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added folding to cache system

This commit is contained in:
Basile Burg 2014-12-13 04:44:11 +01:00
parent 96be761415
commit b93810099f
1 changed files with 40 additions and 9 deletions
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49
src/ce_synmemo.pas
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@ -5,15 +5,14 @@ unit ce_synmemo;
interface
uses
Classes, SysUtils, SynEdit, ce_d2syn, ce_txtsyn ,SynEditHighlighter,
controls, lcltype, LazSynEditText, SynEditKeyCmds, SynHighlighterLFM, SynEditMouseCmds,
ce_common, ce_observer, ce_writableComponent, crc, SynEditFoldedView;
Classes, SysUtils, SynEdit, ce_d2syn, ce_txtsyn ,SynEditHighlighter, controls,
lcltype, LazSynEditText, SynEditKeyCmds, SynHighlighterLFM, SynEditMouseCmds,
SynEditFoldedView, crc, ce_common, ce_observer, ce_writableComponent;
type
TCESynMemo = class;
// TextView, TSynEditFoldedView
TCEFoldCache = class(TCollectionItem)
private
fCollapsed: boolean;
@ -31,11 +30,13 @@ type
fFolds: TCollection;
fCaretPosition: Integer;
fSelectionEnd: Integer;
fSourceFilename: string;
procedure setFolds(someFolds: TCollection);
published
property caretPosition: Integer read fCaretPosition write fCaretPosition;
property sourceFilename: string read fSourceFilename write fSourceFilename;
property folds: TCollection read fFolds write setFolds;
property selectionEnd: Integer read fSelectionEnd write fSelectionEnd;
//property folds: TCollection read fFolds write setFolds;
public
constructor create(aComponent: TComponent); override;
destructor destroy; override;
@ -136,21 +137,51 @@ begin
end;
procedure TCESynMemoCache.beforeSave;
//var
// i: Integer;
// itm : TCEFoldCache;
var
i, start, prev: Integer;
itm : TCEFoldCache;
begin
if fMemo = nil then exit;
//
fCaretPosition := fMemo.SelStart;
fSourceFilename := fMemo.fileName;
fSelectionEnd := fMemo.SelEnd;
//
//TODO-cEditor Cache: folding persistence
// TODO-cEditor Cache: >nested< folding persistence
// cf. other ways: http://forum.lazarus.freepascal.org/index.php?topic=26748.msg164722#msg164722
prev := fMemo.Lines.Count-1;
for i := fMemo.Lines.Count-1 downto 0 do
begin
// - CollapsedLineForFoldAtLine() does not handle the sub-folding.
// - TextView visibility is increased so this is not the standard way of getting the infos.
start := fMemo.TextView.CollapsedLineForFoldAtLine(i);
if start = -1 then
continue;
if start = prev then
continue;
prev := start;
itm := TCEFoldCache(fFolds.Add);
itm.isCollapsed := true;
itm.fLineIndex := start;
end;
end;
procedure TCESynMemoCache.afterLoad;
var
i: integer;
itm : TCEFoldCache;
begin
if fMemo = nil then exit;
// Currently collisions are not handled.
if fMemo.fileName <> fSourceFilename then exit;
//
for i := 0 to fFolds.Count-1 do
begin
itm := TCEFoldCache(fFolds.Items[i]);
if not itm.isCollapsed then
continue;
fMemo.TextView.FoldAtLine(itm.lineIndex-1);
end;
//
fMemo.SelStart := fCaretPosition;
fMemo.SelEnd := fSelectionEnd;