User:魔琴/gadgets/edit-conflict-detector.js

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// Global version: [[:meta:User:魔琴/edit-conflict-detector.js]]

mw.loader.using(['mediawiki.util', 'mediawiki.api']).done( function() {
	if(!/[&?](ve)?action=edit/.test(window.location.search)) // Not edit mode
		return;
	var newrev ;
	var rev = mw.config.get('wgCurRevisionId');
	if( rev === 0) // Page does not exist
		return;
	var warned = 0;
	var changed = 0;
	var warn = {};
	var pagename = mw.config.get('wgPageName');
	var API = new mw.Api();
	var newrevs = {};
	
$.when(mw.loader.using('mediawiki.jqueryMsg'), $.ready)
    .then(function () {
    	warn = {
    		edit: mw.libs.HanAssist.localize( { hans: '检测到编辑冲突！', hant: '檢測到編輯衝突！' } ),
    		gone: mw.message('Deletedwhileediting').text()
    	};
    	setInterval(checkEC, 5000);
    	
	});

function checkEC () {
	API.get({
		'action': 'query',
		'format': 'json',
		'prop': 'revisions',
		'titles': pagename,
		'rvprop': 'ids'
	}).done(function(data){
        var pages = data.query.pages;
    	var id = Object.keys(pages)[0];
    	var revision = pages[id].revisions[0];
	    var parameters = {
	        diff: revision.revid,
	        oldId: revision.parentid
	    };
	    newrev = parameters.diff;
		if ( newrev > rev ) {
			alertEC(warn.edit);
		} else if (newrev===0){
			if ( warned!==3 ) { warned = 1; }
			alertEC(warn.gone);
		}
	});
}

function alertEC(warntype) {
	if (newrevs[newrev] !== 1) {
		mw.notify('Sensed edit conflict...');
	}
	promise = API.post({
		action: 'parse',
		contentmodel: 'wikitext',
		text: '&nbsp;' + warntype + '&nbsp;',
		title: pagename,
		prop: 'text',
		formatversion: '2'
	}).done(function(data){
		
		if (newrevs[newrev] !== 1) {
			newrevs[newrev] = 1;
			mw.notify($(`<div>${data.parse.text}</div>`));
		}
		if (changed===0) { // 变色
			$("#wpSave").css("background-color", "#b33");
			$("#wpSaveWidget").css("background-color", "#b33");
			$(".ve-ui-toolbar-saveButton").css("background-color", "#b33");
		}
		
		if (warned<2){ // 只有第一次是编辑冲突，或首次遇到页面删除时才提醒
			$("#wpSaveWidget").append('<div style="color:#b33;background-color:#ffd;font-weight:bold">' + data.parse.text + '</div>');
			$(".ve-ui-toolbar-saveButton").append('<div style="color:#b33;background-color:#ffd">' + data.parse.text + '</div>');
		}
		
	}).fail(function(error){
		mw.notify(warntype);
		console.log('[Edit-conflict-detector] Failed: '+error);
	}).always(function(){
		change = 1;
		warned = changed === 0 ? 2 : warned;
		warned = warned === 1 ? 3 : warned;
	});
}
}(jQuery, window, document));