Greasy Fork is available in English.

GM_config

A lightweight, reusable, cross-browser graphical settings framework for inclusion in user scripts.

Script này sẽ không được không được cài đặt trực tiếp. Nó là một thư viện cho các script khác để bao gồm các chỉ thị meta // @require https://update.greasyfork.org/scripts/28536/184529/GM_config.js

/*
Copyright 2009+, GM_config Contributors (https://github.com/sizzlemctwizzle/GM_config)

GM_config Contributors:
    Mike Medley <medleymind@gmail.com>
    Joe Simmons
    Izzy Soft
    Marti Martz

GM_config is distributed under the terms of the GNU Lesser General Public License.

    GM_config is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

// The GM_config constructor
function GM_configStruct() {
  // call init() if settings were passed to constructor
  if (arguments.length) {
    GM_configInit(this, arguments);
    this.onInit();
  }
}

// This is the initializer function
function GM_configInit(config, args) {
  // Initialize instance variables
  if (typeof config.fields == "undefined") {
    config.fields = {};
    config.onInit = config.onInit || function() {};
    config.onOpen = config.onOpen || function() {};
    config.onSave = config.onSave || function() {};
    config.onClose = config.onClose || function() {};
    config.onReset = config.onReset || function() {};
    config.isOpen = false;
    config.title = 'User Script Settings';
    config.css = {
      basic: [
        "#GM_config * { font-family: arial,tahoma,myriad pro,sans-serif; }",
        "#GM_config { background: #FFF; }",
        "#GM_config input[type='radio'] { margin-right: 8px; }",
        "#GM_config .indent40 { margin-left: 40%; }",
        "#GM_config .field_label { font-size: 12px; font-weight: bold; margin-right: 6px; }",
        "#GM_config .radio_label { font-size: 12px; }",
        "#GM_config .block { display: block; }",
        "#GM_config .saveclose_buttons { margin: 16px 10px 10px; padding: 2px 12px; }",
        "#GM_config .reset, #GM_config .reset a," +
          " #GM_config_buttons_holder { color: #000; text-align: right; }",
        "#GM_config .config_header { font-size: 20pt; margin: 0; }",
        "#GM_config .config_desc, #GM_config .section_desc, #GM_config .reset { font-size: 9pt; }",
        "#GM_config .center { text-align: center; }",
        "#GM_config .section_header_holder { margin-top: 8px; }",
        "#GM_config .config_var { margin: 0 0 4px; }",
        "#GM_config .section_header { background: #414141; border: 1px solid #000; color: #FFF;",
        " font-size: 13pt; margin: 0; }",
        "#GM_config .section_desc { background: #EFEFEF; border: 1px solid #CCC; color: #575757;" +
          " font-size: 9pt; margin: 0 0 6px; }"
        ].join('\n') + '\n',
      basicPrefix: "GM_config",
      stylish: ""
    };
  }

  if (args.length == 1 &&
    typeof args[0].id == "string" &&
    typeof args[0].appendChild != "function") var settings = args[0];
  else {
    // Provide backwards-compatibility with argument style intialization
    var settings = {};

    // loop through GM_config.init() arguments
    for (var i = 0, l = args.length, arg; i < l; ++i) {
      arg = args[i];

      // An element to use as the config window
      if (typeof arg.appendChild == "function") {
        settings.frame = arg;
        continue;
      }

      switch (typeof arg) {
        case 'object':
          for (var j in arg) { // could be a callback functions or settings object
            if (typeof arg[j] != "function") { // we are in the settings object
              settings.fields = arg; // store settings object
              break; // leave the loop
            } // otherwise it must be a callback function
            if (!settings.events) settings.events = {};
            settings.events[j] = arg[j];
          }
          break;
        case 'function': // passing a bare function is set to open callback
          settings.events = {onOpen: arg};
          break;
        case 'string': // could be custom CSS or the title string
          if (/\w+\s*\{\s*\w+\s*:\s*\w+[\s|\S]*\}/.test(arg))
            settings.css = arg;
          else
            settings.title = arg;
          break;
      }
    }
  }

  /* Initialize everything using the new settings object */
  // Set the id
  if (settings.id) config.id = settings.id;
  else if (typeof config.id == "undefined") config.id = 'GM_config';

  // Set the title
  if (settings.title) config.title = settings.title;

  // Set the custom css
  if (settings.css) config.css.stylish = settings.css;

  // Set the frame
  if (settings.frame) config.frame = settings.frame;

  // Set the event callbacks
  if (settings.events) {
    var events = settings.events;
    for (var e in events)
      config["on" + e.charAt(0).toUpperCase() + e.slice(1)] = events[e];
  }

  // Create the fields
  if (settings.fields) {
    var stored = config.read(), // read the stored settings
        fields = settings.fields,
        customTypes = settings.types || {};

    for (var id in fields) {
      var field = fields[id];

      // for each field definition create a field object
      if (field)
        config.fields[id] = new GM_configField(field, stored[id], id,
          customTypes[field.type]);
      else if (config.fields[id]) delete config.fields[id];
    }
  }

  // If the id has changed we must modify the default style
  if (config.id != config.css.basicPrefix) {
    config.css.basic = config.css.basic.replace(
      new RegExp('#' + config.css.basicPrefix, 'gm'), '#' + config.id);
    config.css.basicPrefix = config.id;
  }
}

GM_configStruct.prototype = {
  // Support old method of initalizing
  init: function() {
    GM_configInit(this, arguments);
    this.onInit();
  },

  // call GM_config.open() from your script to open the menu
  open: function () {
    // Die if the menu is already open on this page
    // You can have multiple instances but you can't open the same instance twice
    var match = document.getElementById(this.id);
    if (match && (match.tagName == "IFRAME" || match.childNodes.length > 0)) return;

    // Sometimes "this" gets overwritten so create an alias
    var config = this;

    // Function to build the mighty config window :)
    function buildConfigWin (body, head) {
      var create = config.create,
          fields = config.fields,
          configId = config.id,
          bodyWrapper = create('div', {id: configId + '_wrapper'});

      // Append the style which is our default style plus the user style
      head.appendChild(
        create('style', {
        type: 'text/css',
        textContent: config.css.basic + config.css.stylish
      }));

      // Add header and title
      bodyWrapper.appendChild(create('div', {
        id: configId + '_header',
        className: 'config_header block center'
      }, config.title));

      // Append elements
      var section = bodyWrapper,
          secNum = 0; // Section count

      // loop through fields
      for (var id in fields) {
        var field = fields[id],
            settings = field.settings;

        if (settings.section) { // the start of a new section
          section = bodyWrapper.appendChild(create('div', {
              className: 'section_header_holder',
              id: configId + '_section_' + secNum
            }));

          if (Object.prototype.toString.call(settings.section) !== '[object Array]')
            settings.section = [settings.section];

          if (settings.section[0])
            section.appendChild(create('div', {
              className: 'section_header center',
              id: configId + '_section_header_' + secNum
            }, settings.section[0]));

          if (settings.section[1])
            section.appendChild(create('p', {
              className: 'section_desc center',
              id: configId + '_section_desc_' + secNum
            }, settings.section[1]));
          ++secNum;
        }

        // Create field elements and append to current section
        section.appendChild((field.wrapper = field.toNode(configId)));
      }

      // Add save and close buttons
      bodyWrapper.appendChild(create('div',
        {id: configId + '_buttons_holder'},

        create('button', {
          id: configId + '_saveBtn',
          textContent: 'Save',
          title: 'Save settings',
          className: 'saveclose_buttons',
          onclick: function () { config.save() }
        }),

        create('button', {
          id: configId + '_closeBtn',
          textContent: 'Close',
          title: 'Close window',
          className: 'saveclose_buttons',
          onclick: function () { config.close() }
        }),

        create('div',
          {className: 'reset_holder block'},

          // Reset link
          create('a', {
            id: configId + '_resetLink',
            textContent: 'Reset to defaults',
            href: '#',
            title: 'Reset fields to default values',
            className: 'reset',
            onclick: function(e) { e.preventDefault(); config.reset() }
          })
      )));

      body.appendChild(bodyWrapper); // Paint everything to window at once
      config.center(); // Show and center iframe
      window.addEventListener('resize', config.center, false); // Center frame on resize

      // Call the open() callback function
      config.onOpen(config.frame.contentDocument || config.frame.ownerDocument,
                    config.frame.contentWindow || window,
                    config.frame);

      // Close frame on window close
      window.addEventListener('beforeunload', function () {
          config.close();
      }, false);

      // Now that everything is loaded, make it visible
      config.frame.style.display = "block";
      config.isOpen = true;
    }

    // Change this in the onOpen callback using this.frame.setAttribute('style', '')
    var defaultStyle = 'bottom: auto; border: 1px solid #000; display: none; height: 75%;'
      + ' left: 0; margin: 0; max-height: 95%; max-width: 95%; opacity: 0;'
      + ' overflow: auto; padding: 0; position: fixed; right: auto; top: 0;'
      + ' width: 75%; z-index: 9999;';

    // Either use the element passed to init() or create an iframe
    if (this.frame) {
      this.frame.id = this.id; // Allows for prefixing styles with the config id
      this.frame.setAttribute('style', defaultStyle);
      buildConfigWin(this.frame, this.frame.ownerDocument.getElementsByTagName('head')[0]);
    } else {
      // Create frame
      document.body.appendChild((this.frame = this.create('iframe', {
        id: this.id,
        style: defaultStyle
      })));

      // In WebKit src can't be set until it is added to the page
      this.frame.src = 'about:blank';
      // we wait for the iframe to load before we can modify it
      this.frame.addEventListener('load', function(e) {
          var frame = config.frame;
          var body = frame.contentDocument.getElementsByTagName('body')[0];
          body.id = config.id; // Allows for prefixing styles with the config id
          buildConfigWin(body, frame.contentDocument.getElementsByTagName('head')[0]);
      }, false);
    }
  },

  save: function () {
    var forgotten = this.write();
    this.onSave(forgotten); // Call the save() callback function
  },

  close: function() {
    // If frame is an iframe then remove it
    if (this.frame.contentDocument) {
      this.remove(this.frame);
      this.frame = null;
    } else { // else wipe its content
      this.frame.innerHTML = "";
      this.frame.style.display = "none";
    }

    // Null out all the fields so we don't leak memory
    var fields = this.fields;
    for (var id in fields) {
      var field = fields[id];
      field.wrapper = null;
      field.node = null;
    }

    this.onClose(); //  Call the close() callback function
    this.isOpen = false;
  },

  set: function (name, val) {
    this.fields[name].value = val;
  },

  get: function (name) {
    return this.fields[name].value;
  },

  write: function (store, obj) {
    if (!obj) {
      var values = {},
          forgotten = {},
          fields = this.fields;

      for (var id in fields) {
        var field = fields[id];
        var value = field.toValue();

        if (field.save) {
          if (value != null) {
            values[id] = value;
            field.value = value;
          } else
            values[id] = field.value;
        } else
          forgotten[id] = value;
      }
    }
    try {
      this.setValue(store || this.id, this.stringify(obj || values));
    } catch(e) {
      this.log("GM_config failed to save settings!");
    }

    return forgotten;
  },

  read: function (store) {
    try {
      var rval = this.parser(this.getValue(store || this.id, '{}'));
    } catch(e) {
      this.log("GM_config failed to read saved settings!");
      var rval = {};
    }
    return rval;
  },

  reset: function () {
    var fields = this.fields;

    // Reset all the fields
    for (var id in fields) fields[id].reset();

    this.onReset(); // Call the reset() callback function
  },

  create: function () {
    switch(arguments.length) {
      case 1:
        var A = document.createTextNode(arguments[0]);
        break;
      default:
        var A = document.createElement(arguments[0]),
            B = arguments[1];
        for (var b in B) {
          if (b.indexOf("on") == 0)
            A.addEventListener(b.substring(2), B[b], false);
          else if (",style,accesskey,id,name,src,href,which,for".indexOf("," +
                   b.toLowerCase()) != -1)
            A.setAttribute(b, B[b]);
          else
            A[b] = B[b];
        }
        if (typeof arguments[2] == "string")
          A.innerHTML = arguments[2];
        else
          for (var i = 2, len = arguments.length; i < len; ++i)
            A.appendChild(arguments[i]);
    }
    return A;
  },

  center: function () {
    var node = this.frame;
    if (!node) return;
    var style = node.style,
        beforeOpacity = style.opacity;
    if (style.display == 'none') style.opacity = '0';
    style.display = '';
    style.top = Math.floor((window.innerHeight / 2) - (node.offsetHeight / 2)) + 'px';
    style.left = Math.floor((window.innerWidth / 2) - (node.offsetWidth / 2)) + 'px';
    style.opacity = '1';
  },

  remove: function (el) {
    if (el && el.parentNode) el.parentNode.removeChild(el);
  }
};

// Define a bunch of API stuff
(function() {
  var isGM = typeof GM_getValue != 'undefined' &&
             typeof GM_getValue('a', 'b') != 'undefined',
      setValue, getValue, stringify, parser;

  // Define value storing and reading API
  if (!isGM) {
    setValue = function (name, value) {
      return localStorage.setItem(name, value);
    };
    getValue = function(name, def){
      var s = localStorage.getItem(name);
      return s == null ? def : s
    };

    // We only support JSON parser outside GM
    stringify = JSON.stringify;
    parser = JSON.parse;
  } else {
    setValue = GM_setValue;
    getValue = GM_getValue;
    stringify = typeof JSON == "undefined" ?
      function(obj) {
        return obj.toSource();
    } : JSON.stringify;
    parser = typeof JSON == "undefined" ?
      function(jsonData) {
        return (new Function('return ' + jsonData + ';'))();
    } : JSON.parse;
  }

  GM_configStruct.prototype.isGM = isGM;
  GM_configStruct.prototype.setValue = setValue;
  GM_configStruct.prototype.getValue = getValue;
  GM_configStruct.prototype.stringify = stringify;
  GM_configStruct.prototype.parser = parser;
  GM_configStruct.prototype.log =  window.console ?
    console.log : (isGM && typeof GM_log != 'undefined' ?
      GM_log : (window.opera ?
        opera.postError : function(){ /* no logging */ }
  ));
})();

function GM_configDefaultValue(type, options) {
  var value;

  if (type.indexOf('unsigned ') == 0)
    type = type.substring(9);

  switch (type) {
    case 'radio': case 'select':
      value = options[0];
      break;
    case 'checkbox':
      value = false;
      break;
    case 'int': case 'integer':
    case 'float': case 'number':
      value = 0;
      break;
    default:
      value = '';
  }

  return value;
}

function GM_configField(settings, stored, id, customType) {
  // Store the field's settings
  this.settings = settings;
  this.id = id;
  this.node = null;
  this.wrapper = null;
  this.save = typeof settings.save == "undefined" ? true : settings.save;

  // Buttons are static and don't have a stored value
  if (settings.type == "button") this.save = false;

  // if a default value wasn't passed through init() then
  //   if the type is custom use its default value
  //   else use default value for type
  // else use the default value passed through init()
  this['default'] = typeof settings['default'] == "undefined" ?
    customType ?
      customType['default']
      : GM_configDefaultValue(settings.type, settings.options)
    : settings['default'];

  // Store the field's value
  this.value = typeof stored == "undefined" ? this['default'] : stored;

  // Setup methods for a custom type
  if (customType) {
    this.toNode = customType.toNode;
    this.toValue = customType.toValue;
    this.reset = customType.reset;
  }
}

GM_configField.prototype = {
  create: GM_configStruct.prototype.create,

  toNode: function(configId) {
    var field = this.settings,
        value = this.value,
        options = field.options,
        type = field.type,
        id = this.id,
        labelPos = field.labelPos,
        create = this.create;

    function addLabel(pos, labelEl, parentNode, beforeEl) {
      if (!beforeEl) beforeEl = parentNode.firstChild;
      switch (pos) {
        case 'right': case 'below':
          if (pos == 'below')
            parentNode.appendChild(create('br', {}));
          parentNode.appendChild(labelEl);
          break;
        default:
          if (pos == 'above')
            parentNode.insertBefore(create('br', {}), beforeEl);
          parentNode.insertBefore(labelEl, beforeEl);
      }
    }

    var retNode = create('div', { className: 'config_var',
          id: configId + '_' + id + '_var',
          title: field.title || '' }),
        firstProp;

    // Retrieve the first prop
    for (var i in field) { firstProp = i; break; }

    var label = field.label && type != "button" ?
      create('label', {
        id: configId + '_' + id + '_field_label',
        for: configId + '_field_' + id,
        className: 'field_label'
      }, field.label) : null;

    switch (type) {
      case 'textarea':
        retNode.appendChild((this.node = create('textarea', {
          innerHTML: value,
          id: configId + '_field_' + id,
          className: 'block',
          cols: (field.cols ? field.cols : 20),
          rows: (field.rows ? field.rows : 2)
        })));
        break;
      case 'radio':
        var wrap = create('div', {
          id: configId + '_field_' + id
        });
        this.node = wrap;

        for (var i = 0, len = options.length; i < len; ++i) {
          var radLabel = create('label', {
            className: 'radio_label'
          }, options[i]);

          var rad = wrap.appendChild(create('input', {
            value: options[i],
            type: 'radio',
            name: id,
            checked: options[i] == value
          }));

          var radLabelPos = labelPos &&
            (labelPos == 'left' || labelPos == 'right') ?
            labelPos : firstProp == 'options' ? 'left' : 'right';

          addLabel(radLabelPos, radLabel, wrap, rad);
        }

        retNode.appendChild(wrap);
        break;
      case 'select':
        var wrap = create('select', {
          id: configId + '_field_' + id
        });
        this.node = wrap;

        for (var i = 0, len = options.length; i < len; ++i) {
          var option = options[i];
          wrap.appendChild(create('option', {
            value: option,
            selected: option == value
          }, option));
        }

        retNode.appendChild(wrap);
        break;
      default: // fields using input elements
        var props = {
          id: configId + '_field_' + id,
          type: type,
          value: type == 'button' ? field.label : value
        };

        switch (type) {
          case 'checkbox':
            props.checked = value;
            break;
          case 'button':
            props.size = field.size ? field.size : 25;
            if (field.script) field.click = field.script;
            if (field.click) props.onclick = field.click;
            break;
          case 'hidden':
            break;
          default:
            // type = text, int, or float
            props.type = 'text';
            props.size = field.size ? field.size : 25;
        }

        retNode.appendChild((this.node = create('input', props)));
    }

    if (label) {
      // If the label is passed first, insert it before the field
      // else insert it after
      if (!labelPos)
        labelPos = firstProp == "label" || type == "radio" ?
          "left" : "right";

      addLabel(labelPos, label, retNode);
    }

    return retNode;
  },

  toValue: function() {
    var node = this.node,
        field = this.settings,
        type = field.type,
        unsigned = false,
        rval = null;

    if (!node) return rval;

    if (type.indexOf('unsigned ') == 0) {
      type = type.substring(9);
      unsigned = true;
    }

    switch (type) {
      case 'checkbox':
        rval = node.checked;
        break;
      case 'select':
        rval = node[node.selectedIndex].value;
        break;
      case 'radio':
        var radios = node.getElementsByTagName('input');
        for (var i = 0, len = radios.length; i < len; ++i)
          if (radios[i].checked)
            rval = radios[i].value;
        break;
      case 'button':
        break;
      case 'int': case 'integer':
      case 'float': case 'number':
        var num = Number(node.value);
        var warn = 'Field labeled "' + field.label + '" expects a' +
          (unsigned ? ' positive ' : 'n ') + 'integer value';

        if (isNaN(num) || (type.substr(0, 3) == 'int' &&
            Math.ceil(num) != Math.floor(num)) ||
            (unsigned && num < 0)) {
          alert(warn + '.');
          return null;
        }

        if (!this._checkNumberRange(num, warn))
          return null;
        rval = num;
        break;
      default:
        rval = node.value;
        break;
    }

    return rval; // value read successfully
  },

  reset: function() {
    var node = this.node,
        field = this.settings,
        type = field.type;

    if (!node) return;

    switch (type) {
      case 'checkbox':
        node.checked = this['default'];
        break;
      case 'select':
        for (var i = 0, len = node.options.length; i < len; ++i)
          if (node.options[i].textContent == this['default'])
            node.selectedIndex = i;
        break;
      case 'radio':
        var radios = node.getElementsByTagName('input');
        for (var i = 0, len = radios.length; i < len; ++i)
          if (radios[i].value == this['default'])
            radios[i].checked = true;
        break;
      case 'button' :
        break;
      default:
        node.value = this['default'];
        break;
      }
  },

  remove: function(el) {
    GM_configStruct.prototype.remove(el || this.wrapper);
    this.wrapper = null;
    this.node = null;
  },

  reload: function() {
    var wrapper = this.wrapper;
    if (wrapper) {
      var fieldParent = wrapper.parentNode;
      fieldParent.insertBefore((this.wrapper = this.toNode()), wrapper);
      this.remove(wrapper);
    }
  },

  _checkNumberRange: function(num, warn) {
    var field = this.settings;
    if (typeof field.min == "number" && num < field.min) {
      alert(warn + ' greater than or equal to ' + field.min + '.');
      return null;
    }

    if (typeof field.max == "number" && num > field.max) {
      alert(warn + ' less than or equal to ' + field.max + '.');
      return null;
    }
    return true;
  }
};

// Create default instance of GM_config
var GM_config = new GM_configStruct();