Editor/tests/selection/PositionTests.js

// Copyright 2011-2014 UX Productivity Pty Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

function pad(str,length)
{
    str = ""+str;
    while (str.length < length)
        str += " ";
    return str;
}

function selectRange(p,start,end)
{
    var paragraph = Text_analyseParagraph(new Position(p,0));
    var startPos = Paragraph_positionAtOffset(paragraph,start);
    var endPos = Paragraph_positionAtOffset(paragraph,end);
    Selection_set(startPos.node,startPos.offset,endPos.node,endPos.offset);
}

function makeStringArray(input)
{
    var result = new Array();
    for (var i = 0; i < input.length; i++)
        result.push(input[i].toString());
    return result;
}

function createTable(arrays)
{
    var maxLength = 0;
    for (var col = 0; col < arrays.length; col++) {
        if (maxLength < arrays[col].length)
            maxLength = arrays[col].length;
    }
    var colWidths = new Array();
    for (var col = 0; col < arrays.length; col++) {
        var width = 0;
        for (var row = 0; row < arrays[col].length; row++) {
            if (width < arrays[col][row].length)
                width = arrays[col][row].length;
        }
        colWidths.push(width);
    }

    var output = new Array();
    var spacer = "   ->   ";
    for (var row = 0; row < maxLength; row++) {
        for (var col = 0; col < arrays.length; col++) {
            if (col > 0)
                output.push(spacer);
            output.push(pad(arrays[col][row],colWidths[col]));
        }
        output.push("\n");
    }
    return output.join("");
}

function rangeString(text,start,end)
{
    return JSON.stringify(text.substring(0,start) + "[" +
                          text.substring(start,end) + "]" +
                          text.substring(end));
}

var positionList = null

function setPositionList(newList)
{
    UndoManager_addAction(setPositionList,positionList);
    if (newList == null)
        positionList = null;
    else
        positionList = newList.map(function (pos) { return new Position(pos.node,pos.offset); });
}

function getPositionList()
{
    return positionList;
}

function positionTest(start1,end1,start2,end2)
{
    var ps = document.getElementsByTagName("P");

    var p = ps[0];
    var text = p.firstChild;

    var testDescription = "From "+rangeString(text.nodeValue,start1,end1) + "\n" +
                          "To   "+rangeString(text.nodeValue,start2,end2) + "\n";

    var positions = new Array();
    for (var i = 0; i <= text.length; i++)
        positions.push(new Position(text,i));
    setPositionList(positions);

    var origStrings = makeStringArray(positions);
    UndoManager_newGroup();

    Position_trackWhileExecuting(positions,function() { selectRange(p,start1,end1); });
    setPositionList(positions);
    var strings1 = makeStringArray(positions);

    UndoManager_newGroup();

    Position_trackWhileExecuting(positions,function() { selectRange(p,start2,end2); });
    setPositionList(positions);
    var strings2 = makeStringArray(positions);

    UndoManager_undo();
    positions = getPositionList();
    var undo1 = makeStringArray(positions);

    UndoManager_undo();
    positions = getPositionList();
    var undo2 = makeStringArray(positions);

    var checks = new Array();
    for (var i = 0; i < positions.length; i++) {
        var str = "";
        if (undo1[i] == strings1[i])
            str += "YES";
        else
            str += "NO";

        if (undo2[i] == origStrings[i])
            str += "/YES";
        else
            str += "/NO";
        checks.push(str);
    }

    return testDescription + "\n" + createTable([origStrings,strings1,strings2,checks]);
}