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<?php |
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/** |
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* Copyright (C) 2012-2023 Graham Breach |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/** |
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* For more information, please contact <graham@goat1000.com> |
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*/ |
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|
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namespace Goat1000\SVGGraph; |
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|
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class Javascript { |
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|
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private $graph; |
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protected $functions = []; |
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protected $variables = []; |
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protected $comments = []; |
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protected $init_functions = []; |
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protected $fader_enabled = false; |
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protected $clickshow_enabled = false; |
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|
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private $namespace = ''; |
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|
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public function __construct(&$graph) |
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{ |
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$this->graph =& $graph; |
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|
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if($graph->getOption('namespace')) |
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$this->namespace = 'svg:'; |
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} |
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|
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/** |
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* Adds any number of functions by name |
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*/ |
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public function addFuncs() |
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{ |
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$fns = func_get_args(); |
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foreach($fns as $fn) { |
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if(!isset($this->functions[$fn])) |
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$this->addFunction($fn); |
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} |
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} |
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|
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/** |
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* Adds a javascript function |
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*/ |
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public function addFunction($name, $realname = null) |
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{ |
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if($realname === null) |
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$realname = $name; |
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|
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if(isset($this->functions[$realname])) |
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return true; |
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|
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// functions that fit on one line |
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$simple_functions = [ |
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'setattr' => |
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"function setattr(i,a,v){i.setAttributeNS(null,a,v);return v}\n", |
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'getE' => |
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"function getE(i){return document.getElementById(i)}\n", |
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'newtext' => |
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"function newtext(c){return document.createTextNode(c)}\n", |
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'textAttr' => |
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"function textAttr(e,a){var s=e.getAttributeNS(null,a);return s?s:'';}\n", |
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// round to nearest whole number |
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'kround' => "function kround(v){return Math.round(v)|0;}\n", |
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// floor function |
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'kroundDown' => "function kroundDown(v){return v|0;}\n", |
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]; |
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if(isset($simple_functions[$name])) |
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return $this->insertFunction($name, $simple_functions[$name]); |
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|
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// functions that only use a template and other functions |
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$template_functions = [ |
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'dateFormat' => [], |
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'dateStrValueX' => ['dateFormat'], |
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'dateStrValueY' => ['dateFormat'], |
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'fading' => [], |
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'finditem' => [], |
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'fitRect' => ['setattr'], |
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'getData' => [], |
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'keyStrValueX' => [], |
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'keyStrValueY' => [], |
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'logStrValueX' => [], |
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'logStrValueY' => [], |
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'newel' => ['setattr'], |
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'strValueX' => [], |
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'strValueY' => [], |
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'svgCursorCoords' => ['svgNode'], |
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]; |
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if(isset($template_functions[$name])) { |
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foreach($template_functions[$name] as $dependency) |
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$this->addFunction($dependency); |
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return $this->insertTemplate($name); |
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} |
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|
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switch($name) |
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{ |
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case 'showhide' : |
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$this->addFunction('setattr'); |
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$fn = "function showhide(e,h){setattr(e,'visibility',h?'visible':'hidden');}\n"; |
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break; |
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|
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case 'tooltip' : |
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$this->addFuncs('getE', 'setattr', 'newel', 'showhide', 'svgNode', |
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'svgCursorCoords'); |
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$this->insertVariable('tooltipOn', ''); |
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$opts = ['stroke_width', 'shadow_opacity', 'round', 'padding', |
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'back_colour', 'offset', 'align']; |
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$vars = []; |
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foreach($opts as $opt) { |
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$vars[$opt] = $this->graph->getOption('tooltip_' . $opt); |
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} |
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|
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$round_part = ''; |
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$shadow_part = ''; |
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$vars['edge_space'] = $vars['stroke_width']; |
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$vars['stroke'] = $this->graph->getOption('tooltip_stroke_colour', |
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'tooltip_colour', ['@','#000']); |
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if($vars['round'] > 0) { |
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$round = new Number($vars['round'], 'px'); |
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$round_part = ',rx:"' . $round . '",ry:"' . $round . '"'; |
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} |
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|
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if(is_numeric($vars['shadow_opacity'])) { |
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$ttoffs = 2 - $vars['stroke_width'] / 2; |
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$vars['edge_space'] += $ttoffs; |
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$ttoffs = new Number($ttoffs, 'px'); |
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$shadow_part = 'shadow = newel("rect",{id:"ttshdw",fill:"#000",' . |
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'width:"10px",height:"10px",opacity:' . |
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new Number($vars['shadow_opacity']) . |
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',x:"' . $ttoffs . '",y:"' . $ttoffs . '"'; |
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if($round_part !== '') |
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$shadow_part .= $round_part; |
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$shadow_part .= '});'; |
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$shadow_part .= 'tt.appendChild(shadow);'; |
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} |
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|
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$vars['transform_part'] = "setattr(inner, 'transform', 'translate("; |
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switch($vars['align']) { |
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case 'left' : |
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$vars['transform_part'] .= new Number($vars['padding']) . ",0)');"; |
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break; |
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case 'right' : |
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$vars['transform_part'] .= "' + (bw - " . new Number($vars['padding']) . ") + ',0)');"; |
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break; |
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default: |
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$vars['transform_part'] .= "' + (bw / 2) + ',0)');"; |
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} |
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|
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$vars['round_part'] = $round_part; |
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$vars['shadow_part'] = $shadow_part; |
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$vars['dpad'] = 2 * $vars['padding']; |
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$vars['back_colour'] = new Colour($this->graph, $vars['back_colour']); |
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$vars['stroke'] = new Colour($this->graph, $vars['stroke']); |
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return $this->insertTemplate('tooltip', $vars); |
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|
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case 'texttt' : |
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$this->addFuncs('getE', 'setattr', 'newel', 'newtext'); |
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$opts = ['padding', 'colour', 'font', 'font_weight', 'align']; |
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$vars = []; |
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foreach($opts as $opt) |
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$vars[$opt] = $this->graph->getOption('tooltip_' . $opt); |
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$vars['font_size'] = Number::units($this->graph->getOption('tooltip_font_size')); |
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$vars['line_spacing'] = Number::units($this->graph->getOption('tooltip_line_spacing')); |
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$vars['colour'] = new Colour($this->graph, $vars['colour'], false, false); |
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$vars['ttoffset'] = $vars['font_size'] + $vars['padding']; |
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if($vars['line_spacing'] === null || $vars['line_spacing'] < 1) |
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$vars['tty'] = $vars['ttoffset']; |
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else |
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$vars['tty'] = $vars['line_spacing']; |
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|
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$anchors = ['left' => 'start', 'right' => 'end']; |
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$vars['anchor'] = isset($anchors[$vars['align']]) ? |
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$anchors[$vars['align']] : 'middle'; |
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return $this->insertTemplate('texttt', $vars); |
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|
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case 'ttEvent' : |
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$this->addFuncs('finditem'); |
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$this->addInitFunction('ttEvent'); |
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return $this->insertTemplate('ttEvent'); |
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|
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case 'popFront' : |
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$this->addFuncs('getE', 'finditem'); |
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$this->addInitFunction('popFront'); |
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return $this->insertTemplate('popFront'); |
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|
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case 'clickShowEvent' : |
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if($this->fader_enabled) |
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return $this->fadeAndClick(); |
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|
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$this->addFuncs('getE', 'finditem', 'setattr'); |
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$this->addInitFunction('clickShowEvent'); |
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return $this->insertTemplate('clickShowEvent'); |
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|
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case 'fade' : |
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if($this->clickshow_enabled) |
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return $this->fadeAndClick(); |
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|
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$this->addFuncs('getE', 'setattr', 'textAttr'); |
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$this->addInitFunction('fade'); |
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return $this->insertTemplate('fade'); |
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|
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case 'fadeEventIn' : |
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$this->addFuncs('finditem'); |
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$this->addInitFunction('fadeEventIn'); |
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return $this->insertTemplate('fadeEventIn'); |
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|
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case 'fadeEventOut' : |
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$this->addFuncs('finditem'); |
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$this->addInitFunction('fadeEventOut'); |
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return $this->insertTemplate('fadeEventOut'); |
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|
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case 'duplicate' : |
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$this->addFuncs('getE', 'newel', 'setattr'); |
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$this->addInitFunction('initDups'); |
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return $this->insertTemplate('duplicate', ['namespace' => $this->namespace]); |
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|
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case 'svgNode' : |
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return $this->insertTemplate('svgNode', ['namespace' => $this->namespace]); |
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|
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case 'autoHide' : |
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$this->addFuncs('getE', 'setattr', 'finditem'); |
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$this->addInitFunction('autoHide'); |
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return $this->insertTemplate('autoHide'); |
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|
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case 'chEvt' : |
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$this->addInitFunction('chEvt'); |
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return $this->insertTemplate('chEvt'); |
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|
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case 'showCoords' : |
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$this->addFuncs('getE', 'newel', 'newtext', 'getData', 'showhide', |
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'fitRect', 'textAttr', 'strValueX', 'strValueY'); |
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|
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// format text for assoc X, assoc Y or x,y |
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$text_format_x = 'fnx(de,x,bb.width,gx,' . |
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'textAttr(ti,"unitsbx"),textAttr(ti,"unitsx"))'; |
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$text_format_y = 'fny(de,bb.height-y,bb.height,gy,' . |
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'textAttr(ti,"unitsby"),textAttr(ti,"unitsy"))'; |
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|
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if(!$this->graph->getOption('crosshairs_show_h')) |
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$text_format = $text_format_x; |
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elseif(!$this->graph->getOption('crosshairs_show_v')) |
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$text_format = $text_format_y; |
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else |
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$text_format = $text_format_x . ' + ", " + ' . $text_format_y; |
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|
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$pad = max(0, (int)$this->graph->getOption('crosshairs_text_padding')); |
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$space = max(0, (int)$this->graph->getOption('crosshairs_text_space')); |
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$vars = [ |
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'text_format' => $text_format, |
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'pad' => $pad, |
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// calculate these here to save doing it in JS |
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'pad_space' => $pad + $space, |
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'space2' => $space * 2, |
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]; |
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return $this->insertTemplate('showCoords', $vars); |
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|
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case 'crosshairs' : |
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$this->addFuncs('chEvt', 'setattr', 'svgNode', 'svgCursorCoords', |
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'showhide'); |
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|
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$vars = [ 'show_x' => '', 'show_y' => '', 'show_text' => '']; |
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if($this->graph->getOption('crosshairs_show_text')) { |
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$this->addFunction('showCoords'); |
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$vars['show_text'] = 'showCoords(de, x - bb.x, y - bb.y, bb, on);'; |
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} |
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if($this->graph->getOption('crosshairs_show_h')) |
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$vars['show_x'] = 'showhide(xc,on);'; |
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if($this->graph->getOption('crosshairs_show_v')) |
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$vars['show_y'] = 'showhide(yc,on);'; |
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return $this->insertTemplate('crosshairs', $vars); |
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|
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case 'dragEvent' : |
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$this->addFuncs('newel', 'getE', 'setattr', 'finditem', 'svgCursorCoords'); |
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$this->addInitFunction('dragEvent'); |
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return $this->insertTemplate('dragEvent'); |
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|
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case 'magEvt' : |
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$this->addInitFunction('magEvt'); |
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$vars = ['namespace' => $this->namespace]; |
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return $this->insertTemplate('magEvt', $vars); |
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|
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default : |
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// Trying to add a function that doesn't exist? |
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throw new \Exception('Unknown function "' . $name . '"'); |
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} |
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|
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$this->insertFunction($realname, $fn); |
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} |
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|
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/** |
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* Inserts a Javascript function into the list |
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*/ |
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public function insertFunction($name, $fn) |
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{ |
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$this->functions[$name] = $fn; |
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} |
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|
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/** |
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* Inserts a function from a template |
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*/ |
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public function insertTemplate($name, $vars = null, $realname = null) |
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{ |
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if($realname === null) |
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$realname = $name; |
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$file_path = __DIR__ . '/templates/' . $name . '.txt'; |
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if(!file_exists($file_path)) |
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throw new \Exception('Template [' . $name . '.txt] not found.'); |
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$content = file_get_contents($file_path); |
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|
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if($vars !== null) { |
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// insert variables into template |
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$content = preg_replace_callback('/{\$([a-z]+):([a-z0-9_]+)}/', |
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function($m) use($vars) { |
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list(, $type, $var) = $m; |
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if(!isset($vars[$var])) |
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throw new \Exception('Variable [' . $var . '] not defined.'); |
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|
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$value = $vars[$var]; |
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if('number' === $type) { |
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if(is_numeric($value)) |
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return new Number($value); |
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|
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if(is_object($value) && get_class($value) === 'Goat1000\\SVGGraph\\Number') |
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return $value; |
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|
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throw new \Exception('Variable [' . $var . '] not numeric, value "' . |
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$value . '".'); |
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} |
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return $value; }, $content); |
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} |
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|
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$this->insertFunction($realname, $content); |
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} |
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|
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/** |
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* Convert hex from regex matched entity to javascript escape sequence |
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*/ |
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public static function hex2js($m) |
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{ |
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return sprintf('\u%04x', base_convert($m[1], 16, 10)); |
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} |
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|
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/** |
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* Convert decimal from regex matched entity to javascript escape sequence |
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*/ |
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public static function dec2js($m) |
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{ |
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return sprintf('\u%04x', $m[1]); |
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} |
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|
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public static function reEscape($string) |
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{ |
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// convert XML char entities to JS unicode |
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$string = preg_replace_callback('/&#x([a-f0-9]+);/', |
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'Goat1000\\SVGGraph\\Javascript::hex2js', $string); |
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$string = preg_replace_callback('/&#([0-9]+);/', |
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'Goat1000\\SVGGraph\\Javascript::dec2js', $string); |
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return $string; |
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} |
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|
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/** |
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* Adds a Javascript variable |
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* - use $value:$more for assoc |
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* - use NULL:$more for array |
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*/ |
| 380 |
public function insertVariable($var, $value, $more = null, $quote = true) |
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{ |
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$q = $quote ? '"' : ''; |
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if($more === null) |
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$this->variables[$var] = $q . $this->reEscape($value) . $q; |
| 385 |
elseif($value === null) |
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$this->variables[$var][] = $q . $this->reEscape($more) . $q; |
| 387 |
else |
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$this->variables[$var][$value] = $q . $this->reEscape($more) . $q; |
| 389 |
} |
| 390 |
|
| 391 |
/** |
| 392 |
* Insert a numeric variable |
| 393 |
*/ |
| 394 |
public function insertNumberVar($var, $value) |
| 395 |
{ |
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$this->variables[$var] = new Number($value); |
| 397 |
} |
| 398 |
|
| 399 |
/** |
| 400 |
* Adds an init function to the list |
| 401 |
*/ |
| 402 |
public function addInitFunction($name) |
| 403 |
{ |
| 404 |
$this->init_functions[$name] = 1; |
| 405 |
} |
| 406 |
|
| 407 |
/** |
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* Insert a comment into the Javascript section - handy for debugging! |
| 409 |
*/ |
| 410 |
public function insertComment($details) |
| 411 |
{ |
| 412 |
$this->comments[] = $details; |
| 413 |
} |
| 414 |
|
| 415 |
/** |
| 416 |
* Fade and click at the same time requires different functions |
| 417 |
*/ |
| 418 |
private function fadeAndClick() |
| 419 |
{ |
| 420 |
$this->addFuncs('getE', 'finditem', 'fading', 'textAttr', 'setattr'); |
| 421 |
$this->addInitFunction('clickShowEvent'); |
| 422 |
$this->addInitFunction('fade'); |
| 423 |
$this->insertTemplate('clickShowEvent_fade', null, 'clickShowEvent'); |
| 424 |
$this->insertTemplate('fade_clickShow', null, 'fade'); |
| 425 |
} |
| 426 |
|
| 427 |
/** |
| 428 |
* Sets the tooltip for an element |
| 429 |
*/ |
| 430 |
public function setTooltip(&$element, $text, $duplicate = false) |
| 431 |
{ |
| 432 |
$this->addFuncs('tooltip', 'texttt', 'ttEvent'); |
| 433 |
if(!isset($element['id'])) |
| 434 |
$element['id'] = $this->graph->newID(); |
| 435 |
$this->insertVariable('tips', $element['id'], $text); |
| 436 |
|
| 437 |
if($duplicate) { |
| 438 |
$this->addOverlay($element['id'], $this->graph->newID()); |
| 439 |
} |
| 440 |
} |
| 441 |
|
| 442 |
/** |
| 443 |
* Sets click show/hide for an element |
| 444 |
* If using with fading, this must be used first |
| 445 |
*/ |
| 446 |
public function setClickShow(&$element, $target, $hidden, $duplicate = false) |
| 447 |
{ |
| 448 |
if(!isset($element['id'])) |
| 449 |
$element['id'] = $this->graph->newID(); |
| 450 |
$id = $duplicate ? $this->graph->newID() : $element['id']; |
| 451 |
if($duplicate) |
| 452 |
$this->addOverlay($element['id'], $id); |
| 453 |
|
| 454 |
$this->addFunction('clickShowEvent'); |
| 455 |
$show = $hidden ? 0 : 1; |
| 456 |
$this->insertVariable('clickElements', $element['id'], $target); |
| 457 |
$this->insertVariable('clickMap', $target, $show, false); |
| 458 |
$this->clickshow_enabled = true; |
| 459 |
} |
| 460 |
|
| 461 |
/** |
| 462 |
* Sets pop to front for $target when mouse over $element |
| 463 |
*/ |
| 464 |
public function setPopFront(&$element, $target, $duplicate = false) |
| 465 |
{ |
| 466 |
if(!isset($element['id'])) |
| 467 |
$element['id'] = $this->graph->newID(); |
| 468 |
$id = $duplicate ? $this->graph->newID() : $element['id']; |
| 469 |
if($duplicate) |
| 470 |
$this->addOverlay($element['id'], $id); |
| 471 |
|
| 472 |
$this->addFunction('popFront'); |
| 473 |
$this->insertVariable('popfronts', $element['id'], $target); |
| 474 |
} |
| 475 |
|
| 476 |
/** |
| 477 |
* Sets the fader for an element |
| 478 |
* If using with clickShow, that must be used first |
| 479 |
*/ |
| 480 |
public function setFader(&$element, $in, $out, $target = null, |
| 481 |
$duplicate = false) |
| 482 |
{ |
| 483 |
if(!isset($element['id'])) |
| 484 |
$element['id'] = $this->graph->newID(); |
| 485 |
if($target === null) |
| 486 |
$target = $element['id']; |
| 487 |
$id = $duplicate ? $this->graph->newID() : $element['id']; |
| 488 |
|
| 489 |
$this->addFunction('fade'); |
| 490 |
if($in) { |
| 491 |
$this->addFunction('fadeEventIn'); |
| 492 |
$this->insertNumberVar('fistep', $in); |
| 493 |
} |
| 494 |
if($out) { |
| 495 |
$this->addFunction('fadeEventOut'); |
| 496 |
$this->insertNumberVar('fostep', -$out); |
| 497 |
} |
| 498 |
$this->insertVariable('fades', $element['id'], |
| 499 |
'{id:"' . $target . '",dir:0}', false); |
| 500 |
$this->insertNumberVar('fstart', $in ? 0 : 1); |
| 501 |
|
| 502 |
if($duplicate) |
| 503 |
$this->addOverlay($element['id'], $id); |
| 504 |
$this->fader_enabled = true; |
| 505 |
} |
| 506 |
|
| 507 |
/** |
| 508 |
* Makes an item draggable |
| 509 |
*/ |
| 510 |
public function setDraggable(&$element) |
| 511 |
{ |
| 512 |
if(!isset($element['id'])) |
| 513 |
$element['id'] = $this->graph->newID(); |
| 514 |
$this->addFunction('dragEvent'); |
| 515 |
$this->insertVariable('draggable', $element['id'], 0); |
| 516 |
} |
| 517 |
|
| 518 |
/** |
| 519 |
* Makes something auto-hide |
| 520 |
*/ |
| 521 |
public function autoHide(&$element, $hidden_opacity = 0, $full_opacity = 1) |
| 522 |
{ |
| 523 |
if(!isset($element['id'])) |
| 524 |
$element['id'] = $this->graph->newID(); |
| 525 |
$this->addFunction('autoHide'); |
| 526 |
$this->insertVariable('autohide', $element['id'], 0); |
| 527 |
$this->insertVariable('ah_opacity', $element['id'], '[' . |
| 528 |
new Number($hidden_opacity) . ',' . |
| 529 |
new Number($full_opacity) . ']', false); |
| 530 |
} |
| 531 |
|
| 532 |
/** |
| 533 |
* Adds magnifier |
| 534 |
*/ |
| 535 |
public function magnifier() |
| 536 |
{ |
| 537 |
$max_mag = 10.0; |
| 538 |
$min_mag = 1.1; |
| 539 |
$max_pan = 10.0; |
| 540 |
$min_pan = 1.1; |
| 541 |
$mag = (float)$this->graph->getOption('magnify'); |
| 542 |
$pan = (float)$this->graph->getOption('magnify_pan'); |
| 543 |
if($mag <= $min_mag) |
| 544 |
$mag = $min_mag; |
| 545 |
elseif($mag > $max_mag) |
| 546 |
$mag = $max_mag; |
| 547 |
if($pan <= $min_pan) |
| 548 |
$pan = $min_pan; |
| 549 |
elseif($pan > $max_pan) |
| 550 |
$pan = $max_pan; |
| 551 |
|
| 552 |
$vars = [ |
| 553 |
'magnification' => $mag, |
| 554 |
'sensitivity' => $pan, |
| 555 |
'namespace' => $this->namespace, |
| 556 |
]; |
| 557 |
$this->addFuncs('magEvt','svgNode','svgCursorCoords','setattr'); |
| 558 |
$this->insertTemplate('magnifier', $vars); |
| 559 |
} |
| 560 |
|
| 561 |
/** |
| 562 |
* Add an overlaid copy of an element, with opacity of 0 |
| 563 |
*/ |
| 564 |
public function addOverlay($from, $to) |
| 565 |
{ |
| 566 |
$this->addFunction('duplicate'); |
| 567 |
|
| 568 |
// order matters, so clear previous value |
| 569 |
if(isset($this->variables['dups'][$from])) |
| 570 |
unset($this->variables['dups'][$from]); |
| 571 |
$this->insertVariable('dups', $from, $to); |
| 572 |
} |
| 573 |
|
| 574 |
/** |
| 575 |
* Returns the variables (and comments) as Javascript code |
| 576 |
*/ |
| 577 |
public function getVariables() |
| 578 |
{ |
| 579 |
$variables = ''; |
| 580 |
if(count($this->variables)) { |
| 581 |
$vlist = []; |
| 582 |
foreach($this->variables as $name => $value) { |
| 583 |
$var = $name; |
| 584 |
if(is_array($value)) { |
| 585 |
if(isset($value[0]) && isset($value[count($value)-1])) { |
| 586 |
$var .= '=[' . implode(',', $value) . ']'; |
| 587 |
} else { |
| 588 |
$vs = []; |
| 589 |
foreach($value as $k => $v) |
| 590 |
if($k) |
| 591 |
$vs[] = $k . ':' . $v; |
| 592 |
|
| 593 |
$var .= '={' . implode(',', $vs) . '}'; |
| 594 |
} |
| 595 |
} elseif($value !== null) { |
| 596 |
$var .= '=' . $value; |
| 597 |
} |
| 598 |
$vlist[] = $var; |
| 599 |
} |
| 600 |
$variables = 'var ' . implode(', ', $vlist) . ';'; |
| 601 |
} |
| 602 |
// comments can be stuck with the variables |
| 603 |
if(count($this->comments)) { |
| 604 |
foreach($this->comments as $c) { |
| 605 |
if(!is_string($c)) |
| 606 |
$c = print_r($c, true); |
| 607 |
$variables .= "\n// " . str_replace("\n", "\n// ", $c); |
| 608 |
} |
| 609 |
} |
| 610 |
return $variables; |
| 611 |
} |
| 612 |
|
| 613 |
/** |
| 614 |
* Returns the functions as Javascript code |
| 615 |
*/ |
| 616 |
public function getFunctions() |
| 617 |
{ |
| 618 |
$functions = ''; |
| 619 |
if(count($this->functions)) { |
| 620 |
if(count($this->init_functions)) { |
| 621 |
$vars = [ |
| 622 |
'init_funcs' => implode('();', array_keys($this->init_functions)) . '();' |
| 623 |
]; |
| 624 |
$this->insertTemplate('init', $vars); |
| 625 |
} |
| 626 |
$functions = implode('', $this->functions); |
| 627 |
} |
| 628 |
|
| 629 |
return $functions; |
| 630 |
} |
| 631 |
|
| 632 |
/** |
| 633 |
* Returns the onload code to use for the SVG |
| 634 |
*/ |
| 635 |
public function getOnload() |
| 636 |
{ |
| 637 |
if(count($this->init_functions)) |
| 638 |
return 'init()'; |
| 639 |
return ''; |
| 640 |
} |
| 641 |
|
| 642 |
/** |
| 643 |
* Returns all the code to be inserted into <script> |
| 644 |
*/ |
| 645 |
public function getCode($cdata, $minifier) |
| 646 |
{ |
| 647 |
$variables = $this->getVariables(); |
| 648 |
$functions = $this->getFunctions(); |
| 649 |
$onload = $this->getOnload(); |
| 650 |
|
| 651 |
if($variables == '' && $functions == '') |
| 652 |
return ''; |
| 653 |
|
| 654 |
if($onload != '') |
| 655 |
$functions .= "\n" . 'setTimeout(function(){' . $onload . '},10);'; |
| 656 |
|
| 657 |
$script = $variables . "\n" . $functions . "\n"; |
| 658 |
if(is_callable($minifier)) |
| 659 |
$script = call_user_func($minifier, $script); |
| 660 |
elseif($minifier !== null) |
| 661 |
$script = $this->minify($script); |
| 662 |
|
| 663 |
// make closure |
| 664 |
$script = '(function(){' . $script . "\n})();"; |
| 665 |
|
| 666 |
if($cdata) |
| 667 |
$script = "// <![CDATA[\n" . $script . "\n// ]]>"; |
| 668 |
|
| 669 |
return $script; |
| 670 |
} |
| 671 |
|
| 672 |
/** |
| 673 |
* Simple minifier |
| 674 |
*/ |
| 675 |
public static function minify($code) |
| 676 |
{ |
| 677 |
$start = strlen($code); |
| 678 |
$code = preg_replace( |
| 679 |
['/^\s+/m', '/\s*([{}=+<>,;?:)\/*-]|&&|\|\|)\s*/', ], |
| 680 |
['', '$1', ], |
| 681 |
$code); |
| 682 |
|
| 683 |
return $code; |
| 684 |
} |
| 685 |
} |
| 686 |
|
| 687 |
|
