GM_config_lz-string

Refactor GM_config, this version uses lz-string to access data for a Library script
当前为 2018-10-02 提交的版本，查看最新版本。
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.gf.qytechs.cn/scripts/372760/633378/GM_config_lz-string.js
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换行
// ==UserScript==
// @namespace     http://tampermonkey.net/
// @exclude       *
 
// ==UserLibrary==
// @name          GM_config_lz-string
// @description   Refactor GM_config, this version uses lz-string to access data for a Library script
// @author        avan
// @license       MIT
// @version       0.3
 
// ==/UserScript==
 
// ==/UserLibrary==
 
GM_configStruct.prototype.read = function (store) {
	var rval, cKey, dValue;
	try {
	    cKey = LZString.compressToUTF16(store || this.id);
		dValue = LZString.decompressFromUTF16(this.getValue(cKey, '{}'));
		rval = this.parser(dValue);
	} catch(e) {
		this.log("GM_config failed to read saved settings!");
		rval = {};
	}
	return rval;
};
 
GM_configStruct.prototype.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 {
	    var cKey = LZString.compressToUTF16(store || this.id),
		    cValue = LZString.compressToUTF16(this.stringify(obj || values));
		this.setValue(cKey, cValue);
	} catch(e) {
		this.log("GM_config failed to save settings!");
	}
 
	return forgotten;
};
GM_configField.prototype.toNode = function() {
	var field = this.settings,
		value = this.value,
		options = field.options,
		type = field.type,
		className = field.class,
		style = field.style,
		id = this.id,
		configId = this.configId,
		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' + (className ? " " + className : ''),
		id: configId + '_' + id + '_var',
		title: field.title || '',
		style: style || '',
		
	}),
		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;
				case 'password':
					props.size = field.size ? field.size : 25;
					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;
};
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