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redips-drag-source.js
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redips-drag-source.js
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/*
Copyright (c) 2008-2020, www.redips.net All rights reserved.
Code licensed under the BSD License: http://www.redips.net/license/
http://www.redips.net/javascript/drag-and-drop-table-content/
Version 5.3.1
Dec 1, 2020.
*/
/* eslint-env browser */
/* eslint
semi: ["error", "always"],
indent: [2, "tab"],
no-tabs: 0,
no-multiple-empty-lines: ["error", {"max": 2, "maxEOF": 1}],
one-var: ["error", "always"] */
/* reveal module-pattern */
/* enable strict mode */
'use strict';
/**
* @name REDIPS
* @description create REDIPS namespace (if is not already defined in another REDIPS package)
*/
var REDIPS = REDIPS || {}; // eslint-disable-line no-use-before-define
/**
* @namespace
* @description REDIPS.drag is a JavaScript drag and drop library focused on dragging table content (DIV elements) and table rows.
* @name REDIPS.drag
* @author darko.bunic@google.com (Darko Bunic)
* @see <a href="http://www.redips.net/javascript/redips-drag-documentation-appendix-a/" title="REDIPS.drag documentation - Appendix A">REDIPS.drag documentation - Appendix A</a>
*
* <a href="https://jsfiddle.net/user/dbunic/fiddles/" title="REDIPS.drag examples on jsFiddle">jsFiddle examples</a>
* <a href="http://www.redips.net/javascript/drag-and-drop-table-content-animation/">Drag and drop table content plus animation</a>
* <a href="http://www.redips.net/javascript/drag-and-drop-table-row/">Drag and drop table rows</a>
* <a href="http://www.redips.net/javascript/drag-and-drop-table-content/">Drag and Drop table content</a>
* <a href="http://www.redips.net/javascript/drag-and-drop-content-shift/">JavaScript drag and drop plus content shift</a>
* @version 5.3.1 (2020-12-01)
*/
REDIPS.drag = (function () {
//
// methods
//
var init, // initialization
initTables, // table initialization
enableDrag, // method attaches / detaches onmousedown and onscroll event handlers for DIV elements
enableTable, // method enables / disables tables (selected by className) to accept elements
clearTable, // method clears table (all DIV elements from HTML table will be deleted)
imgOnMouseMove, // needed to set onmousemove event handler for images
handlerOnMouseDown, // onmousedown handler
handlerOnDblClick, // ondblclick handler (calls public event.dblClicked)
tableTop, // set current table group in "tables" array to the array top
handlerOnMouseUp, // onmouseup handler
handlerOnMouseMove, // onmousemove handler for the document level
elementDrop, // drop element to the table cell
elementDeleted, // actions needed after element is deleted (call event handler, updatig, climit1_X or climit2_X classnames, content shifting ...)
resetStyles, // reset object styles after element is dropped
registerEvents, // register event listeners for DIV element
cellChanged, // private method called from handlerOnMouseMove(), autoScrollX(), autoScrollY()
handlerOnResize, // onresize window event handler
setTableRowColumn, // function sets current table, row and cell
setPosition, // function sets color for the current table cell and remembers previous position and color
setTdStyle, // method sets background color and border styles for TD
getTdStyle, // method returns object containing background color and border styles for TD
boxOffset, // calculates object (box) offset (top, right, bottom, left)
calculateCells, // calculates table columns and row offsets (cells dimensions)
getScrollPosition, // returns scroll positions in array
autoScrollX, // horizontal auto scroll function
autoScrollY, // vertical auto scroll function
cloneObject, // clone object (DIV element)
copyProperties, // method copies custom properties from source element to the cloned element.
cloneLimit, // clone limit (after cloning object, take care about climit1_X or climit2_X classnames)
elementControl, // method returns true or false if element needs to have control
getStyle, // method returns style value of requested object and style name
findParent, // method returns a reference of the required parent element
findCell, // method returns first or last cell: rowIndex, cellIndex and cell reference (input is "first" or "last" parameter and table or object within table)
saveContent, // scan tables and return query string or JSON text
loadContent, // method loads content to the target table; input parameters are target table and JSON, JSON text or URL of JSON service
loadContentHandler, // handler needed for loadContent method in case if input parameter is URL of JSON service
insertContent, // insert DIV content to the target table, input parameters are target table and JSON text
ajaxCall, // method calls AJAX service and runs callback function
relocate, // relocate objects from source cell to the target cell (source and target cells are input parameters)
emptyCell, // method removes elements from table cell
shiftCells, // method shifts table content to the left or right (useful for content where the order should be preserved)
cellList, // method returns cell list with new coordinates (it takes care about rowspan/colspan cells)
maxCols, // method returns maximum number of columns in a table
moveObject, // method moves object to the destination table, row and cell
deleteObject, // method deletes DIV element
animateObject, // object animation
getTableIndex, // find table index - because tables array is sorted on every element click
getPosition, // returns position in format: tableIndex, rowIndex and cellIndex (input parameter is optional)
rowOpacity, // method sets opacity to table row (el, opacity, color)
rowEmpty, // method marks selected row as empty (input parameters are table index and row index)
rowClone, // clone table row - input parameter is DIV with class name "redips-row" -> DIV class="redips-drag redips-row"
rowDrop, // function drops (delete old & insert new) table row (input parameters are current table and row)
formElements, // set form values in cloned row (to prevent reset values of form elements)
normalize, // private method returns normalized spaces from input string
hasChilds, // private method (returns true if element contains child nodes with nodeType === 1)
//
// private parameters
//
objMargin = null, // space from clicked point to the object bounds (top, right, bottom, left)
regexDrag = /\bredips-drag\b/i, // regular expression to search "redips-drag" class name
// window width and height (parameters are set in onload and onresize event handler)
// just for a note: window and Window is reserved word in JS so I named variable "screen")
screen = {width: 0,
height: 0},
// define scroll object with contained properties (this is private property)
scrollData = {width: null, // scroll width of the window (it is usually greater then window)
height: null, // scroll height of the window (it is usually greater then window)
container: [], // scrollable container areas (contains autoscroll areas, reference to the container and scroll direction)
obj: null}, // scroll object (needed in autoscroll for recursive calls)
edge = {page: {x: 0, y: 0}, // autoscroll bound values for page and div as scrollable container
div: {x: 0, y: 0}, // closer to the edge, faster scrolling
flag: {x: 0, y: 0}}, // flags are needed to prevent multiple calls of autoScrollX and autoScrollY from onmousemove event handler
bgStyleOld, // (object) old td styles (background color and border styles)
tables = [], // table offsets and row offsets (initialized in onload event)
sortIdx, // sort index needed for sorting tables in tableTop()
moved, // (boolean) true if element is moved
cloned, // (boolean) true if element is cloned
clonedId = [], // needed for increment ID of cloned elements
currentCell = [], // current cell bounds (top, right, bottom, left) and "containTable" flag for nested tables
dragContainer = null, // drag container reference
divBox = null, // div drag box: top, right, bottom and left margin (decrease number calls of setTableRowColumn)
pointer = {x: 0, y: 0}, // mouse pointer position (this properties are set in handlerOnMouseMove() - needed for autoscroll)
threshold = {x: 0, // initial x, y position of mouse pointer
y: 0,
value: 7, // threshold distance value
flag: false}, // threshold flag
shiftKey = false, // (boolean) true if shift key is pressed (set in handler_mousedown)
cloneClass = false, // (boolean) true if clicked element contains clone in class name (set in handler_mousedown)
animationCounter = [], // (array) counter of animated elements to be shifted before table should be enabled
windowScrollPosition, // (array) top and left window offset (set in calculateCells and used in boxOffset)
xhr, // XMLHttpRequest object
// selected, previous and source table, row and cell (private parameters too)
table = null,
tableOld = null,
tableSource = null,
row = null,
rowOld = null,
rowSource = null,
cell = null,
cellOld = null,
cellSource = null,
//
// public properties (variables in the private scope revealed as public - see init() method
//
//
obj = false, // (object) moved object
objOld = false, // (object) previously moved object (before clicked or cloned)
mode = 'cell', // (string) drag mode: "cell" or "row" (default is cell)
// (object) defines color and border styles for current TD and TR
// hover.borderTr defines border color used in "row" mode to show whether row will be dropped above or below current row
// borderTd and borderTr are initially undefined
hover = {colorTd: '#E7AB83',
colorTr: '#E7AB83'},
scroll = {enable: true, // (boolean) enable/disable autoscroll function (default is true)
bound: 25, // (integer) bound width for autoscroll
speed: 20}, // (integer) scroll speed in milliseconds
only = {div: {}, // (object) DIVid -> classname; defined DIV elements can be placed only to the 'redips-only' TD cells (TD should be marked with special className)
divClass: {}, // (object) DIVClass -> classname; DIV elements with defined className can be placed to 'redips-only' TD (TD should be marked with special className)
cname: 'redips-only', // (string) class name for marked cells (default is 'redips-only') - only defined objects can be placed there
other: 'deny'}, // (string) allow / deny dropping marked objects with "redips-only" to other cells
mark = {action: 'deny', // (string) default action form marked TD is deny
cname: 'redips-mark', // (string) class name for marked cells
exception: {}, // (object) DIV id exception for marked cell
exceptionClass: {}}, // (object) DIV class name exception for marked cell
style = {borderEnabled: 'solid', // (string) border style for enabled elements
borderDisabled: 'dotted', // (string) border style for disabled elements
opacityDisabled: '', // (integer) set opacity for disabled elements
rowEmptyColor: 'white'}, // (string) color of empty row
tableSort = true, // (boolean) sort tables on DIV element click
trash = {className: 'redips-trash', // (object) contains redips-trash class name and confirmation questions for delete DIV or ROW
question: null,
questionRow: null},
saveParamName = 'p', // (string) save content parameter name
dropMode = 'multiple', // (string) dropMode has the following options: multiple, single, switch, switching and overwrite
multipleDrop = 'bottom', // (string) defines position of dropped element in case of 'multiple' drop option
td = {}, // (object) contains reference to source (set in onmousedown), current (set in onmousemove and autoscroll), previous (set in onmousemove and autoscroll) and target cell (set in onmouseup)
animation = {pause: 20, // (object) animation pause (integer), step (integer) and shift (boolean)
step: 2,
shift: false},
// (object)
shift = {mode: 'horizontal1', // shift modes (horizontal1, horizontal2, vertical1, vertical2)
after: 'default', // how to shift elements (always, if DIV element is dropped to the empty cell as well or if DIV element is deleted)
overflow: 'bunch'}, // what to do with overflowed DIV (bunch, delete, source)
clone = {keyDiv: false, // (boolean) if true, elements could be cloned with pressed SHIFT key
keyRow: false, // (boolean) if true, rows could be cloned with pressed SHIFT key
sendBack: false, // (boolean) if true, then cloned element can be returned to its source
drop: false}, // (boolean) if true, then cloned element will be always dropped to the table no matter if dropped outside of the table
rowDropMode = 'before', // (string) drop row before or after highlighted row (values are "before" or "after")
// (object) event handlers
event = {changed: function () {},
clicked: function () {},
cloned: function () {},
clonedDropped: function () {},
clonedEnd1: function () {},
clonedEnd2: function () {},
dblClicked: function () {},
deleted: function () {},
dropped: function () {},
droppedBefore: function () {},
finish: function () {},
moved: function () {},
notCloned: function () {},
notMoved: function () {},
shiftOverflow: function () {},
relocateBefore: function () {},
relocateAfter: function () {},
relocateEnd: function () {},
rowChanged: function () {},
rowClicked: function () {},
rowCloned: function () {},
rowDeleted: function () {},
rowDropped: function () {},
rowDroppedBefore: function () {},
rowDroppedSource: function () {},
rowMoved: function () {},
rowNotCloned: function () {},
rowNotMoved: function () {},
rowUndeleted: function () {},
switched: function () {},
undeleted: function () {}},
// (object) error handlers
error = {ajax: function () {},
loadContent: function () {}};
/**
* Drag container initialization. It should be called at least once and it's possible to call a method many times.
* Every page should have at least one drag container.
* If REDIPS.drag.init() is called without input parameter, library will search for drag container with id="redips-drag".
* Only tables inside drag container will be scanned. It is possible to have several drag containers totaly separated (elements from one container will not be visible to other drag containers).
* "init" method calls initTables and enableDrag. If tables are generated dynamically then REDIPS.init() method should be called to set custom properties to tables (table initialization).
* @param {String} [dc] Drag container Id (default is "redips-drag").
* @example
* // init drag container (with default id="redips-drag")
* REDIPS.drag.init();
* <nl/>
* // init drag container with id="my-drag1"
* REDIPS.drag.init('my-drag1');
* @public
* @see <a href="#initTables">initTables</a>
* @see <a href="#enableDrag">enableDrag</a>
* @function
* @name REDIPS.drag#init
*/
init = function (dc) {
// define local variables
var i, // used in local for loops
imgs, // collect images inside div=redips-drag
redipsClone; // reference to the DIV element needed for cloned elements
// if drag container is undefined or input parameter is not a string, then set reference to DIV element with default id="redips-drag"
if (dc === undefined || typeof (dc) !== 'string') {
dc = 'redips-drag';
}
// set reference to the drag container
dragContainer = document.getElementById(dc);
// if drag container is not set then throw an exception
if (dragContainer === null) {
throw new Error('REDIPS.drag: drag container is not set');
}
// set initial window scroll position
windowScrollPosition = getScrollPosition();
// append DIV id="redips_clone" if DIV doesn't exist (needed for cloning DIV elements)
// if automatic creation isn't precise enough, user can manually create and place element with id="redips_clone" to prevent window expanding
// (then this code will be skipped)
if (!document.getElementById('redips_clone')) {
redipsClone = document.createElement('div');
redipsClone.id = 'redips_clone';
redipsClone.style.width = redipsClone.style.height = '1px';
dragContainer.appendChild(redipsClone);
}
// attach onmousedown event handler to the DIV elements
// attach onscroll='calculateCells' for DIV elements with 'scroll' in class name (prepare scrollable container areas)
enableDrag('init');
// initialize table array
// here was the following comment: "initTables should go after enableDrag because sca is attached to the table if table belongs to the scrollable container"
// not sure about order of enableDrag and initTable - needed some further testing
initTables();
// set initial window width/height, scroll width/height and define onresize event handler
// onresize event handler calls calculate columns
handlerOnResize();
REDIPS.event.add(window, 'resize', handlerOnResize);
// collect images inside drag container
imgs = dragContainer.getElementsByTagName('img');
// disable onmousemove/ontouchmove event for images to prevent default action of onmousemove event (needed for IE to enable dragging on image)
for (i = 0; i < imgs.length; i++) {
REDIPS.event.add(imgs[i], 'mousemove', imgOnMouseMove);
REDIPS.event.add(imgs[i], 'touchmove', imgOnMouseMove);
}
// attach onscroll event to the window (needed for recalculating table cells positions)
REDIPS.event.add(window, 'scroll', calculateCells);
};
/**
* Needed to set "false" for onmousemove event on images. This way, images from DIV element will not be enabled for dragging by default.
* imgOnMouseMove is attached as handler to all images inside drag container.
* Multiple calling of REDIPS.drag.init() will not attach the same event handler to the images.
* @private
* @memberOf REDIPS.drag#
* @see <a href="#init">init</a>
*/
imgOnMouseMove = function () {
return false;
};
/**
* Tables layout initialization (preparing internal "tables" array).
* Method searches for all tables inside defined selectors and prepares "tables" array. Default selector is "#redips-drag table".
* Tables with className "redips-nolayout" are ignored (e.g. table with "redips-nolayout" class name in DIV element can be dragged as any other content).
* "tables" array is one of the main parts of REDIPS.drag library.
* @example
* // call initTables after new empty table is added to the div#redips-drag
* // REDIPS.init() method will also work but with some overhead
* REDIPS.drag.initTables();
* <nl/>
* // change default selector for table search (div#sticky may contain table that is attached out of default drag container)
* // this means that table should not be a part of div#redips-drag, but it should be positioned within drag container otherwise dragging will not work
* REDIPS.drag.initTables('#my-drag table, #sticky table');
* <nl/>
* // if new table is not empty and contains DIV elements then they should be enabled also
* // DIV elements in "redips-drag" container are enabled by default
* REDIPS.drag.initTables('#my-drag table, #sticky table');
* REDIPS.drag.enableDrag(true, '#sticky div');
* @param {String} [selector] Defines selector for table search (default id "#redips-drag table").
* @public
* @function
* @name REDIPS.drag#initTables
*/
initTables = function (selector) {
var i, j, k, // loop variables
element, // used in searhing parent nodes of found tables below div id="redips-drag"
level, // (integer) 0 - ground table, 1 - nested table, 2 - nested nested table, 3 - nested nested nested table ...
groupIdx, // tables group index (ground table and its nested tables will have the same group)
tableNodeList, // nodelist of tables found inside defined selectors (querySelector returns node list and it's not alive)
nestedTables, // nested tables nodelist (search for nested tables for every "ground" table)
tdNodeList, // td nodeList (needed for search rowspan attribute)
rowspan; // flag to set if table contains rowspaned cells
// empty tables array
// http://stackoverflow.com/questions/1232040/how-to-empty-an-array-in-javascript
tables.length = 0;
// if selector is undefined then use reference of current drag container
if (selector === undefined) {
tableNodeList = dragContainer.getElementsByTagName('table');
}
// otherwise prepare tables node list based on defined selector
// node list returned by querySelectorAll is not alive
else {
tableNodeList = document.querySelectorAll(selector);
}
// loop through tables and define table sort parameter
for (i = 0, j = 0; i < tableNodeList.length; i++) {
// skip table if table belongs to the "redipsClone" container (possible for cloned rows - if initTables() is called after rowClone())
// or table has "redips-nolayout" className
if (tableNodeList[i].parentNode.id === 'redips_clone' || tableNodeList[i].className.indexOf('redips-nolayout') > -1) {
continue;
}
// set start element for "do" loop
element = tableNodeList[i].parentNode;
// set initial value for nested level
level = 0;
// go up through DOM until DIV id="redips-drag" found (drag container)
do {
// if "TD" found then this is nested table
if (element.nodeName === 'TD') {
// increase nested level
level++;
}
// go one level up
element = element.parentNode;
} while (element && element !== dragContainer);
// copy table reference to the static list
tables[j] = tableNodeList[i];
// create a "property object" in which all custom properties will be saved (if "redips" property doesn't exist)
if (!tables[j].redips) {
tables[j].redips = {};
}
// set redips.container to the table (needed in case when row is cloned)
// ATTENTION! Here is needed additional work because table outside div#redips-drag can be added to the "tables" array ...
tables[j].redips.container = dragContainer;
// set nested level (needed for sorting in "tables" array)
// level === 0 - means that this is "ground" table ("ground" table may contain nested tables)
tables[j].redips.nestedLevel = level;
// set original table index (needed for sorting "tables" array to the original order in saveContent() function)
tables[j].redips.idx = j;
// define animationCounter per table
animationCounter[j] = 0;
// prepare td nodeList of current table
tdNodeList = tables[j].getElementsByTagName('td');
// loop through nodeList and search for rowspaned cells
for (k = 0, rowspan = false; k < tdNodeList.length; k++) {
// if only one rowspaned cell is found set flag to "true" and break loop
if (tdNodeList[k].rowSpan > 1) {
rowspan = true;
break;
}
}
// set redips.rowspan flag - needed in setTableRowColumn()
tables[j].redips.rowspan = rowspan;
// increment j counter
j++;
}
/*
* define "redips.nestedGroup" and initial "redips.sort" parameter for each table
*
* for example if drag area contains two tables and one of them has nested tables then this code will create two groups
* with the following redips.sort values: 100, 200, and 201
* 100 - "ground" table of the first group
* 200 - "ground" table of the second group
* 201 - nested table of the second table group
*
* this means that nested table of second group will always be sorted before its "ground" table
* after clicking on DIV element in "ground" table of second group or nested table in second group array order will be: 201, 200 and 100
* after clicking on DIV element in "ground" table of first group array order will be: 100, 201, 200
*
* actually, sortIdx will be increased and sorted result will be: 300, 201, 200
* and again clicking on element in nested table sorted result will be: 401, 400, 300
* and so on ...
*/
for (i = 0, groupIdx = sortIdx = 1; i < tables.length; i++) {
// if table is "ground" table (lowest level) search for nested tables
if (tables[i].redips.nestedLevel === 0) {
// set group index for ground table and initial sort index
tables[i].redips.nestedGroup = groupIdx;
tables[i].redips.sort = sortIdx * 100;
// search for nested tables (if there is any)
nestedTables = tables[i].getElementsByTagName('table');
// open loop for every nested table
for (j = 0; j < nestedTables.length; j++) {
// skip table if table contains "redips-nolayout" className
if (nestedTables[j].className.indexOf('redips-nolayout') > -1) {
continue;
}
// set group index and initial sort index
nestedTables[j].redips.nestedGroup = groupIdx;
nestedTables[j].redips.sort = sortIdx * 100 + nestedTables[j].redips.nestedLevel;
}
// increase group index and sort index (sortIdx is private parameter of REDIPS.drag)
groupIdx++;
sortIdx++;
}
}
};
/**
* onmousedown event handler
* This event handler is attached to every DIV element in drag container - called after click on DIV element in HTML table
* See "enableDrag" for more detals.
* @param {Event} e Event information.
* @see <a href="#enableDrag">enableDrag</a>
* @see <a href="#handlerOnDblClick">handlerOnDblClick</a>
* @private
* @memberOf REDIPS.drag#
*/
handlerOnMouseDown = function (e) {
var evt = e || window.event, // define event (cross browser)
offset, // object offset
mouseButton, // start drag if left mouse button is pressed
position, // position of table or container box of table (if has position:fixed then exclude scroll offset)
X, Y; // X and Y position of mouse pointer
// if current DIV element is animated, then disable dragging of this element
if (this.redips.animated === true) {
return true;
}
// stop event propagation (only first clicked element will register onmousedown event)
// needed in case of placing table inside of <div class="redips-drag"> (after element was dropped to this table it couldn't be moved out
// any more - table and element moved together because table captures mousedown event also in bubbling proces)
evt.cancelBubble = true;
if (evt.stopPropagation) {
evt.stopPropagation();
}
// set true or false if shift key is pressed
shiftKey = evt.shiftKey;
// define which mouse button was pressed
if (evt.which) {
mouseButton = evt.which;
}
else {
mouseButton = evt.button;
}
// exit from event handler if:
// 1) control should pass to form elements and links
// 2) device is not touch device and left mouse button is not pressed
if (elementControl(evt) || (!evt.touches && mouseButton !== 1)) {
return true;
}
// remove text selection (Chrome, FF, Opera, Safari)
if (window.getSelection) {
window.getSelection().removeAllRanges();
}
// IE8
else if (document.selection && document.selection.type === 'Text') {
try {
document.selection.empty();
}
catch (error) {
// ignore error to as a workaround for bug in IE8
}
}
// define X and Y position (pointer.x and pointer.y are needed in setTableRowColumn() and autoscroll methods) for touchscreen devices
if (evt.touches) {
X = pointer.x = evt.touches[0].clientX;
Y = pointer.y = evt.touches[0].clientY;
}
// or for monitor + mouse devices
else {
X = pointer.x = evt.clientX;
Y = pointer.y = evt.clientY;
}
// set initial threshold position (needed for calculating distance)
threshold.x = X;
threshold.y = Y;
threshold.flag = false;
// remember previous object if defined or set to the clicked object
REDIPS.drag.objOld = objOld = obj || this;
// set reference to the clicked object
REDIPS.drag.obj = obj = this;
// set true or false if clicked element contains "redips-clone" class name (needed for clone element and clone table row)
cloneClass = obj.className.indexOf('redips-clone') > -1;
// if tableSort is set to true (this is default) then set current table group in "tables" array to the array top
// tableTop() should go before definition of "mode" property
if (REDIPS.drag.tableSort) {
tableTop(obj);
}
// if clicked element doesn't belong to the current container then environment should be changed
if (dragContainer !== obj.redips.container) {
dragContainer = obj.redips.container;
initTables();
}
// if user has used a mouse event to increase the dimensions of the table - call calculateCells()
calculateCells();
// set high z-index if object isn't "redips-clone" type (clone object is motionless) for "cell" mode only
if (!cloneClass && mode === 'cell') {
// http://foohack.com/2007/10/top-5-css-mistakes/ (how z-index works)
obj.style.zIndex = 999;
}
// define source cell, current cell and previous cell (needed for event handlers)
// source cell can be TD or TH and that is why findParen() method is called with "or"
REDIPS.drag.td.source = td.source = findParent('TD', obj) || findParent('TH', obj);
REDIPS.drag.td.current = td.current = td.source;
REDIPS.drag.td.previous = td.previous = td.source;
// set current table index, row index and cell index
// at the beginning, DIV element should nicely be sitting in TD
// remember source position (old position is initially the same as source position)
table = tableSource = tableOld = tables.indexOf(findParent('TABLE', td.source));
row = rowSource = rowOld = findParent('TR', td.source).rowIndex;
cell = cellSource = cellOld = td.source.cellIndex;
// set table CSS position (needed for exclusion "scroll offset" if table box has position fixed)
position = getStyle(tables[tableSource], 'position');
// if table doesn't have style position:fixed then table container should be tested
if (position !== 'fixed') {
position = getStyle(tables[tableSource].parentNode, 'position');
}
// define offset of current TD
currentCell = boxOffset(td.current, position);
// define drag mode "cell" or "row"
// mode definition should be after:
// tableTop() - because "obj" is rewritten with table row reference
// initTables() - because "obj" is rewritten with table row reference and row doesn't have defined redips.container property
if (obj.className.indexOf('row') === -1) {
// set "cell" drag mode
REDIPS.drag.mode = mode = 'cell';
// call event.clicked for table content
REDIPS.drag.event.clicked(td.current);
}
else {
// set "row" drag mode
REDIPS.drag.mode = mode = 'row';
// return reference of the current row (do not clone)
REDIPS.drag.obj = obj = rowClone(obj);
// call event.rowClicked()
REDIPS.drag.event.rowClicked(td.current);
}
// if table is disabled, then return from this event handler
if (tables[table].redips.enabled === false) {
return true;
}
// reset "moved" flag (needed for clone object in handlerOnMouseMove) and "cloned" flag
moved = cloned = false;
// activate onmousemove and ontouchmove event handlers on document object
REDIPS.event.add(document, 'mousemove', handlerOnMouseMove);
REDIPS.event.add(document, 'touchmove', handlerOnMouseMove);
// activate onmouseup and ontouchend event handlers on document object
REDIPS.event.add(document, 'mouseup', handlerOnMouseUp);
REDIPS.event.add(document, 'touchend', handlerOnMouseUp);
// get IE (all versions) to allow dragging outside the window (?!)
// http://stackoverflow.com/questions/1685326/responding-to-the-onmousemove-event-outside-of-the-browser-window-in-ie
if (obj.setCapture) {
obj.setCapture();
}
// remember background color if is possible
if (table !== null && row !== null && cell !== null) {
bgStyleOld = getTdStyle(table, row, cell);
}
// define object offset
offset = boxOffset(obj, position);
// calculate offset from the clicked point inside element to the
// top, right, bottom and left side of the element
objMargin = [Y - offset[0], offset[1] - X, offset[2] - Y, X - offset[3]];
// dissable text selection (but not for links and form elements)
// onselectstart is supported by IE browsers, other browsers "understand" return false in onmousedown handler
dragContainer.onselectstart = function (e) {
evt = e || window.event;
if (!elementControl(evt)) {
// this lines are needed for IE8 in case when leftmouse button was clicked and SHIFT key was pressed
// IE8 selected text anyway but document.selection.clear() prevented text selection
if (evt.shiftKey) {
document.selection.clear();
}
return false;
}
};
// disable text selection for non IE browsers
return false;
};
/**
* ondblclick handler event handler.
* This event handler is attached to every DIV element in drag container (please see "enableDrag").
* @param {Event} e Event information.
* @see <a href="#enableDrag">enableDrag</a>
* @see <a href="#handlerOnMouseDown">handlerOnMouseDown</a>
* @private
* @memberOf REDIPS.drag#
*/
handlerOnDblClick = function (e) {
// call custom event handler
REDIPS.drag.event.dblClicked();
};
/**
* Method sets current table group in "tables" array to the array top ("tables" array is sorted).
* The purpose is to enable tables nesting and to improve perfomance. Tables closer to the top of the array will be scanned before other tables in array.
* This method is called from "handlerOnMouseDown" on every DIV element click.
* DIV element belongs to the table and this table group ("ground" table + its nested tables) should go to the array top.
* @param {HTMLElement} obj Clicked DIV element (table of the clicked DIV element will be sorted to the array top).
* @see <a href="#handlerOnMouseDown">handlerOnMouseDown</a>
* @private
* @memberOf REDIPS.drag#
*/
tableTop = function (obj) {
var e, // element
i, // loop variable
group; // tables group
// find table for clicked DIV element
e = findParent('TABLE', obj);
// set tables group
group = e.redips.nestedGroup;
// set highest "redips.sort" parameter to the current table group
for (i = 0; i < tables.length; i++) {
// "ground" table is table with lowest level hierarchy and with its nested tables creates table group
// nested table will be sorted before "ground" table
if (tables[i].redips.nestedGroup === group) {
tables[i].redips.sort = sortIdx * 100 + tables[i].redips.nestedLevel; // sort = sortIdx * 100 + level
}
}
// sort "tables" array according to redips.sort (tables with higher redips.sort parameter will go to the array top)
tables.sort(function (a, b) {
return b.redips.sort - a.redips.sort;
});
// increase sortIdx
sortIdx++;
};
/**
* Methods returns reference to the table row or clones table row.
* If called from handlerOnMouseDown:
* <ul>
* <li>input parameter is DIV class="redips-row"</li>
* <li>method will return reference of the current row</li>
* </ul>
* If called from handlerOnMouseMove:
* <ul>
* <li>input parameter is TR (current row) - previously returned with this function</li>
* <li>method will clone current row and return reference of the cloned row</li>
* </ul>
* If called from moveObject:
* <ul>
* <li>input parameter is TR (row to animate)</li>
* <li>method will clone row and return reference of the cloned row</li>
* </ul>
* @param {HTMLElement} el DIV class="redips-row" or TR (current row)
* @param {String} [rowMode] If set to "animated" then search for last row will not include search for "rowhandler" DIV element.
* @return {HTMLElement} Returns reference of the current row or clone current row and return reference of the cloned row.
* @see <a href="#handlerOnMouseDown">handlerOnMouseDown</a>
* @see <a href="#handlerOnMouseMove">handlerOnMouseMove</a>
* @private
* @memberOf REDIPS.drag#
*/
rowClone = function (el, rowMode) {
var tableMini, // original table is cloned and all rows except picked row are deleted
offset, // offset of source TR
rowObj, // reference to the row object
lastIdx, // last row index in cloned table
emptyRow, // (boolean) flag indicates if dragged row is last row and should be marked as "empty row"
cr, // current row (needed for searc if dragged row is last row)
div, // reference to the <DIV class="redips-drag redips-row"> element
i, j; // loop variables
// 1) rowClone call in onmousedown will return reference of TR element (input parameter is HTMLElement <div class="redips-drag redips-row">)
if (el.nodeName === 'DIV') {
// remember reference to the <DIV class="redips-drag redips-row">
div = el;
// find parent TR element
el = findParent('TR', el);
// create a "property object" in which all custom properties will be saved (it is only one property for now)
if (el.redips === undefined) {
el.redips = {};
}
// save reference to the DIV element as redips.div
// this will mostly be referenced as objOld.redips.div (because objOld in row dragging context is reference to the source row)
el.redips.div = div;
// return reference to the TR element
return el;
}
// 2) rowClone call in onmousemove will clone current row (el.nodeName === 'TR')
else {
// remember source row
rowObj = el;
// if redips object doesn't exist (possible if rowClone() is called from moveObject() method) then create initialize redips object on TR element
if (rowObj.redips === undefined) {
rowObj.redips = {};
}
// find parent table
el = findParent('TABLE', el);
// before cloning, cut out "redips-clone" class name from <div class="redips-drag redips-row redips-clone"> element if needed
if (cloneClass && cloned) {
// set reference to the <div class="redips-drag redips-row redips-clone"> element
div = rowObj.redips.div;
// no more cloning, cut "redips-clone" from class names
div.className = normalize(div.className.replace('redips-clone', ''));
}
// clone whole table
tableMini = el.cloneNode(true);
// return "redips-clone" to the source element
if (cloneClass && cloned) {
div.className = div.className + ' redips-clone';
}
// find last row index in cloned table
lastIdx = tableMini.rows.length - 1;
// if row mode is "animated" then definition of last row in table is simple
if (rowMode === 'animated') {
emptyRow = lastIdx === 0;
}
// else set initially emptyRow to true (it can be set to false in lower loop)
else {
emptyRow = true;
}
// test if dragged row is the last row and delete all rows but current row
// the trick is to find rowhandler in cells except current cell and that's fine for user interface
// if rows are animated, then "rowhandler" cells don't have to exsist and user should take care about marking last row as "empty row"
for (i = lastIdx; i >= 0; i--) {
// if row is not the current row
if (i !== rowObj.rowIndex) {
// search for "rowhandler cell" in table row if row mode is not "animated" (user drags row)
// this lines are skipped in case of animated mode (
if (emptyRow === true && rowMode === undefined) {
// set current row
cr = tableMini.rows[i];
// open loop to go through each cell
for (j = 0; j < cr.cells.length; j++) {
// if table cell contains "redips-rowhandler" class name then dragged row is not the last row in table
if (cr.cells[j].className.indexOf('redips-rowhandler') > -1) {
emptyRow = false;
break;
}
}
}
// delete row (it should go after searching for "redips-rowhandler" class name)
tableMini.deleteRow(i);
}
}
// if row is not cloned then set emptyRow property
// cloned row always leaves original row in the table so emptyRow property should stay as it was before clone operation
if (!cloned) {
// set emptyRow flag to the current row
// * needed in rowDrop() for replacing this row with dropped row
// * needed in setTableRowColumn() to disable dropping DIV elements to the empty row
rowObj.redips.emptyRow = emptyRow;
}
// create a "property object" in which all custom properties will be saved
tableMini.redips = {};
// set reference to the redips.container (needed if moveObject() moves elements in other container)
tableMini.redips.container = el.redips.container;
// save source row reference (needed for source row deletion in rowDrop method)
tableMini.redips.sourceRow = rowObj;
// set form values in cloned row (to prevent reset values of form elements)
formElements(rowObj, tableMini.rows[0]);
// copy custom properties to all child DIV elements and set onmousedown/ondblclick event handlers
copyProperties(rowObj, tableMini.rows[0]);
// append cloned mini table to the DIV id="redips_clone"
document.getElementById('redips_clone').appendChild(tableMini);
// include scroll position in offset
offset = boxOffset(rowObj, 'fixed');
// set position and position type
tableMini.style.position = 'fixed';
tableMini.style.top = offset[0] + 'px';
tableMini.style.left = offset[3] + 'px';
// define width of mini table
tableMini.style.width = (offset[1] - offset[3]) + 'px';
// return reference of mini table
return tableMini;
}
};
/**
* Method drops table row to the target row and calls user event handlers. Source row is deleted and cloned row is inserted at the new position.
* Method takes care about the last row in the table only if user drags element. In case of moving rows with moveObject(), control
* and logic for last row is turned off. This method is called from handlerOnMouseUp() and animation().
* @param {Integer} tableIdx Table index.
* @param {Integer} rowIdx Row index.
* @param {HTMLElement} [tableMini] Reference to the mini table (table that contains only one row). This is actually clone of source row.
* @see <a href="#rowClone">rowClone</a>
* @private
* @memberOf REDIPS.drag#
*/
rowDrop = function (tableIdx, rowIdx, tableMini) {
// local variables
var animated = false, // (boolean) flag shows if row is animated or dragged by user
drop, // (boolean) if false then dropping row will be canceled
trMini, // reference to the TR in mini table
source = {}, // object contains: source table reference, source row reference, source row index and source table section (parent of row)
target = {}, // object contains: target table reference, target row reference and target table section (parent of row)
deleteTableRow; // delete row (private method)
// delete table row - input paremeter is row reference (private method)
deleteTableRow = function (el) {
var tbl;
// if row doesn't have custom "redips" property or is not marked as empty, then it can be deleted
if (el.redips === undefined || !el.redips.emptyRow) {
tbl = findParent('TABLE', el);
tbl.deleteRow(el.rowIndex);
}
// else, row is marked as "empty" and it will be only colored (not deleted)
// content of table cells will be deleted and background color will be set to default color
else {
rowOpacity(el, 'empty', REDIPS.drag.style.rowEmptyColor);
}
};
// if tableMini is not defined, then rowDrop() is called from handlerOnMouseUp() and set reference to the currently dragged row - mini table
if (tableMini === undefined) {
tableMini = obj;
}
// otherwise, rowDrop() is called from animation() (because third input parameter is set)
// in that case set animated flag to true to turn off "last row" logic
else {
animated = true;
}
// define source data: row, row index, table and table section (needed for "switch" rowDropMode)
source.row = tableMini.redips.sourceRow;
source.rowIndex = source.row.rowIndex;
source.table = findParent('TABLE', source.row);
source.tableSection = source.row.parentNode;
// define target data: row, row index, table and table section
target.table = tables[tableIdx];
// if row index is out of bounds, then set max row index (row will be appended to the table bottom)
if (rowIdx > target.table.rows.length - 1) {
rowIdx = target.table.rows.length - 1;
}
target.row = target.table.rows[rowIdx];
target.rowIndex = rowIdx;
target.tableSection = target.row.parentNode;
// set reference to the TR in mini table (mini table has only one row - first row)
trMini = tableMini.getElementsByTagName('tr')[0];
// destroy mini table (node still exists in memory)
tableMini.remove();
// call event.rowDroppedBefore() - this handler can return "false" value
drop = REDIPS.drag.event.rowDroppedBefore(source.table, source.rowIndex);
// if handler returned false then row dropping will be canceled
if (drop !== false) {
// row is moved to the "trash"
if (!animated && td.target.className.indexOf(REDIPS.drag.trash.className) > -1) {
// test if cloned row is directly dropped to the "redips-trash" cell (call rowDeleted event handler)
if (cloned) {
REDIPS.drag.event.rowDeleted();
}
// row is not cloned
else {
// if trash.questionRow is set then user should should confirm delete row action
if (REDIPS.drag.trash.questionRow) {
// ask user if is sure
if (confirm(REDIPS.drag.trash.questionRow)) {
// delete source row and call rowDeleted event handler
deleteTableRow(source.row);
REDIPS.drag.event.rowDeleted();
}
// user is not sure - undelete
else {
// delete emptyRow property from source row because emptyRow will be set on next move
// otherwise row would be overwritten and that's no good
delete objOld.redips.emptyRow;
// just call undeleted handler
REDIPS.drag.event.rowUndeleted();
}
}
// trask_ask_row is set to "false" - source row can be deleted
else {
// delete source row and call rowDeleted event handler
deleteTableRow(source.row);
REDIPS.drag.event.rowDeleted();
}
}
}
// normal row move
else {
// if row is not dropped to the last row position
if (target.rowIndex < target.table.rows.length) {
// if source and target rows are from the same table
if (table === tableSource) {
// row is dropped above source position from the same table
if (source.rowIndex > target.rowIndex) {
target.tableSection.insertBefore(trMini, target.row);
}
// row is dropped to the lower position in the same table
else {
target.tableSection.insertBefore(trMini, target.row.nextSibling);
}
}
// row is dropped to other table and will be placed after highlighted row
else if (REDIPS.drag.rowDropMode === 'after') {
target.tableSection.insertBefore(trMini, target.row.nextSibling);
}
// row is dropped to other table and will be placed before highlighted row
// this code will be executed in case of "before", "switch" and "overwrite" row drop mode (when dropping row to other table)
else {
target.tableSection.insertBefore(trMini, target.row);
}
}
// row is dropped to the last row position
// it's possible to set target row index greater then number of rows - in this case row will be appended to the table end
else {
// row should be appended
target.tableSection.appendChild(trMini);
// set reference to the upper row
// after row is appended, upper row should be tested if contains "emptyRow" set to true
// this could happen in case when row is moved to the table with only one empty row
target.row = target.table.rows[0];
}
// if table contains only "empty" row then this row should be deleted after inserting or appending to such table
if (target.row && target.row.redips && target.row.redips.emptyRow) {
target.table.deleteRow(target.row.rowIndex);
}
// in case of "overwrite", delete target row
else if (REDIPS.drag.rowDropMode === 'overwrite') {
deleteTableRow(target.row);
}
// insert target row to source location and delete source row (if row is not cloned)
else if (REDIPS.drag.rowDropMode === 'switch' && !cloned) {
source.tableSection.insertBefore(target.row, source.row);
// delete emptyRow flag to the source row (needed in case when switching last row from table2 to table1)
if (source.row.redips !== undefined) {
delete source.row.redips.emptyRow;
}
}
// delete source row if called from animation() or row is not cloned
if (animated || !cloned) {
deleteTableRow(source.row);
}
// delete emptyRow property from inserted/appended row because emptyRow will be set on next move
// copyProperties() in rowClone() copied emptyRow property to the row in tableMini
// otherwise row will be overwritten and that is not good
delete trMini.redips.emptyRow;
// call rowDropped event handler if rowDrop() was not called from animation()
if (!animated) {
REDIPS.drag.event.rowDropped(trMini, source.table, source.rowIndex);
}
} // end normal row move
// if row contains TABLE(S) then recall initTables() to properly initialize tables array and set custom properties
// no matter if row was moved or deleted
if (trMini.getElementsByTagName('table').length > 0) {
initTables();
}
}
// event.rowDroppedBefore() returned "false" (it's up to user to return source row opacity to its original state)
else {
// rowOpacity(objOld, 100);
}
};
/**