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1849 lines (1605 loc) · 68.7 KB
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/**
* gridstack.js 1.0.0-dev
* http://troolee.github.io/gridstack.js/
* (c) 2014-2018 Pavel Reznikov, Dylan Weiss
* gridstack.js may be freely distributed under the MIT license.
* @preserve
*/
(function(factory) {
if (typeof define === 'function' && define.amd) {
define(['jquery', 'lodash'], factory);
} else if (typeof exports !== 'undefined') {
try { jQuery = require('jquery'); } catch (e) {}
try { _ = require('lodash'); } catch (e) {}
factory(jQuery, _);
} else {
factory(jQuery, _);
}
})(function($, _) {
var scope = window;
var obsolete = function(f, oldName, newName) {
var wrapper = function() {
console.warn('gridstack.js: Function `' + oldName + '` is deprecated as of v0.2.5 and has been replaced ' +
'with `' + newName + '`. It will be **completely** removed in v1.0.');
return f.apply(this, arguments);
};
wrapper.prototype = f.prototype;
return wrapper;
};
var obsoleteOpts = function(oldName, newName) {
console.warn('gridstack.js: Option `' + oldName + '` is deprecated as of v0.2.5 and has been replaced with `' +
newName + '`. It will be **completely** removed in v1.0.');
};
var Utils = {
isIntercepted: function(a, b) {
return !(a.x + a.width <= b.x || b.x + b.width <= a.x || a.y + a.height <= b.y || b.y + b.height <= a.y);
},
sort: function(nodes, dir, width) {
width = width || _.chain(nodes).map(function(node) { return node.x + node.width; }).max().value();
dir = dir != -1 ? 1 : -1;
return _.sortBy(nodes, [function(n) { return dir * (n.x + n.y * width); }]);
},
createStylesheet: function(id) {
var style = document.createElement('style');
style.setAttribute('type', 'text/css');
style.setAttribute('data-gs-style-id', id);
if (style.styleSheet) {
style.styleSheet.cssText = '';
} else {
style.appendChild(document.createTextNode(''));
}
document.getElementsByTagName('head')[0].appendChild(style);
return style.sheet;
},
removeStylesheet: function(id) {
$('STYLE[data-gs-style-id=' + id + ']').remove();
},
insertCSSRule: function(sheet, selector, rules, index) {
if (typeof sheet.insertRule === 'function') {
sheet.insertRule(selector + '{' + rules + '}', index);
} else if (typeof sheet.addRule === 'function') {
sheet.addRule(selector, rules, index);
}
},
toBool: function(v) {
if (typeof v == 'boolean') {
return v;
}
if (typeof v == 'string') {
v = v.toLowerCase();
return !(v === '' || v == 'no' || v == 'false' || v == '0');
}
return Boolean(v);
},
_collisionNodeCheck: function(n) {
return n != this.node && Utils.isIntercepted(n, this.nn);
},
_didCollide: function(bn) {
return Utils.isIntercepted({x: this.n.x, y: this.newY, width: this.n.width, height: this.n.height}, bn);
},
_isAddNodeIntercepted: function(n) {
return Utils.isIntercepted({x: this.x, y: this.y, width: this.node.width, height: this.node.height}, n);
},
parseHeight: function(val) {
var height = val;
var heightUnit = 'px';
if (height && _.isString(height)) {
var match = height.match(/^(-[0-9]+\.[0-9]+|[0-9]*\.[0-9]+|-[0-9]+|[0-9]+)(px|em|rem|vh|vw)?$/);
if (!match) {
throw new Error('Invalid height');
}
heightUnit = match[2] || 'px';
height = parseFloat(match[1]);
}
return {height: height, unit: heightUnit};
},
removePositioningStyles: function(el) {
var style = el[0].style;
if (style.position) {
style.removeProperty('position');
}
if (style.left) {
style.removeProperty('left');
}
if (style.top) {
style.removeProperty('top');
}
if (style.width) {
style.removeProperty('width');
}
if (style.height) {
style.removeProperty('height');
}
},
getScrollParent: function(el) {
var returnEl;
if (el == null) {
returnEl = null;
} else if (el.scrollHeight > el.clientHeight) {
returnEl = el;
} else {
returnEl = Utils.getScrollParent(el.parentNode);
}
return returnEl;
},
updateScrollPosition: function(el, ui, distance) {
// is widget in view?
var rect = el.getBoundingClientRect();
var innerHeightOrClientHeight = (window.innerHeight || document.documentElement.clientHeight);
if (rect.top < 0 ||
rect.bottom > innerHeightOrClientHeight
) {
// set scrollTop of first parent that scrolls
// if parent is larger than el, set as low as possible
// to get entire widget on screen
var offsetDiffDown = rect.bottom - innerHeightOrClientHeight;
var offsetDiffUp = rect.top;
var scrollEl = Utils.getScrollParent(el);
if (scrollEl != null) {
var prevScroll = scrollEl.scrollTop;
if (rect.top < 0 && distance < 0) {
// moving up
if (el.offsetHeight > innerHeightOrClientHeight) {
scrollEl.scrollTop += distance;
} else {
scrollEl.scrollTop += Math.abs(offsetDiffUp) > Math.abs(distance) ? distance : offsetDiffUp;
}
} else if (distance > 0) {
// moving down
if (el.offsetHeight > innerHeightOrClientHeight) {
scrollEl.scrollTop += distance;
} else {
scrollEl.scrollTop += offsetDiffDown > distance ? distance : offsetDiffDown;
}
}
// move widget y by amount scrolled
ui.position.top += scrollEl.scrollTop - prevScroll;
}
}
}
};
// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
Utils.is_intercepted = obsolete(Utils.isIntercepted, 'is_intercepted', 'isIntercepted');
Utils.create_stylesheet = obsolete(Utils.createStylesheet, 'create_stylesheet', 'createStylesheet');
Utils.remove_stylesheet = obsolete(Utils.removeStylesheet, 'remove_stylesheet', 'removeStylesheet');
Utils.insert_css_rule = obsolete(Utils.insertCSSRule, 'insert_css_rule', 'insertCSSRule');
// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
/**
* @class GridStackDragDropPlugin
* Base class for drag'n'drop plugin.
*/
function GridStackDragDropPlugin(grid) {
this.grid = grid;
}
GridStackDragDropPlugin.registeredPlugins = [];
GridStackDragDropPlugin.registerPlugin = function(pluginClass) {
GridStackDragDropPlugin.registeredPlugins.push(pluginClass);
};
GridStackDragDropPlugin.prototype.resizable = function(el, opts) {
return this;
};
GridStackDragDropPlugin.prototype.draggable = function(el, opts) {
return this;
};
GridStackDragDropPlugin.prototype.droppable = function(el, opts) {
return this;
};
GridStackDragDropPlugin.prototype.isDroppable = function(el) {
return false;
};
GridStackDragDropPlugin.prototype.on = function(el, eventName, callback) {
return this;
};
var idSeq = 0;
var GridStackEngine = function(width, onchange, floatMode, height, items) {
this.width = width;
this.float = floatMode || false;
this.height = height || 0;
this.nodes = items || [];
this.onchange = onchange || function() {};
this._updateCounter = 0;
this._float = this.float;
this._addedNodes = [];
this._removedNodes = [];
};
GridStackEngine.prototype.batchUpdate = function() {
this._updateCounter = 1;
this.float = true;
};
GridStackEngine.prototype.commit = function() {
if (this._updateCounter !== 0) {
this._updateCounter = 0;
this.float = this._float;
this._packNodes();
this._notify();
}
};
// For Meteor support: https://github.com/troolee/gridstack.js/pull/272
GridStackEngine.prototype.getNodeDataByDOMEl = function(el) {
return _.find(this.nodes, function(n) { return el.get(0) === n.el.get(0); });
};
GridStackEngine.prototype._fixCollisions = function(node) {
var self = this;
this._sortNodes(-1);
var nn = node;
var hasLocked = Boolean(_.find(this.nodes, function(n) { return n.locked; }));
if (!this.float && !hasLocked) {
nn = {x: 0, y: node.y, width: this.width, height: node.height};
}
while (true) {
var collisionNode = _.find(this.nodes, _.bind(Utils._collisionNodeCheck, {node: node, nn: nn}));
if (typeof collisionNode == 'undefined') {
return;
}
this.moveNode(collisionNode, collisionNode.x, node.y + node.height,
collisionNode.width, collisionNode.height, true);
}
};
GridStackEngine.prototype.isAreaEmpty = function(x, y, width, height) {
var nn = {x: x || 0, y: y || 0, width: width || 1, height: height || 1};
var collisionNode = _.find(this.nodes, _.bind(function(n) {
return Utils.isIntercepted(n, nn);
}, this));
return collisionNode === null || typeof collisionNode === 'undefined';
};
GridStackEngine.prototype._sortNodes = function(dir) {
this.nodes = Utils.sort(this.nodes, dir, this.width);
};
GridStackEngine.prototype._packNodes = function() {
this._sortNodes();
if (this.float) {
_.each(this.nodes, _.bind(function(n, i) {
if (n._updating || typeof n._origY == 'undefined' || n.y == n._origY) {
return;
}
var newY = n.y;
while (newY >= n._origY) {
var collisionNode = _.chain(this.nodes)
.take(i)
.find(_.bind(Utils._didCollide, {n: n, newY: newY}))
.value();
if (!collisionNode) {
n._dirty = true;
n.y = newY;
}
--newY;
}
}, this));
} else {
_.each(this.nodes, _.bind(function(n, i) {
if (n.locked) {
return;
}
while (n.y > 0) {
var newY = n.y - 1;
var canBeMoved = i === 0;
if (i > 0) {
var collisionNode = _.chain(this.nodes)
.take(i)
.find(_.bind(Utils._didCollide, {n: n, newY: newY}))
.value();
canBeMoved = typeof collisionNode == 'undefined';
}
if (!canBeMoved) {
break;
}
n._dirty = n.y != newY;
n.y = newY;
}
}, this));
}
};
GridStackEngine.prototype._prepareNode = function(node, resizing) {
node = _.defaults(node || {}, {width: 1, height: 1, x: 0, y: 0});
node.x = parseInt('' + node.x);
node.y = parseInt('' + node.y);
node.width = parseInt('' + node.width);
node.height = parseInt('' + node.height);
node.autoPosition = node.autoPosition || false;
node.noResize = node.noResize || false;
node.noMove = node.noMove || false;
if (node.width > this.width) {
node.width = this.width;
} else if (node.width < 1) {
node.width = 1;
}
if (node.height < 1) {
node.height = 1;
}
if (node.x < 0) {
node.x = 0;
}
if (node.x + node.width > this.width) {
if (resizing) {
node.width = this.width - node.x;
} else {
node.x = this.width - node.width;
}
}
if (node.y < 0) {
node.y = 0;
}
return node;
};
GridStackEngine.prototype._notify = function() {
var args = Array.prototype.slice.call(arguments, 0);
args[0] = typeof args[0] === 'undefined' ? [] : [args[0]];
args[1] = typeof args[1] === 'undefined' ? true : args[1];
if (this._updateCounter) {
return;
}
var deletedNodes = args[0].concat(this.getDirtyNodes());
this.onchange(deletedNodes, args[1]);
};
GridStackEngine.prototype.cleanNodes = function() {
if (this._updateCounter) {
return;
}
_.each(this.nodes, function(n) {n._dirty = false; });
};
GridStackEngine.prototype.getDirtyNodes = function() {
return _.filter(this.nodes, function(n) { return n._dirty; });
};
GridStackEngine.prototype.addNode = function(node, triggerAddEvent) {
node = this._prepareNode(node);
if (typeof node.maxWidth != 'undefined') { node.width = Math.min(node.width, node.maxWidth); }
if (typeof node.maxHeight != 'undefined') { node.height = Math.min(node.height, node.maxHeight); }
if (typeof node.minWidth != 'undefined') { node.width = Math.max(node.width, node.minWidth); }
if (typeof node.minHeight != 'undefined') { node.height = Math.max(node.height, node.minHeight); }
node._id = ++idSeq;
node._dirty = true;
if (node.autoPosition) {
this._sortNodes();
for (var i = 0;; ++i) {
var x = i % this.width;
var y = Math.floor(i / this.width);
if (x + node.width > this.width) {
continue;
}
if (!_.find(this.nodes, _.bind(Utils._isAddNodeIntercepted, {x: x, y: y, node: node}))) {
node.x = x;
node.y = y;
break;
}
}
}
this.nodes.push(node);
if (typeof triggerAddEvent != 'undefined' && triggerAddEvent) {
this._addedNodes.push(_.clone(node));
}
this._fixCollisions(node);
this._packNodes();
this._notify();
return node;
};
GridStackEngine.prototype.removeNode = function(node, detachNode) {
detachNode = typeof detachNode === 'undefined' ? true : detachNode;
this._removedNodes.push(_.clone(node));
node._id = null;
this.nodes = _.without(this.nodes, node);
this._packNodes();
this._notify(node, detachNode);
};
GridStackEngine.prototype.canMoveNode = function(node, x, y, width, height) {
if (!this.isNodeChangedPosition(node, x, y, width, height)) {
return false;
}
var hasLocked = Boolean(_.find(this.nodes, function(n) { return n.locked; }));
if (!this.height && !hasLocked) {
return true;
}
var clonedNode;
var clone = new GridStackEngine(
this.width,
null,
this.float,
0,
_.map(this.nodes, function(n) {
if (n == node) {
clonedNode = $.extend({}, n);
return clonedNode;
}
return $.extend({}, n);
}));
if (typeof clonedNode === 'undefined') {
return true;
}
clone.moveNode(clonedNode, x, y, width, height);
var res = true;
if (hasLocked) {
res &= !Boolean(_.find(clone.nodes, function(n) {
return n != clonedNode && Boolean(n.locked) && Boolean(n._dirty);
}));
}
if (this.height) {
res &= clone.getGridHeight() <= this.height;
}
return res;
};
GridStackEngine.prototype.canBePlacedWithRespectToHeight = function(node) {
if (!this.height) {
return true;
}
var clone = new GridStackEngine(
this.width,
null,
this.float,
0,
_.map(this.nodes, function(n) { return $.extend({}, n); }));
clone.addNode(node);
return clone.getGridHeight() <= this.height;
};
GridStackEngine.prototype.isNodeChangedPosition = function(node, x, y, width, height) {
if (typeof x != 'number') { x = node.x; }
if (typeof y != 'number') { y = node.y; }
if (typeof width != 'number') { width = node.width; }
if (typeof height != 'number') { height = node.height; }
if (typeof node.maxWidth != 'undefined') { width = Math.min(width, node.maxWidth); }
if (typeof node.maxHeight != 'undefined') { height = Math.min(height, node.maxHeight); }
if (typeof node.minWidth != 'undefined') { width = Math.max(width, node.minWidth); }
if (typeof node.minHeight != 'undefined') { height = Math.max(height, node.minHeight); }
if (node.x == x && node.y == y && node.width == width && node.height == height) {
return false;
}
return true;
};
GridStackEngine.prototype.moveNode = function(node, x, y, width, height, noPack) {
if (!this.isNodeChangedPosition(node, x, y, width, height)) {
return node;
}
if (typeof x != 'number') { x = node.x; }
if (typeof y != 'number') { y = node.y; }
if (typeof width != 'number') { width = node.width; }
if (typeof height != 'number') { height = node.height; }
if (typeof node.maxWidth != 'undefined') { width = Math.min(width, node.maxWidth); }
if (typeof node.maxHeight != 'undefined') { height = Math.min(height, node.maxHeight); }
if (typeof node.minWidth != 'undefined') { width = Math.max(width, node.minWidth); }
if (typeof node.minHeight != 'undefined') { height = Math.max(height, node.minHeight); }
if (node.x == x && node.y == y && node.width == width && node.height == height) {
return node;
}
var resizing = node.width != width;
node._dirty = true;
node.x = x;
node.y = y;
node.width = width;
node.height = height;
node.lastTriedX = x;
node.lastTriedY = y;
node.lastTriedWidth = width;
node.lastTriedHeight = height;
node = this._prepareNode(node, resizing);
this._fixCollisions(node);
if (!noPack) {
this._packNodes();
this._notify();
}
return node;
};
GridStackEngine.prototype.getGridHeight = function() {
return _.reduce(this.nodes, function(memo, n) { return Math.max(memo, n.y + n.height); }, 0);
};
GridStackEngine.prototype.beginUpdate = function(node) {
_.each(this.nodes, function(n) {
n._origY = n.y;
});
node._updating = true;
};
GridStackEngine.prototype.endUpdate = function() {
_.each(this.nodes, function(n) {
n._origY = n.y;
});
var n = _.find(this.nodes, function(n) { return n._updating; });
if (n) {
n._updating = false;
}
};
var GridStack = function(el, opts) {
var self = this;
var oneColumnMode, isAutoCellHeight;
opts = opts || {};
this.container = $(el);
// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
if (typeof opts.handle_class !== 'undefined') {
opts.handleClass = opts.handle_class;
obsoleteOpts('handle_class', 'handleClass');
}
if (typeof opts.item_class !== 'undefined') {
opts.itemClass = opts.item_class;
obsoleteOpts('item_class', 'itemClass');
}
if (typeof opts.placeholder_class !== 'undefined') {
opts.placeholderClass = opts.placeholder_class;
obsoleteOpts('placeholder_class', 'placeholderClass');
}
if (typeof opts.placeholder_text !== 'undefined') {
opts.placeholderText = opts.placeholder_text;
obsoleteOpts('placeholder_text', 'placeholderText');
}
if (typeof opts.cell_height !== 'undefined') {
opts.cellHeight = opts.cell_height;
obsoleteOpts('cell_height', 'cellHeight');
}
if (typeof opts.vertical_margin !== 'undefined') {
opts.verticalMargin = opts.vertical_margin;
obsoleteOpts('vertical_margin', 'verticalMargin');
}
if (typeof opts.min_width !== 'undefined') {
opts.minWidth = opts.min_width;
obsoleteOpts('min_width', 'minWidth');
}
if (typeof opts.static_grid !== 'undefined') {
opts.staticGrid = opts.static_grid;
obsoleteOpts('static_grid', 'staticGrid');
}
if (typeof opts.is_nested !== 'undefined') {
opts.isNested = opts.is_nested;
obsoleteOpts('is_nested', 'isNested');
}
if (typeof opts.always_show_resize_handle !== 'undefined') {
opts.alwaysShowResizeHandle = opts.always_show_resize_handle;
obsoleteOpts('always_show_resize_handle', 'alwaysShowResizeHandle');
}
// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
opts.itemClass = opts.itemClass || 'grid-stack-item';
var isNested = this.container.closest('.' + opts.itemClass).length > 0;
this.opts = _.defaults(opts || {}, {
width: parseInt(this.container.attr('data-gs-width')) || 12,
height: parseInt(this.container.attr('data-gs-height')) || 0,
itemClass: 'grid-stack-item',
placeholderClass: 'grid-stack-placeholder',
placeholderText: '',
handle: '.grid-stack-item-content',
handleClass: null,
cellHeight: 60,
verticalMargin: 20,
auto: true,
minWidth: 768,
float: false,
staticGrid: false,
_class: 'grid-stack-instance-' + (Math.random() * 10000).toFixed(0),
animate: Boolean(this.container.attr('data-gs-animate')) || false,
alwaysShowResizeHandle: opts.alwaysShowResizeHandle || false,
resizable: _.defaults(opts.resizable || {}, {
autoHide: !(opts.alwaysShowResizeHandle || false),
handles: 'se'
}),
draggable: _.defaults(opts.draggable || {}, {
handle: (opts.handleClass ? '.' + opts.handleClass : (opts.handle ? opts.handle : '')) ||
'.grid-stack-item-content',
scroll: false,
appendTo: 'body'
}),
disableDrag: opts.disableDrag || false,
disableResize: opts.disableResize || false,
rtl: 'auto',
removable: false,
removableOptions: _.defaults(opts.removableOptions || {}, {
accept: '.' + opts.itemClass
}),
removeTimeout: 2000,
verticalMarginUnit: 'px',
cellHeightUnit: 'px',
disableOneColumnMode: opts.disableOneColumnMode || false,
oneColumnModeClass: opts.oneColumnModeClass || 'grid-stack-one-column-mode',
ddPlugin: null
});
if (this.opts.ddPlugin === false) {
this.opts.ddPlugin = GridStackDragDropPlugin;
} else if (this.opts.ddPlugin === null) {
this.opts.ddPlugin = _.first(GridStackDragDropPlugin.registeredPlugins) || GridStackDragDropPlugin;
}
this.dd = new this.opts.ddPlugin(this);
if (this.opts.rtl === 'auto') {
this.opts.rtl = this.container.css('direction') === 'rtl';
}
if (this.opts.rtl) {
this.container.addClass('grid-stack-rtl');
}
this.opts.isNested = isNested;
isAutoCellHeight = this.opts.cellHeight === 'auto';
if (isAutoCellHeight) {
self.cellHeight(self.cellWidth(), true);
} else {
this.cellHeight(this.opts.cellHeight, true);
}
this.verticalMargin(this.opts.verticalMargin, true);
this.container.addClass(this.opts._class);
this._setStaticClass();
if (isNested) {
this.container.addClass('grid-stack-nested');
}
this._initStyles();
this.grid = new GridStackEngine(this.opts.width, function(nodes, detachNode) {
detachNode = typeof detachNode === 'undefined' ? true : detachNode;
var maxHeight = 0;
_.each(this.nodes, function(n) {
maxHeight = Math.max(maxHeight, n.y + n.height);
});
_.each(nodes, function(n) {
if (detachNode && n._id === null) {
if (n.el) {
n.el.remove();
}
} else {
n.el
.attr('data-gs-x', n.x)
.attr('data-gs-y', n.y)
.attr('data-gs-width', n.width)
.attr('data-gs-height', n.height);
}
});
self._updateStyles(maxHeight + 10);
}, this.opts.float, this.opts.height);
if (this.opts.auto) {
var elements = [];
var _this = this;
this.container.children('.' + this.opts.itemClass + ':not(.' + this.opts.placeholderClass + ')')
.each(function(index, el) {
el = $(el);
elements.push({
el: el,
i: parseInt(el.attr('data-gs-x')) + parseInt(el.attr('data-gs-y')) * _this.opts.width
});
});
_.chain(elements).sortBy(function(x) { return x.i; }).each(function(i) {
self._prepareElement(i.el);
}).value();
}
this.setAnimation(this.opts.animate);
this.placeholder = $(
'<div class="' + this.opts.placeholderClass + ' ' + this.opts.itemClass + '">' +
'<div class="placeholder-content">' + this.opts.placeholderText + '</div></div>').hide();
this._updateContainerHeight();
this._updateHeightsOnResize = _.throttle(function() {
self.cellHeight(self.cellWidth(), false);
}, 100);
this.onResizeHandler = function() {
if (isAutoCellHeight) {
self._updateHeightsOnResize();
}
if (self._isOneColumnMode() && !self.opts.disableOneColumnMode) {
if (oneColumnMode) {
return;
}
self.container.addClass(self.opts.oneColumnModeClass);
oneColumnMode = true;
self.grid._sortNodes();
_.each(self.grid.nodes, function(node) {
self.container.append(node.el);
if (self.opts.staticGrid) {
return;
}
self.dd.draggable(node.el, 'disable');
self.dd.resizable(node.el, 'disable');
node.el.trigger('resize');
});
} else {
if (!oneColumnMode) {
return;
}
self.container.removeClass(self.opts.oneColumnModeClass);
oneColumnMode = false;
if (self.opts.staticGrid) {
return;
}
_.each(self.grid.nodes, function(node) {
if (!node.noMove && !self.opts.disableDrag) {
self.dd.draggable(node.el, 'enable');
}
if (!node.noResize && !self.opts.disableResize) {
self.dd.resizable(node.el, 'enable');
}
node.el.trigger('resize');
});
}
};
$(window).resize(this.onResizeHandler);
this.onResizeHandler();
if (!self.opts.staticGrid && typeof self.opts.removable === 'string') {
var trashZone = $(self.opts.removable);
if (!this.dd.isDroppable(trashZone)) {
this.dd.droppable(trashZone, self.opts.removableOptions);
}
this.dd
.on(trashZone, 'dropover', function(event, ui) {
var el = $(ui.draggable);
var node = el.data('_gridstack_node');
if (node._grid !== self) {
return;
}
el.data('inTrashZone', true);
self._setupRemovingTimeout(el);
})
.on(trashZone, 'dropout', function(event, ui) {
var el = $(ui.draggable);
var node = el.data('_gridstack_node');
if (node._grid !== self) {
return;
}
el.data('inTrashZone', false);
self._clearRemovingTimeout(el);
});
}
if (!self.opts.staticGrid && self.opts.acceptWidgets) {
var draggingElement = null;
var onDrag = function(event, ui) {
var el = draggingElement;
var node = el.data('_gridstack_node');
var pos = self.getCellFromPixel({left: event.pageX, top: event.pageY}, true);
var x = Math.max(0, pos.x);
var y = Math.max(0, pos.y);
if (!node._added) {
node._added = true;
node.el = el;
node.autoPosition = true;
node.x = x;
node.y = y;
self.grid.cleanNodes();
self.grid.beginUpdate(node);
self.grid.addNode(node);
self.container.append(self.placeholder);
self.placeholder
.attr('data-gs-x', node.x)
.attr('data-gs-y', node.y)
.attr('data-gs-width', node.width)
.attr('data-gs-height', node.height)
.show();
node.el = self.placeholder;
node._beforeDragX = node.x;
node._beforeDragY = node.y;
self._updateContainerHeight();
}
if (!self.grid.canMoveNode(node, x, y)) {
return;
}
self.grid.moveNode(node, x, y);
self._updateContainerHeight();
};
this.dd
.droppable(self.container, {
accept: function(el) {
el = $(el);
var node = el.data('_gridstack_node');
if (node && node._grid === self) {
return false;
}
return el.is(self.opts.acceptWidgets === true ? '.grid-stack-item' : self.opts.acceptWidgets);
}
})
.on(self.container, 'dropover', function(event, ui) {
var offset = self.container.offset();
var el = $(ui.draggable);
var cellWidth = self.cellWidth();
var cellHeight = self.cellHeight();
var origNode = el.data('_gridstack_node');
var width = origNode ? origNode.width : (Math.ceil(el.outerWidth() / cellWidth));
var height = origNode ? origNode.height : (Math.ceil(el.outerHeight() / cellHeight));
draggingElement = el;
var node = self.grid._prepareNode({width: width, height: height, _added: false, _temporary: true});
el.data('_gridstack_node', node);
el.data('_gridstack_node_orig', origNode);
el.on('drag', onDrag);
})
.on(self.container, 'dropout', function(event, ui) {
var el = $(ui.draggable);
if (!el.data('_gridstack_node')) {
return;
}
el.unbind('drag', onDrag);
var node = el.data('_gridstack_node');
node.el = null;
self.grid.removeNode(node);
self.placeholder.detach();
self._updateContainerHeight();
el.data('_gridstack_node', el.data('_gridstack_node_orig'));
})
.on(self.container, 'drop', function(event, ui) {
self.placeholder.detach();
var node = $(ui.draggable).data('_gridstack_node');
node._grid = self;
var el = $(ui.draggable).clone(false);
el.data('_gridstack_node', node);
var originalNode = $(ui.draggable).data('_gridstack_node_orig');
if (typeof originalNode !== 'undefined' && typeof originalNode._grid !== 'undefined') {
originalNode._grid._triggerRemoveEvent();
}
$(ui.helper).remove();
node.el = el;
self.placeholder.hide();
Utils.removePositioningStyles(el);
el.find('div.ui-resizable-handle').remove();
el
.attr('data-gs-x', node.x)
.attr('data-gs-y', node.y)
.attr('data-gs-width', node.width)
.attr('data-gs-height', node.height)
.addClass(self.opts.itemClass)
.enableSelection()
.removeData('draggable')
.removeClass('ui-draggable ui-draggable-dragging ui-draggable-disabled')
.unbind('drag', onDrag);
self.container.append(el);
self._prepareElementsByNode(el, node);
self._updateContainerHeight();
self.grid._addedNodes.push(node);
self._triggerAddEvent();
self._triggerChangeEvent();
self.grid.endUpdate();
$(ui.draggable).unbind('drag', onDrag);
$(ui.draggable).removeData('_gridstack_node');
$(ui.draggable).removeData('_gridstack_node_orig');
self.container.trigger('dropped', [originalNode, node]);
});
}
};
GridStack.prototype._triggerChangeEvent = function(forceTrigger) {
var elements = this.grid.getDirtyNodes();
var hasChanges = false;
var eventParams = [];
if (elements && elements.length) {
eventParams.push(elements);
hasChanges = true;
}
if (hasChanges || forceTrigger === true) {
this.container.trigger('change', eventParams);
}
};
GridStack.prototype._triggerAddEvent = function() {
if (this.grid._addedNodes && this.grid._addedNodes.length > 0) {
this.container.trigger('added', [_.map(this.grid._addedNodes, _.clone)]);
this.grid._addedNodes = [];
}
};
GridStack.prototype._triggerRemoveEvent = function() {
if (this.grid._removedNodes && this.grid._removedNodes.length > 0) {
this.container.trigger('removed', [_.map(this.grid._removedNodes, _.clone)]);
this.grid._removedNodes = [];
}
};