/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Bespin.
 *
 * The Initial Developer of the Original Code is
 * Mozilla.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Bespin Team (bespin@mozilla.com)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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var SC = require('sproutcore/runtime').SC;
var t = require('PluginDev');
var LayoutManager = require('controllers/layoutmanager').LayoutManager;

var PANGRAMS =
    "Cwm fjord bank glyphs vext quiz.\n" +
    "Squdgy fez, blank jimp crwth vox!\n" +
    "Jink cwm, zag veldt, fob qursh pyx.\n" +
    "Veldt jynx grimps waqf zho buck.\n" +
    "Junky qoph-flags vext crwd zimb.\n" +
    "Quartz glyph job vex'd cwm finks.\n" +
    "Cwm fjord veg balks nth pyx quiz.\n" +
    "Vext cwm fly, zing, jabs kurd qoph.\n";

exports.testCharacterRectForPosition = function() {
    var layoutManager = LayoutManager.create({
        margin: { left: 0, bottom: 0, top: 0, right: 0 }
    });
    layoutManager.setPath('textStorage.value', PANGRAMS);

    var characterWidth = layoutManager._characterWidth;
    var lineHeight = layoutManager._lineHeight;

    t.deepEqual(layoutManager.characterRectForPosition({
            row:    3,
            column: 3
        }), {
            x:      3 * characterWidth,
            y:      3 * lineHeight,
            width:  characterWidth,
            height: lineHeight
        }, "the character rect and the expected rect for the character at " +
        "position (3,3)");
};

exports.testDimensionsCalculation = function() {
    var layoutManager = LayoutManager.create({
        margin: { left: 0, bottom: 0, top: 0, right: 0 },
    });

    var textStorage = layoutManager.get('textStorage');
    textStorage.set('value',
        "Battlefield Earth\n" +
        "The Star Wars Holiday Special\n" +
        "Manos: The Hands of Fate\n" +
        "Santa Claus Conquers the Martians\n");

    var rect = layoutManager.boundingRect();
    t.equal(rect.height, layoutManager._lineHeight * 5,
        "the total height and the line height times the number of lines");
    t.equal(rect.width, layoutManager._characterWidth *
        "Santa Claus Conquers the Martians".length, "the width and the " +
        "character width times the length of the longest line");

    textStorage.replaceCharacters({
        start:  { row: 2, column: 0 },
        end:    { row: 3, column: "Santa Claus Conquers the Martians".length }
    }, "SuperBabies: Baby Geniuses 2");

    rect = layoutManager.boundingRect();
    t.equal(rect.height, layoutManager._lineHeight * 4,
        "the total and the line height times the new number of lines");
    t.equal(rect.width, layoutManager._characterWidth *
        "The Star Wars Holiday Special".length, "the width and the " +
        "character width times the length of what is now the longest line");
};

exports.testInvalidRects = function() {
    var layoutManager = LayoutManager.create({
        margin: { left: 0, bottom: 0, top: 0, right: 0 }
    });

    var textStorage = layoutManager.get('textStorage');
    textStorage.set('value', "foo\nbar\nbaz\nboo\n");

    var characterWidth = layoutManager._characterWidth;
    var lineHeight = layoutManager._lineHeight;

    var returnedRects;
    layoutManager.addDelegate(SC.Object.create({
        layoutManagerInvalidatedRects: function(sender, rects) {
            returnedRects = rects;
        }
    }));

    textStorage.insertCharacters({ row: 1, column: 1 }, "aaa");
    t.deepEqual(returnedRects[0], {
            x:      characterWidth,
            y:      lineHeight,
            width:  Number.MAX_VALUE,
            height: lineHeight
        }, "the returned rect and the expected rect after no lines changed");

    textStorage.deleteCharacters({
        start:  { row: 1, column: 0 },
        end:    { row: 2, column: 0 }
    });
    t.deepEqual(returnedRects[0], {
        x:      0,
        y:      lineHeight,
        width:  Number.MAX_VALUE,
        height: lineHeight
    }, "the first returned rect and the expected rect after one line was " +
        "deleted");
    t.deepEqual(returnedRects[1], {
        x:      0,
        y:      2 * lineHeight,
        width:  Number.MAX_VALUE,
        height: Number.MAX_VALUE
    }, "the second returned rect and the expected rect after one line was " +
        "deleted");

    textStorage.insertCharacters({ row: 1, column: 1 }, "bar\n");
    t.deepEqual(returnedRects[0], {
        x:      characterWidth,
        y:      lineHeight,
        width:  Number.MAX_VALUE,
        height: lineHeight
    }, "the first returned rect and the expected rect after one line was " +
        "added");
    t.deepEqual(returnedRects[1], {
        x:      0,
        y:      2 * lineHeight,
        width:  Number.MAX_VALUE,
        height: Number.MAX_VALUE
    }, "the second returned rect and the expected rect after one line was " +
        "added");
};

exports.testPointToCharacterMapping = function() {
    var leftMargin = 3, topMargin = 5;
    var layoutManager = LayoutManager.create({
        margin: { left: leftMargin, bottom: 4, top: topMargin, right: 6 }
    });
    var characterWidth = layoutManager._characterWidth;
    var lineHeight = layoutManager._lineHeight;

    layoutManager.setPath('textStorage.value', PANGRAMS);

    var pos = layoutManager.characterAtPoint({
        x: leftMargin + 5 * characterWidth,
        y: topMargin + 2 * lineHeight
    });
    t.deepEqual(pos, { column: 5, row: 2, partialFraction: 0.0 }, "the " +
        "reported character position and the expected character position");

    pos = layoutManager.characterAtPoint({
        x: 100000,
        y: topMargin + 4 * lineHeight
    });
    t.deepEqual(pos, { column: 32, row: 4, partialFraction: 0.0 }, "the " +
        "reported character position and the expected character " +
        "position for a character off the right side of the text area");
};

exports.testRectsForRange = function() {
    var layoutManager = LayoutManager.create({
        margin: { left: 0, bottom: 0, top: 0, right: 0 }
    });
    layoutManager.setPath('textStorage.value', PANGRAMS);

    var characterWidth = layoutManager._characterWidth;
    var lineHeight = layoutManager._lineHeight;
    var maximumWidth = layoutManager._maximumWidth;

    var rects = layoutManager.rectsForRange({
        start:  { row: 2, column: 2 },
        end:    { row: 5, column: 2 }
    });
    t.equal(rects.length, 3, "the length of the rects returned for a " +
        "complex range and 3");
    t.deepEqual(rects[0], {
            x:      2 * characterWidth,
            y:      2 * lineHeight,
            width:  characterWidth * (maximumWidth - 2),
            height: lineHeight
        }, "the first rect returned for a complex range and the expected " +
            "rect");
    t.deepEqual(rects[1], {
            x:      0,
            y:      5 * lineHeight,
            width:  characterWidth * 2,
            height: lineHeight
        }, "the second rect returned for a complex range and the expected " +
            "rect");
    t.deepEqual(rects[2], {
            x:      0,
            y:      3 * lineHeight,
            width:  characterWidth * maximumWidth,
            height: 2 * lineHeight
        }, "the third rect returned for a complex range and the expected " +
            "rect");

    rects = layoutManager.rectsForRange({
        start:  { row: 2, column: 0 },
        end:    { row: 5, column: 0 }
    });
    t.equal(rects.length, 1, "the length of the rects returned for a " +
        "line-spanning range and 1");
    t.deepEqual(rects[0], {
            x:      0,
            y:      2 * lineHeight,
            width:  characterWidth * maximumWidth,
            height: 3 * lineHeight
        }, "the rect returned for a line-spanning range and the expected " +
            "rect");

    rects = layoutManager.rectsForRange({
        start:  { row: 2, column: 3 },
        end:    { row: 2, column: 10 }
    });
    t.equal(rects.length, 1, "the length of the rects returned for a " +
        "single-line range and 1");
    t.deepEqual(rects[0], {
            x:      3 * characterWidth,
            y:      2 * lineHeight,
            width:  characterWidth * 7,
            height: lineHeight
        }, "the rect returned for a single-line range and the expected rect");
};

