DIRECTORYConvert USING [Parse, Value],MessageWindow USING [Append, Blink],NodeProps USING [GetProp],Rope USING [Concat, ROPE, Size],TextEdit USING [RefTextNode],TextNode USING [EndPos, Location, LocWithin, Offset, Ref, RefTextNode],TEditDocument USING [Selection, SelectionId, TEditDocumentData],TEditInput USING [CloseEvent],TEditLocks USING [LockDocAndTdd, LockRef, UnlockDocAndTdd],TEditOps USING [GetSelContents, RememberCurrentPosition],TEditProfile USING [selectionCaret],TEditRefresh USING [ScrollToEndOfSel],TEditSelection USING [Alloc, Copy, Free, FindWhere, LockSel, MakeSelection, sSel, fSel, pSel, SetSelLooks, UnlockSel],TextFind USING [MalformedPattern],TreeFind USING [CreateFromRope, Finder, Try, TryBackwards],UserTerminal USING [BlinkDisplay],ViewerClasses USING [Viewer];TEditSelectionOpsImpl: CEDAR PROGRAMIMPORTS Convert, MessageWindow, NodeProps, Rope, TextFind, TextNode, TEditInput, TEditLocks, TEditOps, TEditProfile, TEditRefresh, TEditSelection, UserTerminal, TreeFindEXPORTS TEditSelection = BEGINOPEN TEditDocument, TEditSelection;CallWithSelAndDocAndTddLocks: PUBLIC PROC [viewer: ViewerClasses.Viewer,id: SelectionId _ primary,proc: PROC [tdd: TEditDocument.TEditDocumentData, tSel: Selection]] = {Cleanup: PROC = {TEditSelection.UnlockSel[id];IF lockRef # NIL THEN TEditLocks.UnlockDocAndTdd[tdd];IF tSel # NIL THEN Free[tSel] };tSel: Selection;lockRef: TEditLocks.LockRef;tdd: TEditDocument.TEditDocumentData ~ NARROW[viewer.data];IF tdd # NIL THEN {ENABLE UNWIND => Cleanup[];TEditSelection.LockSel[id, "CallWithSelAndDocAndTddLocks"];lockRef _ TEditLocks.LockDocAndTdd[tdd, "CallWithSelAndDocAndTddLocks", read];IF lockRef#NIL THEN {sel: Selection = SELECT id FROMprimary => pSel, secondary => sSel, feedback => fSel, ENDCASE => ERROR;tSel _ Alloc[];TEditSelection.Copy[source: sel, dest: tSel];proc[tdd, tSel] };Cleanup}};Position: PUBLIC PROCEDURE [viewer: ViewerClasses.Viewer] = BEGINcount: INT _ -1;sel: Rope.ROPE _ TEditOps.GetSelContents[];IntFromRope: PROC [r: Rope.ROPE] RETURNS [i: INT] = BEGINv: Convert.Value _ Convert.Parse[[rope[r]]].value;RETURN[NARROW[v, Convert.Value[signed]].signed];END;count _ IntFromRope[sel ! ANY => CONTINUE];IF count>=0 THEN BEGINDoPosition: PROC [tdd: TEditDocument.TEditDocumentData, tSel: Selection] = {tiogaFile: BOOL _ (NodeProps.GetProp[tdd.text, $FromTiogaFile] = $Yes);IF ~tiogaFile THEN count _ count+1;	-- hack to compensate for leading CRtSel.start.pos _ tSel.end.pos _TextNode.LocWithin[tdd.text, count, 1, TRUE]; -- skip comment nodestSel.end.pos.where _ MIN[tSel.end.pos.where+3, TextNode.EndPos[tSel.end.pos.node]];tSel.start.pos.where _ MIN[tSel.end.pos.where, tSel.start.pos.where];IF tSel.start.pos.where=tSel.end.pos.where AND tSel.start.pos.where > 0 THENtSel.start.pos.where _ tSel.start.pos.where-1;tSel.granularity _ char;tSel.viewer _ viewer;tSel.data _ tdd;tSel.pendingDelete _ FALSE;tSel.insertion _ IF TEditProfile.selectionCaret=before THEN before ELSE after;TEditOps.RememberCurrentPosition[viewer];TEditSelection.SetSelLooks[tSel];TEditSelection.MakeSelection[new: tSel, selection: feedback];TEditRefresh.ScrollToEndOfSel[viewer, FALSE, feedback];-- sets bit to cause scroll after refresh};CallWithSelAndDocAndTddLocks[viewer, feedback, DoPosition];ENDELSE { OPEN MessageWindow;Append["Select character count for position.", TRUE];Blink[] };END;Find: PUBLIC PROC [viewer: ViewerClasses.Viewer,findWhere: FindWhere _ anywhere,def, word: BOOLEAN _ FALSE,id: SelectionId _ primary,case: BOOL _ TRUE -- case => case of characters is significant -- ] = BEGINrope: Rope.ROPE = TEditOps.GetSelContents[];IF Rope.Size[rope]=0 THEN { OPEN MessageWindow;Append["Select target for search.", TRUE];Blink[] };FindRope[viewer, rope, findWhere, def, word, id, case];END;FindRope: PUBLIC PROC [viewer: ViewerClasses.Viewer,rope: Rope.ROPE,findWhere: FindWhere _ anywhere,def, word: BOOLEAN _ FALSE,id: SelectionId _ primary,case: BOOL _ TRUE -- case => case of characters is significant -- ] = BEGINIF ~DoFind[viewer, rope, findWhere, def, word, id, case] THEN {MessageWindow.Append["Not found.", TRUE];TRUSTED {UserTerminal.BlinkDisplay[]};RETURN } END;DoFind: PUBLIC PROC [viewer: ViewerClasses.Viewer,rope: Rope.ROPE,findWhere: FindWhere _ anywhere,def, word: BOOLEAN _ FALSE,id: SelectionId _ primary,case: BOOL _ TRUE -- case => case of characters is significant -- ]RETURNS [found: BOOL] = BEGINfinder: TreeFind.Finder;where: TextNode.RefTextNode;first: TextNode.Ref;start, at, atEnd: TextNode.Offset;DoFindIt: PROC [tdd: TEditDocument.TEditDocumentData, tSel: Selection] = {visible: BOOL _ SelectionVisibleInViewer[];Forward: PROC = {IF visible THEN {first _ tSel.end.pos.node;start _ tSel.end.pos.where+1 }ELSE {first _ tdd.lineTable.lines[0].pos.node;start _ tdd.lineTable.lines[0].pos.where };[found,where,at,atEnd,,] _ TreeFind.Try[finder,first,start] };Backward: PROC = {IF visible THEN {first _ tSel.start.pos.node;start _ tSel.start.pos.where }ELSE {first _ tdd.lineTable.lines[0].pos.node;start _ tdd.lineTable.lines[0].pos.where };[found,where,at,atEnd,,] _ TreeFind.TryBackwards[finder,first,start] };SelectionVisibleInViewer: PROC RETURNS [BOOLEAN] = {RETURN [tSel.viewer=viewer AND tSel.end.line IN [0..tdd.lineTable.lastLine]] };SELECT findWhere FROMforwards => Forward[];backwards => Backward[];anywhere => { Forward[]; IF ~found THEN Backward[] };ENDCASE => ERROR;IF ~found THEN RETURN;IF def THEN atEnd _ atEnd-1; -- skip the trailing :tSel.start.pos _ [where,at];tSel.end.pos _ [where,MAX[0,atEnd-1]];tSel.granularity _ IF word THEN word ELSE char;tSel.viewer _ viewer;tSel.data _ tdd;tSel.insertion _ IF TEditProfile.selectionCaret=before THEN before ELSE after;tSel.insertion _ after;tSel.pendingDelete _ FALSE;TEditOps.RememberCurrentPosition[viewer];TEditSelection.SetSelLooks[tSel];TEditSelection.MakeSelection[new: tSel, selection: id];TEditInput.CloseEvent[];TEditRefresh.ScrollToEndOfSel[viewer, FALSE, id];};found _ FALSE;IF Rope.Size[rope] = 0 THEN RETURN;IF def THEN rope _ Rope.Concat[rope,":"];finder _ TreeFind.CreateFromRope[pattern: rope, literal: TRUE, ignoreCase: ~case, word: word !TextFind.MalformedPattern => {MessageWindow.Append["Pattern too long",TRUE];MessageWindow.Blink[];GOTO Bad }];CallWithSelAndDocAndTddLocks[viewer, id, DoFindIt];EXITS Bad => NULL;END;END.   4  -- TEditSelectionOpsImpl.mesa Edited by Paxton on February 7, 1983 9:33 amLast Edited by: Maxwell, January 6, 1983 11:38 amLast Edited by: Plass, April 15, 1983 3:29 pm-- we'd like to use Convert.IntFromRope here, but the resultant-- fatal compiler errors in pass 5 wasted one afternoon already...Э╩!  Ш JЪ╧cJЩJJЩ1JЩ-Ъ╧k	Ш	JЪЬЮЬШJЪЬЮЬШ$JЪЬ
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