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GitHub - Make PRs easier to diff

Add some js buttons to diffs

当前为 2016-01-29 提交的版本,查看 最新版本

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name         GitHub - Make PRs easier to diff
// @namespace    https://github.com/drKnoxy/
// @version      1.1
// @description  Add some js buttons to diffs
// @author       DrKnoxy
// @include      https://github.com/*
// @grant        none
// ==/UserScript==

/**
 * Internal Application Logic
 */
var tool = (function() {
    // Globals and exports
    ////////////////////////////////////

    // Prep global variables
    var isWhitespaceVisible = _isWhitespaceVisible();

    /**
     * The collapse headers feature
     */
    var collapse = (function(){
        var toggleId = 'js-blob-toggle';
        var blobSelector = '.blob-wrapper, .render-wrapper, .file-header + .empty';
        var isAllVisible = true;
        
        return {
            addElement: addElement,
            monitor: monitor
        };

        //////////////////////

        function monitor() {
            _monitorHeader();
            _monitorToggle();
        }

        function _monitorHeader() {
            $(document).on('click', '.file-header', function(e) {
                $(this).next(blobSelector).toggle();
            });
        }

        function _monitorToggle() {
            $(document).on('click', '#' + toggleId, function(e) {
                e.preventDefault();

                // can't use toggle, because we need to obey our state
                // not the items state
                if (isAllVisible) {
                    $(this).addClass('selected');
                    $(blobSelector).hide();
                } else {
                    $(this).removeClass('selected');
                    $(blobSelector).show();
                }

                isAllVisible = !isAllVisible;
            });
        }

        function addElement() {
            var toggle = {
                id: toggleId,
                label: 'Collapse'
            };

            _addToggle(toggle);
        }

    })();

    /**
     * The hide whitespace features
     */
    var whitespace = (function(isWhitespaceVisible){
        var toggleId = 'js-whitespace-toggle';
        var isWhitespaceVisible = isWhitespaceVisible;

        return {
            addElement: addElement,
            monitor: monitor
        };

        //////////////////////

        function monitor() {
            $(document).on('click', '#' + toggleId, function(e) {
                e.preventDefault();

                // blow away the whole search query...
                window.location.search = isWhitespaceVisible ? '' : 'w=1';
            });
        }

        function addElement() {
            var toggle = {
                id: toggleId,
                label: 'Ignore Whitespace',
                isSelected: isWhitespaceVisible
            };

            _addToggle(toggle);
        }

    })(isWhitespaceVisible);

    var betterTextarea = (function(){
        var tabInsertCharacter = "    ";

        return {
            init: init
        };

        //////////////////////////

        function init() {
            useTabForIndenting();
        }

        function useTabForIndenting() {
            $(document).on('keydown', 'textarea', function(e) {
                // tab was pressed
                if (e.keyCode === 9) {
                    // get caret position/selection
                    var start = this.selectionStart;
                    var end = this.selectionEnd;

                    var $this = $(this);
                    var value = $this.val();

                    var newVal = [
                        value.substring(0, start),
                        tabInsertCharacter,
                        value.substring(end)
                    ].join('');

                    $this.val(newVal);

                    // put caret at right position
                    this.selectionStart = this.selectionEnd = start + tabInsertCharacter.length;

                    // prevent the focus loss
                    e.preventDefault();
                }
            });
        }

    })();

    /**
     * Public methods
     */
    return {
        init: init,
        addElements: addElements
    }

    // Implementation logic
    /////////////////////

    /**
     * call me once
     */
    function init() {
        // Watch for events
        collapse.monitor();
        whitespace.monitor();
        betterTextarea.init();
    }

    /**
     * call me on pjax route change, 
     * or if you are nervous that ajax happened
     */
    function addElements() {
        collapse.addElement();
        whitespace.addElement();
    }

    /**
     * Add a button to the page
     * @param options {id, label, isSelected}
     */
    function _addToggle(options) {
        var toggleTemplate = '<a id="{{id}}" class="{{cssClass}}" style="margin-left: 4px;">{{label}}</a>';

        // Make sure it isn't on the page already
        if (!$('#' + options.id).length) {
            options.cssClass = 'btn btn-sm right';
            if (options.isSelected) {
                options.cssClass += ' selected';
            }
            tmpl = _render(toggleTemplate, options);

            $('#toc .btn-group').before(tmpl);
        }
    }

    function _isWhitespaceVisible() {
        var search = _getSearchObject();
        return (search.w && parseInt(search.w, 10) == 1);

        function _getSearchObject() {
            var search = {};
            if (window.location.search) {
                window.location.search.replace('?', '').split('&').forEach(function(el) {
                    var group = el.split('=');
                    var prop = group[0];
                    var val = group[1] || '';
                    search[prop] = val;
                });
            }

            return search;
        }
    }

    /**
     * Simple template rendering
     * double curly brace syntax {{id}} or {{ id }}
     * 
     * @param  {string} tmpl
     * @param  {obj}    data  [description]
     * @return {string}
     */
    function _render(tmpl, data) {
        var curlyBraceRegex = /{{([^}}]+)}}/g
        var finds = tmpl.match(curlyBraceRegex);

        finds.forEach(function(curlyProp) {
            var prop = curlyProp.replace('{{', '').replace('}}','').trim();

            if (data[prop]){
                tmpl = tmpl.split(curlyProp).join(data[prop]);
            }
        });

        return tmpl;
    }

})();

/**
 * Applying our tool to github
 */
$(function() {

    tool.init();
    tool.addElements();

    // Add elements on page change
    $(document).on('pjax:complete pjax:popstate', function(e) {
        tool.addElements();
    });
});