162 lines
24 KiB
JavaScript
162 lines
24 KiB
JavaScript
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(function (factory) {
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if (typeof define === 'function' && define.amd) { define(['jquery', 'lodash'], factory); }
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else { factory(jQuery, _); }
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})(function ($, _) {
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var scope = window; var Utils = {
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is_intercepted: 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); }); }, create_stylesheet: function (id) {
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var style = document.createElement("style"); style.setAttribute("type", "text/css"); style.setAttribute("data-gs-id", id); if (style.styleSheet) { style.styleSheet.cssText = ""; }
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else { style.appendChild(document.createTextNode("")); }
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document.getElementsByTagName('head')[0].appendChild(style); return style.sheet;
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}, insert_css_rule: function (sheet, selector, rules, index) {
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if (typeof sheet.insertRule === 'function') { sheet.insertRule(selector + "{" + rules + "}", index); }
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else if (typeof sheet.addRule === 'function') { sheet.addRule(selector, rules, index); }
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}, toBool: function (v) {
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if (typeof v == 'boolean')
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return v; if (typeof v == 'string') { v = v.toLowerCase(); return !(v == '' || v == 'no' || v == 'false' || v == '0'); }
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return Boolean(v);
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}
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}; var id_seq = 0; var GridStackEngine = function (width, onchange, float, height, items) { this.width = width; this.float = float || false; this.height = height || 0; this.nodes = items || []; this.onchange = onchange || function () { }; this._update_counter = 0; this._float = this.float; }; GridStackEngine.prototype.batch_update = function () { this._update_counter = 1; this.float = true; }; GridStackEngine.prototype.commit = function () { this._update_counter = 0; if (this._update_counter == 0) { this.float = this._float; this._pack_nodes(); this._notify(); } }; GridStackEngine.prototype._fix_collisions = function (node) {
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this._sort_nodes(-1); var nn = node, has_locked = Boolean(_.find(this.nodes, function (n) { return n.locked })); if (!this.float && !has_locked) { nn = { x: 0, y: node.y, width: this.width, height: node.height }; }
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while (true) {
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var collision_node = _.find(this.nodes, function (n) { return n != node && Utils.is_intercepted(n, nn); }, this); if (typeof collision_node == 'undefined') { return; }
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this.move_node(collision_node, collision_node.x, node.y + node.height, collision_node.width, collision_node.height, true);
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}
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}; GridStackEngine.prototype.is_area_empty = function (x, y, width, height) { var nn = { x: x || 0, y: y || 0, width: width || 1, height: height || 1 }; var collision_node = _.find(this.nodes, function (n) { return Utils.is_intercepted(n, nn); }, this); return collision_node == null; }; GridStackEngine.prototype._sort_nodes = function (dir) { this.nodes = Utils.sort(this.nodes, dir, this.width); }; GridStackEngine.prototype._pack_nodes = function () {
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this._sort_nodes(); if (this.float) {
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_.each(this.nodes, function (n, i) {
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if (n._updating || typeof n._orig_y == 'undefined' || n.y == n._orig_y)
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return; var new_y = n.y; while (new_y >= n._orig_y) {
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var collision_node = _.chain(this.nodes).find(function (bn) { return n != bn && Utils.is_intercepted({ x: n.x, y: new_y, width: n.width, height: n.height }, bn); }).value(); if (!collision_node) { n._dirty = true; n.y = new_y; }
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--new_y;
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}
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}, this);
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}
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else {
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_.each(this.nodes, function (n, i) {
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if (n.locked)
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return; while (n.y > 0) {
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var new_y = n.y - 1; var can_be_moved = i == 0; if (i > 0) { var collision_node = _.chain(this.nodes).take(i).find(function (bn) { return Utils.is_intercepted({ x: n.x, y: new_y, width: n.width, height: n.height }, bn); }).value(); can_be_moved = typeof collision_node == 'undefined'; }
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if (!can_be_moved) { break; }
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n._dirty = n.y != new_y; n.y = new_y;
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}
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}, this);
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}
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}; GridStackEngine.prototype._prepare_node = function (node, resizing) {
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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.auto_position = node.auto_position || false; node.no_resize = node.no_resize || false; node.no_move = node.no_move || false; if (node.width > this.width) { node.width = this.width; }
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else if (node.width < 1) { node.width = 1; }
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if (node.height < 1) { node.height = 1; }
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if (node.x < 0) { node.x = 0; }
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if (node.x + node.width > this.width) {
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if (resizing) { node.width = this.width - node.x; }
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else { node.x = this.width - node.width; }
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}
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if (node.y < 0) { node.y = 0; }
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return node;
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}; GridStackEngine.prototype._notify = function () {
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if (this._update_counter) { return; }
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var deleted_nodes = Array.prototype.slice.call(arguments, 1).concat(this.get_dirty_nodes()); deleted_nodes = deleted_nodes.concat(this.get_dirty_nodes()); this.onchange(deleted_nodes);
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}; GridStackEngine.prototype.clean_nodes = function () { _.each(this.nodes, function (n) { n._dirty = false }); }; GridStackEngine.prototype.get_dirty_nodes = function () { return _.filter(this.nodes, function (n) { return n._dirty; }); }; GridStackEngine.prototype.add_node = function (node) {
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node = this._prepare_node(node); if (typeof node.max_width != 'undefined') node.width = Math.min(node.width, node.max_width); if (typeof node.max_height != 'undefined') node.height = Math.min(node.height, node.max_height); if (typeof node.min_width != 'undefined') node.width = Math.max(node.width, node.min_width); if (typeof node.min_height != 'undefined') node.height = Math.max(node.height, node.min_height); node._id = ++id_seq; node._dirty = true; if (node.auto_position) {
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this._sort_nodes(); for (var i = 0; ; ++i) {
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var x = i % this.width, y = Math.floor(i / this.width); if (x + node.width > this.width) { continue; }
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if (!_.find(this.nodes, function (n) { return Utils.is_intercepted({ x: x, y: y, width: node.width, height: node.height }, n); })) { node.x = x; node.y = y; break; }
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}
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}
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this.nodes.push(node); this._fix_collisions(node); this._pack_nodes(); this._notify(); return node;
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}; GridStackEngine.prototype.remove_node = function (node) { node._id = null; this.nodes = _.without(this.nodes, node); this._pack_nodes(); this._notify(node); }; GridStackEngine.prototype.can_move_node = function (node, x, y, width, height) {
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var has_locked = Boolean(_.find(this.nodes, function (n) { return n.locked })); if (!this.height && !has_locked)
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return true; var cloned_node; var clone = new GridStackEngine(this.width, null, this.float, 0, _.map(this.nodes, function (n) { if (n == node) { cloned_node = $.extend({}, n); return cloned_node; } return $.extend({}, n) })); clone.move_node(cloned_node, x, y, width, height); var res = true; if (has_locked)
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res &= !Boolean(_.find(clone.nodes, function (n) { return n != cloned_node && Boolean(n.locked) && Boolean(n._dirty); })); if (this.height)
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res &= clone.get_grid_height() <= this.height; return res;
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}; GridStackEngine.prototype.can_be_placed_with_respect_to_height = function (node) {
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if (!this.height)
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return true; var clone = new GridStackEngine(this.width, null, this.float, 0, _.map(this.nodes, function (n) { return $.extend({}, n) })); clone.add_node(node); return clone.get_grid_height() <= this.height;
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}; GridStackEngine.prototype.move_node = function (node, x, y, width, height, no_pack) {
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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.max_width != 'undefined') width = Math.min(width, node.max_width); if (typeof node.max_height != 'undefined') height = Math.min(height, node.max_height); if (typeof node.min_width != 'undefined') width = Math.max(width, node.min_width); if (typeof node.min_height != 'undefined') height = Math.max(height, node.min_height); if (node.x == x && node.y == y && node.width == width && node.height == height) { return node; }
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var resizing = node.width != width; node._dirty = true; node.x = x; node.y = y; node.width = width; node.height = height; node = this._prepare_node(node, resizing); this._fix_collisions(node); if (!no_pack) { this._pack_nodes(); this._notify(); }
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return node;
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}; GridStackEngine.prototype.get_grid_height = function () { return _.reduce(this.nodes, function (memo, n) { return Math.max(memo, n.y + n.height); }, 0); }; GridStackEngine.prototype.begin_update = function (node) { _.each(this.nodes, function (n) { n._orig_y = n.y; }); node._updating = true; }; GridStackEngine.prototype.end_update = function () { _.each(this.nodes, function (n) { n._orig_y = n.y; }); var n = _.find(this.nodes, function (n) { return n._updating; }); if (n) { n._updating = false; } }; var GridStack = function (el, opts) {
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var self = this, one_column_mode; this.container = $(el); opts.item_class = opts.item_class || 'grid-stack-item'; var is_nested = this.container.closest('.' + opts.item_class).size() > 0; this.opts = _.defaults(opts || {}, { width: parseInt(this.container.attr('data-gs-width')) || 12, height: parseInt(this.container.attr('data-gs-height')) || 0, item_class: 'grid-stack-item', placeholder_class: 'grid-stack-placeholder', handle: '.grid-stack-item-content', cell_height: 60, vertical_margin: 20, auto: true, min_width: 768, float: false, _class: 'grid-stack-' + (Math.random() * 10000).toFixed(0), animate: Boolean(this.container.attr('data-gs-animate')) || false, always_show_resize_handle: opts.always_show_resize_handle || false, resizable: _.defaults(opts.resizable || {}, { autoHide: !(opts.always_show_resize_handle || false), handles: 'se' }), draggable: _.defaults(opts.draggable || {}, { handle: '.grid-stack-item-content', scroll: false, appendTo: 'body' }) }); this.opts.is_nested = is_nested; this.container.addClass(this.opts._class); if (is_nested) { this.container.addClass('grid-stack-nested'); }
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this._init_styles(); this.grid = new GridStackEngine(this.opts.width, function (nodes) {
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var max_height = 0; _.each(nodes, function (n) {
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if (n._id == null) { n.el.remove(); }
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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); max_height = Math.max(max_height, n.y + n.height); }
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}); self._update_styles(max_height + 10);
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}, this.opts.float, this.opts.height); if (this.opts.auto) { var elements = []; var _this = this; this.container.children('.' + this.opts.item_class).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._prepare_element(i.el); }).value(); }
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this.set_animation(this.opts.animate); this.placeholder = $('<div class="' + this.opts.placeholder_class + ' ' + this.opts.item_class + '"><div class="placeholder-content" /></div>').hide(); this.container.append(this.placeholder); this.container.height((this.grid.get_grid_height()) * (this.opts.cell_height + this.opts.vertical_margin) - this.opts.vertical_margin); var on_resize_handler = function () {
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if (self._is_one_column_mode()) {
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if (one_column_mode)
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return; one_column_mode = true; self.grid._sort_nodes(); _.each(self.grid.nodes, function (node) {
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self.container.append(node.el); if (!node.no_move) { node.el.draggable('disable'); }
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if (!node.no_resize) { node.el.resizable('disable'); }
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});
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}
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else {
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if (!one_column_mode)
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return; one_column_mode = false; _.each(self.grid.nodes, function (node) {
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if (!node.no_move) { node.el.draggable('enable'); }
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if (!node.no_resize) { node.el.resizable('enable'); }
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});
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}
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}; $(window).resize(on_resize_handler); on_resize_handler();
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}; GridStack.prototype._init_styles = function () {
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if (this._styles_id) { $('[data-gs-id="' + this._styles_id + '"]').remove(); }
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this._styles_id = 'gridstack-style-' + (Math.random() * 100000).toFixed(); this._styles = Utils.create_stylesheet(this._styles_id); if (this._styles != null)
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this._styles._max = 0;
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}; GridStack.prototype._update_styles = function (max_height) {
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if (this._styles == null) { return; }
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var prefix = '.' + this.opts._class + ' .' + this.opts.item_class; if (typeof max_height == 'undefined') { max_height = this._styles._max; this._init_styles(); this._update_container_height(); }
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if (this._styles._max == 0) { Utils.insert_css_rule(this._styles, prefix, 'min-height: ' + (this.opts.cell_height) + 'px;', 0); }
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if (max_height > this._styles._max) {
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for (var i = this._styles._max; i < max_height; ++i) { Utils.insert_css_rule(this._styles, prefix + '[data-gs-height="' + (i + 1) + '"]', 'height: ' + (this.opts.cell_height * (i + 1) + this.opts.vertical_margin * i) + 'px;', i); Utils.insert_css_rule(this._styles, prefix + '[data-gs-min-height="' + (i + 1) + '"]', 'min-height: ' + (this.opts.cell_height * (i + 1) + this.opts.vertical_margin * i) + 'px;', i); Utils.insert_css_rule(this._styles, prefix + '[data-gs-max-height="' + (i + 1) + '"]', 'max-height: ' + (this.opts.cell_height * (i + 1) + this.opts.vertical_margin * i) + 'px;', i); Utils.insert_css_rule(this._styles, prefix + '[data-gs-y="' + i + '"]', 'top: ' + (this.opts.cell_height * i + this.opts.vertical_margin * i) + 'px;', i); }
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this._styles._max = max_height;
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}
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}; GridStack.prototype._update_container_height = function () {
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if (this.grid._update_counter) { return; }
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this.container.height(this.grid.get_grid_height() * (this.opts.cell_height + this.opts.vertical_margin) - this.opts.vertical_margin);
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}; GridStack.prototype._is_one_column_mode = function () { return $(window).width() <= this.opts.min_width; }; GridStack.prototype._prepare_element = function (el) {
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var self = this; el = $(el); el.addClass(this.opts.item_class); var node = self.grid.add_node({ x: el.attr('data-gs-x'), y: el.attr('data-gs-y'), width: el.attr('data-gs-width'), height: el.attr('data-gs-height'), max_width: el.attr('data-gs-max-width'), min_width: el.attr('data-gs-min-width'), max_height: el.attr('data-gs-max-height'), min_height: el.attr('data-gs-min-height'), auto_position: Utils.toBool(el.attr('data-gs-auto-position')), no_resize: Utils.toBool(el.attr('data-gs-no-resize')), no_move: Utils.toBool(el.attr('data-gs-no-move')), locked: Utils.toBool(el.attr('data-gs-locked')), el: el }); el.data('_gridstack_node', node); var cell_width, cell_height; var on_start_moving = function (event, ui) { var o = $(this); self.grid.clean_nodes(); self.grid.begin_update(node); cell_width = Math.ceil(o.outerWidth() / o.attr('data-gs-width')); cell_height = self.opts.cell_height + self.opts.vertical_margin; self.placeholder.attr('data-gs-x', o.attr('data-gs-x')).attr('data-gs-y', o.attr('data-gs-y')).attr('data-gs-width', o.attr('data-gs-width')).attr('data-gs-height', o.attr('data-gs-height')).show(); node.el = self.placeholder; el.resizable('option', 'minWidth', cell_width * (node.min_width || 1)); el.resizable('option', 'minHeight', self.opts.cell_height * (node.min_height || 1)); }; var on_end_moving = function (event, ui) { var o = $(this); node.el = o; self.placeholder.hide(); o.attr('data-gs-x', node.x).attr('data-gs-y', node.y).attr('data-gs-width', node.width).attr('data-gs-height', node.height).removeAttr('style'); self._update_container_height(); self.container.trigger('change', [self.grid.get_dirty_nodes()]); self.grid.end_update(); }; el.draggable(_.extend(this.opts.draggable, {
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start: on_start_moving, stop: on_end_moving, drag: function (event, ui) {
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var x = Math.round(ui.position.left / cell_width), y = Math.floor((ui.position.top + cell_height / 2) / cell_height); if (!self.grid.can_move_node(node, x, y, node.width, node.height)) { return; }
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self.grid.move_node(node, x, y); self._update_container_height();
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}, containment: this.opts.is_nested ? this.container.parent() : null
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})).resizable(_.extend(this.opts.resizable, {
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start: on_start_moving, stop: on_end_moving, resize: function (event, ui) {
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var x = Math.round(ui.position.left / cell_width), y = Math.floor((ui.position.top + cell_height / 2) / cell_height), width = Math.round(ui.size.width / cell_width), height = Math.round(ui.size.height / cell_height); if (!self.grid.can_move_node(node, x, y, width, height)) { return; }
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self.grid.move_node(node, x, y, width, height); self._update_container_height();
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}
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})); if (node.no_move || this._is_one_column_mode()) { el.draggable('disable'); }
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if (node.no_resize || this._is_one_column_mode()) { el.resizable('disable'); }
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el.attr('data-gs-locked', node.locked ? 'yes' : null);
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}; GridStack.prototype.set_animation = function (enable) {
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if (enable) { this.container.addClass('grid-stack-animate'); }
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else { this.container.removeClass('grid-stack-animate'); }
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}; GridStack.prototype.add_widget = function (el, x, y, width, height, auto_position) { el = $(el); if (typeof x != 'undefined') el.attr('data-gs-x', x); if (typeof y != 'undefined') el.attr('data-gs-y', y); if (typeof width != 'undefined') el.attr('data-gs-width', width); if (typeof height != 'undefined') el.attr('data-gs-height', height); if (typeof auto_position != 'undefined') el.attr('data-gs-auto-position', auto_position ? 'yes' : null); this.container.append(el); this._prepare_element(el); this._update_container_height(); return el; }; GridStack.prototype.will_it_fit = function (x, y, width, height, auto_position) { var node = { x: x, y: y, width: width, height: height, auto_position: auto_position }; return this.grid.can_be_placed_with_respect_to_height(node); }; GridStack.prototype.remove_widget = function (el, detach_node) {
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detach_node = typeof detach_node === 'undefined' ? true : detach_node; el = $(el); var node = el.data('_gridstack_node'); this.grid.remove_node(node); el.removeData('_gridstack_node'); this._update_container_height(); if (detach_node)
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el.remove();
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}; GridStack.prototype.remove_all = function (detach_node) { _.each(this.grid.nodes, function (node) { this.remove_widget(node.el, detach_node); }, this); this.grid.nodes = []; this._update_container_height(); }; GridStack.prototype.resizable = function (el, val) {
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el = $(el); el.each(function (index, el) {
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el = $(el); var node = el.data('_gridstack_node'); if (typeof node == 'undefined' || node == null) { return; }
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node.no_resize = !(val || false); if (node.no_resize) { el.resizable('disable'); }
|
|||
|
|
else { el.resizable('enable'); }
|
|||
|
|
}); return this;
|
|||
|
|
}; GridStack.prototype.movable = function (el, val) {
|
|||
|
|
el = $(el); el.each(function (index, el) {
|
|||
|
|
el = $(el); var node = el.data('_gridstack_node'); if (typeof node == 'undefined' || node == null) { return; }
|
|||
|
|
node.no_move = !(val || false); if (node.no_move) { el.draggable('disable'); }
|
|||
|
|
else { el.draggable('enable'); }
|
|||
|
|
}); return this;
|
|||
|
|
}; GridStack.prototype.disable = function () { this.movable(this.container.children('.' + this.opts.item_class), false); this.resizable(this.container.children('.' + this.opts.item_class), false); }; GridStack.prototype.enable = function () { this.movable(this.container.children('.' + this.opts.item_class), true); this.resizable(this.container.children('.' + this.opts.item_class), true); }; GridStack.prototype.locked = function (el, val) {
|
|||
|
|
el = $(el); el.each(function (index, el) {
|
|||
|
|
el = $(el); var node = el.data('_gridstack_node'); if (typeof node == 'undefined' || node == null) { return; }
|
|||
|
|
node.locked = (val || false); el.attr('data-gs-locked', node.locked ? 'yes' : null);
|
|||
|
|
}); return this;
|
|||
|
|
}; GridStack.prototype._update_element = function (el, callback) {
|
|||
|
|
el = $(el).first(); var node = el.data('_gridstack_node'); if (typeof node == 'undefined' || node == null) { return; }
|
|||
|
|
var self = this; self.grid.clean_nodes(); self.grid.begin_update(node); callback.call(this, el, node); self._update_container_height(); self.container.trigger('change', [self.grid.get_dirty_nodes()]); self.grid.end_update();
|
|||
|
|
}; GridStack.prototype.resize = function (el, width, height) { this._update_element(el, function (el, node) { width = (width != null && typeof width != 'undefined') ? width : node.width; height = (height != null && typeof height != 'undefined') ? height : node.height; this.grid.move_node(node, node.x, node.y, width, height); }); }; GridStack.prototype.move = function (el, x, y) { this._update_element(el, function (el, node) { x = (x != null && typeof x != 'undefined') ? x : node.x; y = (y != null && typeof y != 'undefined') ? y : node.y; this.grid.move_node(node, x, y, node.width, node.height); }); }; GridStack.prototype.update = function (el, x, y, width, height) { this._update_element(el, function (el, node) { x = (x != null && typeof x != 'undefined') ? x : node.x; y = (y != null && typeof y != 'undefined') ? y : node.y; width = (width != null && typeof width != 'undefined') ? width : node.width; height = (height != null && typeof height != 'undefined') ? height : node.height; this.grid.move_node(node, x, y, width, height); }); }; GridStack.prototype.cell_height = function (val) {
|
|||
|
|
if (typeof val == 'undefined') { return this.opts.cell_height; }
|
|||
|
|
val = parseInt(val); if (val == this.opts.cell_height)
|
|||
|
|
return; this.opts.cell_height = val || this.opts.cell_height; this._update_styles();
|
|||
|
|
}; GridStack.prototype.cell_width = function () { var o = this.container.children('.' + this.opts.item_class).first(); return Math.ceil(o.outerWidth() / o.attr('data-gs-width')); }; GridStack.prototype.get_cell_from_pixel = function (position) { var containerPos = this.container.position(); var relativeLeft = position.left - containerPos.left; var relativeTop = position.top - containerPos.top; var column_width = Math.floor(this.container.width() / this.opts.width); var row_height = this.opts.cell_height + this.opts.vertical_margin; return { x: Math.floor(relativeLeft / column_width), y: Math.floor(relativeTop / row_height) }; }; GridStack.prototype.batch_update = function () { this.grid.batch_update(); }; GridStack.prototype.commit = function () { this.grid.commit(); this._update_container_height() }; GridStack.prototype.is_area_empty = function (x, y, width, height) { return this.grid.is_area_empty(x, y, width, height); }; scope.GridStackUI = GridStack; scope.GridStackUI.Utils = Utils; $.fn.gridstack = function (opts) { return this.each(function () { if (!$(this).data('gridstack')) { $(this).data('gridstack', new GridStack(this, opts)); } }); }; return scope.GridStackUI;
|
|||
|
|
});
|