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|
unit TableDrag;
interface
uses
gnugettext, Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, TntStdCtrls, ExtCtrls, PNGImage, AuxFuncs, TntForms,
TntExtCtrls, myx_public_interface, UniCodeConsole, VirtualTrees,
MySQLConnection, Options;
type
TTableDragForm = class(TTnTForm)
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure CaptureBG;
procedure TntFormPaint(Sender: TObject);
procedure PlaceFormBelow(WinControl: TWinControl;
PlaceBelow: Boolean = False);
procedure TntFormDragOver(Sender, Source: TObject; X, Y: Integer;
State: TDragState; var Accept: Boolean);
procedure TntFormDragDrop(Sender, Source: TObject; X, Y: Integer);
private
{ Private declarations }
TableDragXPos: Array [0..10] of Integer;
FDragTarget: TClass;
public
{ Public declarations }
property DragTarget: TClass read FDragTarget write FDragTarget;
procedure ShowNoActivate;
end;
function BuildDragSQLCommand(MySQLConn: TMySQLConn;
SourceVT: TVirtualStringTree;
CurrentCommand: WideString; var NewSelStart: integer;
TablAddType: MYX_Q_TABLE_ADD_TYPE = MYX_QTAT_SELECT;
ColumnAddType: MYX_Q_CLAUSE_TYPE = MYX_QCT_SELECT_CLAUSE): WideString;
function GetIdentifyer(MySQLConn: TMySQLConn;
Schema: TMYX_SCHEMA; Table: TMYX_SCHEMA_TABLE = nil;
Column: TMYX_SCHEMA_TABLE_COLUMN = nil): WideString;
implementation
uses
QueryBrowser, PNGTools;
{$R *.dfm}
// -----------------------------------------------------------------------------
procedure TTableDragForm.FormCreate(Sender: TObject);
begin
InitForm(self);
AlphaBlend := Not(MyxCommonOptions.DisableTransparencyEffects);
FDragTarget := TMYX_SCHEMA_TABLE;
end;
// -----------------------------------------------------------------------------
procedure TTableDragForm.FormDestroy(Sender: TObject);
begin
//OverlayPNGImg.Free;
end;
// -----------------------------------------------------------------------------
procedure TTableDragForm.FormClose(Sender: TObject;
var Action: TCloseAction);
begin
//
end;
// -----------------------------------------------------------------------------
procedure TTableDragForm.CaptureBG;
//var DC: HDC;
begin
{DC:=GetDC(0);
try
DesktopImg.Picture.Bitmap.Width:=Width;
DesktopImg.Picture.Bitmap.Height:=Height;
BitBlt(DesktopImg.Picture.Bitmap.Canvas.Handle,
0, 0, Width, Height, DC, Left, Top, SRCCOPY);
finally
ReleaseDc(0, dc);
end;}
end;
// -----------------------------------------------------------------------------
procedure TTableDragForm.TntFormPaint(Sender: TObject);
var
xpos: integer;
begin
Canvas;
with Canvas do
begin
Font.Name:='Tahoma';
Font.Size:=7;
Pen.Color:=$009C9B91;
Brush.Color:=clWhite;
Rectangle(Rect(0, 0,
Width,
Height));
xpos:=Width;
if (FDragTarget = TMYX_SCHEMA_TABLE) then
begin
TableDragXPos[0]:=xpos;
TableDragXPos[1]:=PaintEditButton(Canvas, _('DELETE'), nil, xpos);
TableDragXPos[2]:=PaintEditButton(Canvas,_('INSERT'), nil, xpos);
TableDragXPos[3]:=PaintEditButton(Canvas, _('UPDATE'), nil, xpos);
xpos:=xpos-3;
MoveTo(xpos, 0);
LineTo(xpos, 20);
TableDragXPos[4]:=PaintEditButton(Canvas, _('LEFT OUTER JOIN'), nil, xpos);
TableDragXPos[5]:=PaintEditButton(Canvas, _('JOIN Table(s)'), nil, xpos);
TableDragXPos[6]:=PaintEditButton(Canvas, _('Add Table(s)'), nil, xpos);
xpos:=xpos-3;
MoveTo(xpos, 0);
LineTo(xpos, 20);
TableDragXPos[7]:=PaintEditButton(Canvas, _('SELECT'), nil, xpos);
Font.Color:=clGray;
DrawWideStringText(Canvas.Handle,
PWideChar(_('Drop the table(s) on one of the buttons.')),
Length(_('Drop the table(s) on one of the buttons.')), Rect(4, 4, xpos-3, 4+10));
end
else
if (FDragTarget = TMYX_SCHEMA_TABLE_COLUMN) then
begin
TableDragXPos[0]:=xpos;
TableDragXPos[1]:=PaintEditButton(Canvas, _('ORDER'), nil, xpos);
TableDragXPos[2]:=PaintEditButton(Canvas, _('HAVING'), nil, xpos);
TableDragXPos[3]:=PaintEditButton(Canvas, _('GROUP'), nil, xpos);
TableDragXPos[4]:=PaintEditButton(Canvas, _('WHERE'), nil, xpos);
TableDragXPos[5]:=PaintEditButton(Canvas, _('FROM'), nil, xpos);
TableDragXPos[6]:=PaintEditButton(Canvas, _('SELECT'), nil, xpos);
Font.Color:=clGray;
DrawWideStringText(Canvas.Handle,
PWideChar(_('Drop the column(s) on one of the buttons.')),
Length(_('Drop the column(s) on one of the buttons.')), Rect(4, 4, xpos-3, 4+10));
end;
end;
end;
// -----------------------------------------------------------------------------
procedure TTableDragForm.PlaceFormBelow(WinControl: TWinControl;
PlaceBelow: Boolean);
var
ControlPos: TPoint;
begin
ControlPos:=WinControl.ClientToScreen(Point(0, 0));
if(PlaceBelow)then
begin
Left:=ControlPos.X-2;
Top:=ControlPos.Y+WinControl.Height-3;
Width:=WinControl.Width;
end
else
begin
Left:=ControlPos.X;
Top:=ControlPos.Y+WinControl.Height-20-4;
Width:=WinControl.Width-4;
end;
Height:=20;
end;
// -----------------------------------------------------------------------------
procedure TTableDragForm.TntFormDragOver(Sender, Source: TObject; X,
Y: Integer; State: TDragState; var Accept: Boolean);
begin
Accept:=False;
if (FDragTarget = TMYX_SCHEMA_TABLE) and
(X>TableDragXPos[7]) and (X<TableDragXPos[0])then
Accept:=True
else
if (FDragTarget = TMYX_SCHEMA_TABLE_COLUMN) and
(X>TableDragXPos[6]) and (X<TableDragXPos[0])then
Accept:=True;
end;
// -----------------------------------------------------------------------------
procedure TTableDragForm.TntFormDragDrop(Sender, Source: TObject; X,
Y: Integer);
var
TablAddType: MYX_Q_TABLE_ADD_TYPE;
ColumnAddType: MYX_Q_CLAUSE_TYPE;
NewSelStart: integer;
QueryBrowserForm: TQueryBrowserForm;
begin
TablAddType := MYX_QTAT_UNKNOWN;
ColumnAddType := MYX_QCT_NO_CLAUSE;
QueryBrowserForm:=nil;
if(Source.InheritsFrom(TWinControl))then
if(TWinControl(Source).Owner is TQueryBrowserForm)then
QueryBrowserForm:=TQueryBrowserForm(TWinControl(Source).Owner)
else if(TWinControl(Source).Owner<>nil)then
if(TWinControl(Source).Owner.Owner<>nil)then
if(TWinControl(Source).Owner.Owner is TQueryBrowserForm)then
QueryBrowserForm:=TQueryBrowserForm(TWinControl(Source).Owner.Owner);
if(QueryBrowserForm<>nil)then
begin
if (FDragTarget = TMYX_SCHEMA_TABLE) then
begin
if(X>TableDragXPos[7])and(X<TableDragXPos[6])then
TablAddType:=MYX_QTAT_SELECT
else if(X>TableDragXPos[6])and(X<TableDragXPos[5])then
TablAddType:=MYX_QTAT_SELECT_ADD
else if(X>TableDragXPos[5])and(X<TableDragXPos[4])then
TablAddType:=MYX_QTAT_SELECT_JOIN
else if(X>TableDragXPos[4])and(X<TableDragXPos[3])then
TablAddType:=MYX_QTAT_SELECT_LEFT_OUTER_JOIN
else if(X>TableDragXPos[3])and(X<TableDragXPos[2])then
TablAddType:=MYX_QTAT_UPDATE
else if(X>TableDragXPos[2])and(X<TableDragXPos[1])then
TablAddType:=MYX_QTAT_INSERT
else if(X>TableDragXPos[1])and(X<TableDragXPos[0])then
TablAddType:=MYX_QTAT_DELETE;
with QueryBrowserForm do
begin
if (LastFocusedControl=nil)or(LastFocusedControl = SQLEditor)then
begin
NewSelStart := SQLEditor.SelStart;
CurrentCommand := BuildDragSQLCommand(MySQLConn, SchemataFrame.CatalogVST, CurrentCommand, NewSelStart,
TablAddType);
// Setting the current command causes an update message for the query browser.
// Handle this first before continuing.
Application.ProcessMessages;
SQLEditor.CaretOffset(CurrentCommandStart, NewSelStart);
if SQLEditor.CanFocus then
SQLEditor.SetFocus;
end;
end;
end
else
if (FDragTarget = TMYX_SCHEMA_TABLE_COLUMN) then
begin
if(X>TableDragXPos[6])and(X<TableDragXPos[5])then
ColumnAddType:=MYX_QCT_SELECT_CLAUSE
else if(X>TableDragXPos[5])and(X<TableDragXPos[4])then
ColumnAddType:=MYX_QCT_FROM_CLAUSE
else if(X>TableDragXPos[4])and(X<TableDragXPos[3])then
ColumnAddType:=MYX_QCT_WHERE_CLAUSE
else if(X>TableDragXPos[3])and(X<TableDragXPos[2])then
ColumnAddType:=MYX_QCT_GROUP_CLAUSE
else if(X>TableDragXPos[2])and(X<TableDragXPos[1])then
ColumnAddType:=MYX_QCT_HAVING_CLAUSE
else if(X>TableDragXPos[1])and(X<TableDragXPos[0])then
ColumnAddType:=MYX_QCT_ORDER_CLAUSE;
with QueryBrowserForm do
begin
if(LastFocusedControl=nil)or(LastFocusedControl=SQLEditor)then
begin
SQLEditor.Text := BuildDragSQLCommand(MySQLConn,
SchemataFrame.CatalogVST,
SQLEditor.Text,
NewSelStart,
MYX_QTAT_SELECT, ColumnAddType);
SQLEditor.SelStart := NewSelStart;
SQLEditor.CaretXY := SQLEditor.BlockBegin;
DoQueryEditorChange;
if(SQLEditor.CanFocus)then
SQLEditor.SetFocus;
end
end;
end;
end;
end;
function BuildDragSQLCommand(MySQLConn: TMySQLConn;
SourceVT: TVirtualStringTree;
CurrentCommand: WideString; var NewSelStart: integer;
TablAddType: MYX_Q_TABLE_ADD_TYPE;
ColumnAddType: MYX_Q_CLAUSE_TYPE): WideString;
var i: integer;
SelectedNodes: TNodeArray;
NodeData,
ParentNodeData,
ParentParentNodeData: ^TObject;
SQLCommand: WideString;
TablAddError: MYX_Q_TABLE_ADD_ERROR;
begin
Result:=CurrentCommand;
NewSelStart:=0;
SQLCommand:=CurrentCommand;
if(TablAddType=MYX_QTAT_UNKNOWN)then
begin
if(GetKeyState(VK_CONTROL)<0)then
TablAddType:=MYX_QTAT_SELECT_JOIN
else if(GetKeyState(VK_SHIFT)<0)then
TablAddType:=MYX_QTAT_SELECT_LEFT_OUTER_JOIN
else if(GetKeyState(VK_CONTROL)<0)and(GetKeyState(VK_SHIFT)<0)then
TablAddType:=MYX_QTAT_SELECT_ADD
else
TablAddType:=MYX_QTAT_SELECT;
end;
SelectedNodes:=SourceVT.GetSortedSelection(True);
for i:=0 to SourceVT.SelectedCount-1 do
begin
NodeData:=SourceVT.GetNodeData(SelectedNodes[i]);
if(NodeData<>nil)then
if(NodeData^<>nil)then
begin
if(NodeData^ is TMYX_SCHEMA)then
begin
Result:='USE '+GetIdentifyer(MySQLConn,
TMYX_SCHEMA(NodeData^))+';';
NewSelStart:=Length(Result);
break;
end
else if(NodeData^ is TMYX_SCHEMA_TABLE)then
begin
ParentNodeData:=SourceVT.GetNodeData(
SelectedNodes[i].Parent);
if(ParentNodeData<>nil)then
if(ParentNodeData^<>nil)then
if(ParentNodeData^ is TMYX_SCHEMA)then
begin
SQLCommand:=myx_query_add_table_to_sql(
MySQLConn.MySQL,
MySQLConn.DefaultSchema,
'',
TMYX_SCHEMA(ParentNodeData^).schema_name,
TMYX_SCHEMA_TABLE(NodeData^).table_name,
SQLCommand,
TablAddType,
@NewSelStart,@TablAddError);
Result:=SQLCommand + ';';
end;
end
else
if(NodeData^ is TMYX_SCHEMA_TABLE_COLUMN)then
begin
ParentNodeData := SourceVT.GetNodeData(
SelectedNodes[i].Parent);
ParentParentNodeData := SourceVT.GetNodeData(
SelectedNodes[i].Parent.Parent);
SQLCommand := myx_query_add_column_to_sql(
MySQLConn.MySQL,
MySQLConn.DefaultSchema,
'',
TMYX_SCHEMA(ParentParentNodeData^).schema_name,
TMYX_SCHEMA_TABLE(ParentNodeData^).table_name,
TMYX_SCHEMA_TABLE_COLUMN(NodeData^).column_name,
SQLCommand,
ColumnAddType, @NewSelStart);
Result := SQLCommand + ';';
end;
end;
end;
end;
function GetIdentifyer(MySQLConn: TMySQLConn;
Schema: TMYX_SCHEMA; Table: TMYX_SCHEMA_TABLE = nil;
Column: TMYX_SCHEMA_TABLE_COLUMN = nil): WideString;
begin
if(Schema=nil)then
Exit;
//Only schema given
if(Table=nil)and(Column=nil)then
begin
if(myx_identifier_needs_quotes(Schema.schema_name)=1)then
Result:='`'+Schema.schema_name+'`'
else
Result:=Schema.schema_name;
end
//Schema and table given
else if(Column=nil)then
begin
if(CompareText(Schema.schema_name, MySQLConn.DefaultSchema)=0)then
begin
if(myx_identifier_needs_quotes(Table.table_name)=1)then
Result:='`'+Table.table_name+'`'
else
Result:=Table.table_name;
end
else
begin
if(myx_identifier_needs_quotes(Schema.schema_name)=1)then
Result:='`'+Schema.schema_name+'`'
else
Result:=Schema.schema_name;
if(myx_identifier_needs_quotes(Table.table_name)=1)then
Result:=Result+'.`'+Table.table_name+'`'
else
Result:=Result+'.'+Table.table_name;
end;
end;
end;
//----------------------------------------------------------------------------------------------------------------------
procedure TTableDragForm.ShowNoActivate;
begin
SetWindowPos(Handle, HWND_TOPMOST, 0, 0, 0, 0, SWP_SHOWWINDOW + SWP_NOMOVE + SWP_NOSIZE + SWP_NOACTIVATE);
end;
//----------------------------------------------------------------------------------------------------------------------
end.
|
