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ShellCtrls: Raise an exception when trying to set an invalid Root for TShellTreeView and TShellListview (Delphi compatibility).

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git-svn-id: trunk@40734 -
This commit is contained in:
bart 2013-04-07 13:11:04 +00:00
parent a0924e6248
commit b379a5290b
1 changed files with 14 additions and 0 deletions
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14
lcl/shellctrls.pas
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@ -269,6 +269,10 @@ type
property ShellTreeView;
end;
const
//ToDo: make it a resource string
SShellCtrlsInvalidRoot = '%s is not a valid path.';
procedure Register;
implementation
@ -342,6 +346,11 @@ var
begin
//ToDo: raise an exception if AValue is not valid
if FRoot=AValue then exit;
//Delphi raises an unspecified exception in this case, but don't crash the IDE at designtime
if not (csDesigning in ComponentState)
and (AValue <> '')
and not DirectoryExistsUtf8(ExcludeTrailingPathDelimiter(ExpandFilename(AValue))) then
Raise Exception.CreateFmt(SShellCtrlsInvalidRoot,[AValue]);
FRoot:=AValue;
Items.Clear;
if FRoot = '' then
@ -806,6 +815,11 @@ procedure TCustomShellListView.SetRoot(const Value: string);
begin
if FRoot <> Value then
begin
//Delphi raises an unspecified exception in this case, but don't crash the IDE at designtime
if not (csDesigning in ComponentState)
and (Value <> '')
and not DirectoryExistsUtf8(ExcludeTrailingPathDelimiter(ExpandFilename(Value))) then
Raise Exception.CreateFmt(SShellCtrlsInvalidRoot,[Value]);
FRoot := Value;
Clear;
Items.Clear;