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{ /***************************************************************************
CompatibilityRestrictions.pas - Lazarus IDE unit
--------------------------------------------------
***************************************************************************/
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA. *
* *
***************************************************************************
Abstract:
Compatiblity restrictions utilities
}
unit CompatibilityRestrictions;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils,
// LCL
Forms, LCLProc, LCLPlatformDef,
// LazUtils
Laz2_DOM, Laz2_XMLRead, Laz2_XMLWrite, StringHashList,
// IdeIntf
OIFavoriteProperties, PackageIntf, ComponentReg,
// IDE
PackageSystem, PackageDefs;
type
TReadRestrictedEvent = procedure (const RestrictedName, WidgetSetName: String) of object;
TReadRestrictedContentEvent = procedure (const Short, Description: String) of object;
PRestriction = ^TRestriction;
TRestriction = record
Name: String;
Short: String;
Description: String;
WidgetSet: TLCLPlatform;
end;
{ TClassHashList }
TClassHashList = class
private
FHashList: TStringHashList;
public
constructor Create;
destructor Destroy; override;
procedure Add(const AClass: TPersistentClass);
procedure AddComponent(const AClass: TComponentClass);
function Find(const AClassName: String): TPersistentClass;
end;
TRestrictedList = array of TRestriction;
{ TRestrictedManager }
TRestrictedManager = class
private
FRestrictedProperties: TOIRestrictedProperties;
FRestrictedList: TRestrictedList;
FRestrictedFiles: TStringList;
FClassList: TClassHashList;
procedure AddPackage(APackage: TLazPackageID);
procedure AddRestricted(const RestrictedName, WidgetSetName: String);
procedure AddRestrictedContent(const Short, Description: String);
procedure AddRestrictedProperty(const RestrictedName, WidgetSetName: String);
procedure GatherRestrictedFiles;
procedure ReadRestrictions(const Filename: String;
OnReadRestricted: TReadRestrictedEvent;
OnReadRestrictedContent: TReadRestrictedContentEvent);
public
constructor Create;
destructor Destroy; override;
function GetRestrictedProperties: TOIRestrictedProperties;
function GetRestrictedList: TRestrictedList;
end;
function GetRestrictedProperties: TOIRestrictedProperties;
function GetRestrictedList: TRestrictedList;
implementation
var
RestrictedManager: TRestrictedManager = nil;
{ TClassHashList }
constructor TClassHashList.Create;
begin
inherited;
FHashList := TStringHashList.Create(False);
end;
destructor TClassHashList.Destroy;
begin
FHashList.Free;
inherited;
end;
procedure TClassHashList.Add(const AClass: TPersistentClass);
var
C: TClass;
begin
C := AClass;
while (C <> nil) and (FHashList.Find(C.ClassName) < 0) do
begin
FHashList.Add(C.ClassName, Pointer(C));
if (C = TPersistent) then Break;
C := C.ClassParent;
end;
end;
procedure TClassHashList.AddComponent(const AClass: TComponentClass);
begin
Add(AClass);
end;
function TClassHashList.Find(const AClassName: String): TPersistentClass;
begin
Result := TPersistentClass(FHashList.Data[AClassName]);
end;
function GetRestrictedProperties: TOIRestrictedProperties;
begin
if RestrictedManager = nil then
RestrictedManager := TRestrictedManager.Create;
Result := RestrictedManager.GetRestrictedProperties;
end;
function GetRestrictedList: TRestrictedList;
begin
if RestrictedManager = nil then
RestrictedManager := TRestrictedManager.Create;
Result := RestrictedManager.GetRestrictedList;
end;
{ TRestrictedManager }
function TRestrictedManager.GetRestrictedProperties: TOIRestrictedProperties;
var
I: Integer;
begin
Result := nil;
FreeAndNil(FRestrictedProperties);
FRestrictedProperties := TOIRestrictedProperties.Create;
FClassList := TClassHashList.Create;
try
IDEComponentPalette.IterateRegisteredClasses(@(FClassList.AddComponent));
FClassList.Add(TForm);
FClassList.Add(TDataModule);
for I := 0 to FRestrictedFiles.Count - 1 do
ReadRestrictions(FRestrictedFiles[I], @AddRestrictedProperty, nil);
Result := FRestrictedProperties;
finally
FreeAndNil(FClassList);
end;
end;
function TRestrictedManager.GetRestrictedList: TRestrictedList;
var
I: Integer;
begin
SetLength(FRestrictedList, 0);
for I := 0 to FRestrictedFiles.Count - 1 do
ReadRestrictions(FRestrictedFiles[I], @AddRestricted, @AddRestrictedContent);
Result := FRestrictedList;
end;
procedure TRestrictedManager.AddPackage(APackage: TLazPackageID);
var
ALazPackage: TLazPackage;
I: Integer;
begin
if APackage = nil then Exit;
ALazPackage := PackageGraph.FindPackageWithID(APackage);
if ALazPackage = nil then Exit;
for I := 0 to ALazPackage.FileCount - 1 do
if ALazPackage.Files[I].FileType = pftIssues then
FRestrictedFiles.Add(ALazPackage.Files[I].GetFullFilename);
end;
procedure TRestrictedManager.AddRestricted(const RestrictedName, WidgetSetName: String);
begin
SetLength(FRestrictedList, Succ(Length(FRestrictedList)));
FRestrictedList[High(FRestrictedList)].Name := RestrictedName;
FRestrictedList[High(FRestrictedList)].WidgetSet := DirNameToLCLPlatform(WidgetSetName);
FRestrictedList[High(FRestrictedList)].Short := '';
FRestrictedList[High(FRestrictedList)].Description := '';
end;
procedure TRestrictedManager.AddRestrictedContent(const Short, Description: String);
begin
if Length(FRestrictedList) = 0 then Exit;
FRestrictedList[High(FRestrictedList)].Short := Short;
FRestrictedList[High(FRestrictedList)].Description := Description;
end;
procedure TRestrictedManager.AddRestrictedProperty(const RestrictedName, WidgetSetName: String);
var
Issue: TOIRestrictedProperty;
AClass: TPersistentClass;
AProperty: String;
P: Integer;
begin
if RestrictedName = '' then Exit;
P := Pos('.', RestrictedName);
if P = 0 then
begin
AClass := FClassList.Find(RestrictedName);
AProperty := '';
end
else
begin
AClass := FClassList.Find(Copy(RestrictedName, 0, P - 1));
AProperty := Copy(RestrictedName, P + 1, MaxInt);
end;
if AClass = nil then
begin
// add as generic widgetset issue
FRestrictedProperties.WidgetSetRestrictions[DirNameToLCLPlatform(WidgetSetName)] := FRestrictedProperties.WidgetSetRestrictions[DirNameToLCLPlatform(WidgetSetName)] + 1;
Exit;
end;
Issue := TOIRestrictedProperty.Create(AClass, AProperty, True);
Issue.WidgetSets := [DirNameToLCLPlatform(WidgetSetName)];
FRestrictedProperties.Add(Issue);
end;
procedure TRestrictedManager.GatherRestrictedFiles;
begin
FRestrictedFiles.Clear;
PackageGraph.IteratePackages([fpfSearchInInstalledPckgs], @AddPackage);
end;
procedure TRestrictedManager.ReadRestrictions(const Filename: String;
OnReadRestricted: TReadRestrictedEvent;
OnReadRestrictedContent: TReadRestrictedContentEvent);
var
IssueFile: TXMLDocument;
R, N: TDOMNode;
function ReadContent(ANode: TDOMNode): String;
var
S: TStringStream;
N: TDOMNode;
begin
Result := '';
S := TStringStream.Create('');
try
N := ANode.FirstChild;
while N <> nil do
begin
WriteXML(N, S);
N := N.NextSibling;
end;
Result := S.DataString;
finally
S.Free;
end;
end;
procedure ParseWidgetSet(ANode: TDOMNode);
var
WidgetSetName, IssueName, Short, Description: String;
IssueNode, AttrNode, IssueContentNode: TDOMNode;
begin
AttrNode := ANode.Attributes.GetNamedItem('name');
if AttrNode <> nil then WidgetSetName := AttrNode.NodeValue
else WidgetSetName := 'win32';
IssueNode := ANode.FirstChild;
while IssueNode <> nil do
begin
if IssueNode.NodeName = 'issue' then
begin
AttrNode := IssueNode.Attributes.GetNamedItem('name');
if AttrNode <> nil then IssueName := AttrNode.NodeValue
else IssueName := 'win32';
if Assigned(OnReadRestricted) then
OnReadRestricted(IssueName, WidgetSetName);
if Assigned(OnReadRestrictedContent) then
begin
Short := '';
Description := '';
IssueContentNode := IssueNode.FirstChild;
while IssueContentNode <> nil do
begin
if IssueContentNode.NodeName = 'short' then
Short := ReadContent(IssueContentNode)
else
if IssueContentNode.NodeName = 'descr' then
Description := ReadContent(IssueContentNode);
IssueContentNode := IssueContentNode.NextSibling;
end;
OnReadRestrictedContent(Short, Description);
end;
end;
IssueNode := IssueNode.NextSibling;
end;
end;
begin
try
ReadXMLFile(IssueFile, Filename);
except
on E: Exception do
DebugLn('TIssueManager.ReadFileIssues failed: ' + E.Message);
end;
try
if IssueFile = nil then Exit;
R := IssueFile.FindNode('package');
if R = nil then Exit;
N := R.FirstChild;
while N <> nil do
begin
if N.NodeName = 'widgetset' then
ParseWidgetSet(N);
N := N.NextSibling;
end;
finally
IssueFile.Free;
end;
end;
constructor TRestrictedManager.Create;
begin
inherited;
FRestrictedFiles := TStringList.Create;
FRestrictedProperties := nil;
GatherRestrictedFiles;
end;
destructor TRestrictedManager.Destroy;
begin
FreeAndNil(FRestrictedFiles);
FreeAndNil(FRestrictedProperties);
inherited Destroy;
end;
finalization
FreeAndNil(RestrictedManager);
end.
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