michael@0: /* vim:set ts=2 sw=2 sts=2 et: */
michael@0: /*
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/
michael@0:  *
michael@0:  * Contributor(s):
michael@0:  *   Mihai Șucan <mihai.sucan@gmail.com>
michael@0:  */
michael@0: 
michael@0: let hud, testDriver;
michael@0: 
michael@0: function testNext() {
michael@0:   testDriver.next();
michael@0: }
michael@0: 
michael@0: function testGen() {
michael@0:   hud.jsterm.clearOutput();
michael@0: 
michael@0:   let outputNode = hud.outputNode;
michael@0: 
michael@0:   Services.prefs.setIntPref("devtools.hud.loglimit.console", 140);
michael@0:   let scrollBoxElement = outputNode.parentNode;
michael@0: 
michael@0:   for (let i = 0; i < 150; i++) {
michael@0:     content.console.log("test message " + i);
michael@0:   }
michael@0: 
michael@0:   waitForMessages({
michael@0:     webconsole: hud,
michael@0:     messages: [{
michael@0:       text: "test message 149",
michael@0:       category: CATEGORY_WEBDEV,
michael@0:       severity: SEVERITY_LOG,
michael@0:     }],
michael@0:   }).then(testNext);
michael@0: 
michael@0:   yield undefined;
michael@0: 
michael@0:   let oldScrollTop = scrollBoxElement.scrollTop;
michael@0:   isnot(oldScrollTop, 0, "scroll location is not at the top");
michael@0: 
michael@0:   let firstNode = outputNode.firstChild;
michael@0:   ok(firstNode, "found the first message");
michael@0: 
michael@0:   let msgNode = outputNode.children[80];
michael@0:   ok(msgNode, "found the 80th message");
michael@0: 
michael@0:   // scroll to the middle message node
michael@0:   msgNode.scrollIntoView(false);
michael@0: 
michael@0:   isnot(scrollBoxElement.scrollTop, oldScrollTop,
michael@0:         "scroll location updated (scrolled to message)");
michael@0: 
michael@0:   oldScrollTop = scrollBoxElement.scrollTop;
michael@0: 
michael@0:   // add a message
michael@0:   content.console.log("hello world");
michael@0: 
michael@0:   waitForMessages({
michael@0:     webconsole: hud,
michael@0:     messages: [{
michael@0:       text: "hello world",
michael@0:       category: CATEGORY_WEBDEV,
michael@0:       severity: SEVERITY_LOG,
michael@0:     }],
michael@0:   }).then(testNext);
michael@0: 
michael@0:   yield undefined;
michael@0: 
michael@0:   // Scroll location needs to change, because one message is also removed, and
michael@0:   // we need to scroll a bit towards the top, to keep the current view in sync.
michael@0:   isnot(scrollBoxElement.scrollTop, oldScrollTop,
michael@0:         "scroll location updated (added a message)");
michael@0: 
michael@0:   isnot(outputNode.firstChild, firstNode,
michael@0:         "first message removed");
michael@0: 
michael@0:   Services.prefs.clearUserPref("devtools.hud.loglimit.console");
michael@0: 
michael@0:   hud = testDriver = null;
michael@0:   finishTest();
michael@0: 
michael@0:   yield undefined;
michael@0: }
michael@0: 
michael@0: function test() {
michael@0:   addTab("data:text/html;charset=utf-8,Web Console test for bug 613642: maintain scroll with pruning of old messages");
michael@0:   browser.addEventListener("load", function tabLoad(aEvent) {
michael@0:     browser.removeEventListener(aEvent.type, tabLoad, true);
michael@0: 
michael@0:     openConsole(null, function(aHud) {
michael@0:       hud = aHud;
michael@0:       testDriver = testGen();
michael@0:       testDriver.next();
michael@0:     });
michael@0:   }, true);
michael@0: }