experiments/Editor/tests/input/InputTests.js

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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 getNodeArrayText(nodes)
{
    var strings = new Array();
    for (var i = 0; i < nodes.length; i++)
        strings.push(getNodeText(nodes[i]));
    return strings.join("");
}

function textBetweenPositions(from,to)
{
    var range = new Range(from.node,from.offset,to.node,to.offset);
    var contents = Range_cloneContents(range);
    return getNodeArrayText(contents);
}

function testMovement(direction,count)
{
    Outline_init();
    PostponedActions_perform();
    var posId = Input_addPosition(Selection_get().start);
    for (var i = 0; i < count; i++)
        posId = Input_positionFromPositionInDirectionOffset(posId,direction,1);
    Input_setSelectedTextRange(posId,posId);
    showSelection();
}

function testPositionFun(fun,granularity,direction)
{
    var lines = new Array();
    var start = new Position(document.body,0);
    var end = new Position(document.body,document.body.childNodes.length);

    start = Position_closestMatchForwards(start,Position_okForMovement);
    end = Position_closestMatchBackwards(end,Position_okForMovement);

    var pos = start;
    while (pos != null) {

        var before = textBetweenPositions(start,pos);
        var after = textBetweenPositions(pos,end);
        var total = before+"|"+after;

        var result = fun(pos,granularity,direction);
        lines.push(JSON.stringify(total)+" -- "+result+"\n");

        pos = Position_nextMatch(pos,Position_okForMovement);
    }

    return lines.join("");
}

function testPositionWithin(granularity,direction)
{
    return testPositionFun(Input_isPositionWithinTextUnitInDirection,granularity,direction);
}

function testPositionAtBoundary(granularity,direction)
{
    return testPositionFun(Input_isPositionAtBoundaryGranularityInDirection,granularity,direction);
}

function testPositionToBoundary(granularity,direction)
{
    var lines = new Array();
    var start = new Position(document.body,0);
    var end = new Position(document.body,document.body.childNodes.length);

    start = Position_closestMatchForwards(start,Position_okForMovement);
    end = Position_closestMatchBackwards(end,Position_okForMovement);

    var pos = start;
    while (pos != null) {

        var oldBefore = textBetweenPositions(start,pos);
        var oldAfter = textBetweenPositions(pos,end);
        var oldTotal = oldBefore+"|"+oldAfter;

        var resultId = Input_positionFromPositionToBoundaryInDirection(pos,granularity,direction);
        var result = Input_getPosition(resultId);

        var newBefore = textBetweenPositions(start,result);
        var newAfter = textBetweenPositions(result,end);
        var newTotal = newBefore+"|"+newAfter;

        lines.push(JSON.stringify(oldTotal)+" -- "+JSON.stringify(newTotal)+"\n");

        pos = Position_nextMatch(pos,Position_okForMovement);
    }

    return lines.join("");
}

function testRangeEnclosing(granularity,direction)
{
    var lines = new Array();
    var start = new Position(document.body,0);
    var end = new Position(document.body,document.body.childNodes.length);

    start = Position_closestMatchForwards(start,Position_okForMovement);
    end = Position_closestMatchBackwards(end,Position_okForMovement);

    var pos = start;
    while (pos != null) {

        var oldBefore = textBetweenPositions(start,pos);
        var oldAfter = textBetweenPositions(pos,end);
        var oldTotal = oldBefore+"|"+oldAfter;

        var resultIds =
            Input_rangeEnclosingPositionWithGranularityInDirection(pos,granularity,direction);
        if (resultIds != null) {
            var startId = resultIds.startId;
            var endId = resultIds.endId;
            var rangeStart = Input_getPosition(startId);
            var rangeEnd = Input_getPosition(endId);

            var before = textBetweenPositions(start,rangeStart);
            var middle = textBetweenPositions(rangeStart,rangeEnd);
            var after = textBetweenPositions(rangeEnd,end);

            var newTotal = before+"["+middle+"]"+after;

            lines.push(JSON.stringify(oldTotal)+" -- "+JSON.stringify(newTotal)+"\n");
        }
        else {
            lines.push(JSON.stringify(oldTotal)+" -- null\n");
        }

        pos = Position_nextMatch(pos,Position_okForMovement);
    }

    return lines.join("");
}