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unit EditorSql;
// Copyright (C) 2008 MySQL AB, 2008 Sun Microsystems, Inc.
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, TntExtCtrls, UniCodeEditor, UCEHighlighter,
UCESQLHighlighter, StdCtrls, TntStdCtrls, MySQLConnection,
AuxFuncs, TntForms, Options, myx_public_interface, AuxApplicationFuncs,
gnugettext;
type
EditorContentType = (StoredRoutine, View);
TEditorSqlForm = class(TTntForm)
BottomPnl: TTntPanel;
ExecuteSQLBtn: TTntButton;
CancelBtn: TTntButton;
UCESQLHighlighter: TUCESQLHighlighter;
SqlUCE: TUniCodeEdit;
SepBevel: TTntBevel;
procedure FormCreate(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure ExecuteSQLBtnClick(Sender: TObject);
procedure CancelBtnClick(Sender: TObject);
procedure SqlUCEKeyPress(Sender: TObject; var Key: Char);
protected
procedure SetSql(Sql: WideString);
procedure SetPreSql(Sql: WideString);
procedure SetSqlSchema(Sch: WideString);
private
FMySQLConn: TMySQLConn;
FRefreshSchemaObjects: TNotifyEvent;
FDropSQL: WideString;
FSqlSchema: WideString;
FOriginalName: WideString; // currently used oly for views
FOriginalSQL: WideString;
ContentType: EditorContentType;
FChanged: Boolean;
function GetSql: WideString;
function ApplyChanges: Boolean;
public
property SqlSchema: WideString read FSqlSchema write SetSqlSchema;
property DropSQL: WideString read FDropSQL write SetPreSql;
property Sql: WideString read GetSql write SetSql;
property MySQLConn: TMySQLConn read FMySQLConn write FMySQLConn;
property RefreshSchemaObjects: TNotifyEvent read FRefreshSchemaObjects write FRefreshSchemaObjects;
procedure Show;
procedure SetContentType(ct: EditorContentType);
end;
//----------------------------------------------------------------------------------------------------------------------
implementation
{$R *.dfm}
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.FormCreate(Sender: TObject);
begin
InitForm(self);
FMySQLConn := nil;
FRefreshSchemaObjects := nil;
FChanged := False;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.SetContentType(ct: EditorContentType);
begin
ContentType := ct;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
var
Result: Integer;
begin
CanClose := True;
if FChanged then
begin
Result := ShowModalDialog(_('Pending Changes'), _('There are unapplied changes. Do you want to apply them now?'),
myx_mtConfirmation, _('Apply') + #13#10 + _('Discard')+ #13#10 + _('Cancel'));
case Result of
1:
CanClose := ApplyChanges;
2: // Ignore
FChanged := False;
3:
CanClose := False;
end;
end;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.Show;
begin
if(MYXCommonOptions.EditorKeepRoutineEditorOnTop)then
FormStyle := fsStayOnTop
else
FormStyle := fsNormal;
inherited;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.SqlUCEKeyPress(Sender: TObject; var Key: Char);
begin
FChanged := True;
end;
//----------------------------------------------------------------------------------------------------------------------
function TEditorSqlForm.GetSql: WideString;
begin
Result := SqlUCE.Content.Text;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.SetSql(Sql: WideString);
begin
SqlUCE.Content.Text := Sql;
FOriginalSQL := Sql;
FOriginalName := myx_dbm_get_view_name_from_query(Sql);
FChanged := False;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.SetSqlSchema(Sch: WideString);
begin
FSqlSchema:=Sch;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.SetPreSql(Sql: WideString);
begin
FDropSQL := Sql;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.ExecuteSQLBtnClick(Sender: TObject);
begin
if ApplyChanges then
Close;
end;
//----------------------------------------------------------------------------------------------------------------------
function TEditorSqlForm.ApplyChanges: Boolean;
// Applies the current changes in the editor to the object and returns True if that was succesfull.
var
NewObjectName: WideString;
DropOriginalView: Boolean;
OldDropSQL: WideString;
begin
Result := not FChanged;
if not FChanged then
if ShowOptionalModalDialog(_('No changes to apply'),
_('There were no changes. Do you still want to send the SQL command? '),
myx_mtWarning, _('Yes') + #13#10 + _('No'), True, '') = 2 then
Exit;
DropOriginalView := False;
OldDropSQL := FDropSQL;
if Assigned(FMySQLConn) then
begin
if FSqlSchema <> '' then
MySQLConn.DefaultSchema := SqlSchema;
if FDropSQL <> '' then
begin
NewObjectName := myx_dbm_get_view_name_from_query(Sql);
if (FOriginalName <> '') and (NewObjectName <> FOriginalName) then
begin
if ShowOptionalModalDialog(_('Object name has changed'),
_('Would you like to keep the original object? '),
myx_mtWarning, _('Yes') + #13#10 + _('No'), True, '') = 2 then
begin
DropOriginalView := True;
end;
end
else
if ContentType = View then
begin
// old view definition is not dropped silently anymore
// instead we add 'or replace' to view's definition
// when start editing
//FMySQLConn.ExecuteDirect(PreSql);
FDropSQL := '';
end
else
begin
// Assume editing a stored routine here.
// Drop old definition, we have a copy for restauration if necessary.
FMySQLConn.ExecuteDirect(DropSQL);
FDropSQL := '';
end
end;
if FMySQLConn.ExecuteDirect(Sql) then
begin
if DropOriginalView then
begin
FMySQLConn.ExecuteDirect(FDropSQL);
FDropSQL := '';
end;
if (Assigned(FRefreshSchemaObjects)) then
FRefreshSchemaObjects(Self);
Result := True;
end
else
begin
// A problem appeared so we need to restore the original SQL unless it isn't dropped yet.
if FDropSQL = '' then
begin
FMySQLConn.ExecuteDirect(FOriginalSQL);
FDropSQL := OldDropSQL;
end;
end;
end;
if Result then
FChanged := False;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TEditorSqlForm.CancelBtnClick(Sender: TObject);
begin
FChanged := False;
Close;
end;
//----------------------------------------------------------------------------------------------------------------------
end.
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