.Control) == Keys.Control;
fToggle = ((((Control.ModifierKeys & Keys.Control) != Keys.None) || ((Control.ModifierKeys & Keys.Shift) != Keys.None)) && (components.Count == 1)) && ((selectionType & SelectionTypes.MouseUp) != SelectionTypes.MouseUp);
}
if ((selectionType & SelectionTypes.Click) == SelectionTypes.Click)
{
fClick = true;
}
if (!fToggle && !fControl)
{
object firstSelection = null;
foreach (object o in components)
{
firstSelection = o;
break;
}
if ((fClick && (1 == components.Count)) && ((ISelectionService) this).GetComponentSelected(firstSelection))
{
SampleSelectionItem oldPrimary = this.primarySelection;
this.SetPrimarySelection((SampleSelectionItem) this.selectionsByComponent[firstSelection]);
if (oldPrimary != this.primarySelection)
{
fChanged = true;
}
}
else
{
SampleSelectionItem[] selections = new SampleSelectionItem[this.selectionsByComponent.Values.Count];
this.selectionsByComponent.Values.CopyTo(selections, 0);
foreach (SampleSelectionItem item in selections)
{
bool remove = true;
foreach (object comp in components)
{
if (comp == item.Component)
{
remove = false;
break;
}
}
if (remove)
{
this.RemoveSelection(item);
fChanged = true;
}
}
}
}
SampleSelectionItem primarySel = null;
int selectedCount = this.selectionsByComponent.Count;
foreach (Component comp in components)
{
if (comp != null)
{
SampleSelectionItem s = (SampleSelectionItem) this.selectionsByComponent[comp];
if (null == s)
{
s = new SampleSelectionItem(this, comp);
this.AddSelection(s);
if (fControl || fToggle)
{
primarySel = s;
}
fChanged = true;
}
else if (fToggle)
{
this.RemoveSelection(s);
fChanged = true;
}
}
}
if (primarySel != null)
{
this.SetPrimarySelection(primarySel);
}
if (fChanged)
{
this.OnSelectionChanged();
}
}
