Make the parent div as big as its child - javascript

I got some div in a parent div. The parent div should only be as big as its child divs.
So this is the current view
function record(id, title, description, content, dateOfCreation) { // the object
this.id = id;
this.title = title;
this.description = description;
this.content = content;
this.dateOfCreation = dateOfCreation;
this.lastEdited = dateOfCreation;
}
function init(){
var elements = []; // all records get stored here
for (var i = 0; i < 3; i++) { // create some objects
elements.push(new record(
i,
"title " + i,
"description " + i,
"content " + i,
"date " + i));
}
$(elements).each(function (index, currentRecord) { // create the div containers
var recordContainer = $("<div></div>");
recordContainer.addClass("recordContainer");
$(document.body).append(recordContainer);
recordContainer.append($("<div>" + currentRecord.title + "</div>"));
recordContainer.append($("<div>" + currentRecord.description + "</div>"));
recordContainer.append($("<div>" + currentRecord.dateOfCreation + "</div>"));
recordContainer.append($("<div>" + currentRecord.lastEdited + "</div>"));
});
}
init(); // call the routine
.recordContainer{
margin: 10px;
border: solid;
border-width: 1px;
border-radius: 2px;
border-color: #e8e9e9;
box-shadow: 1px 1px 1px #999999;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
So I want recordContainer having a relative size. When looking for some information, I tried out adding display: inline; to "recordContainer". But then doing this, the container gets weird (?). You need to try it out, then you will see what I mean.
How can I achieve my desired div?

If you need them to be narrow but remain stacked vertically, use display: table, see the snippet below.
If you need them to be narrow and go onto the same line (and possibly wrap if that no longer fits), use display: inline-block.
function record(id, title, description, content, dateOfCreation) {
this.id = id;
this.title = title;
this.description = description;
this.content = content;
this.dateOfCreation = dateOfCreation;
this.lastEdited = dateOfCreation;
}
function init() {
var elements = []; // all records get stored here
for (var i = 0; i < 3; i++) { // create some objects
elements.push(new record(i, "title " + i, "description " + i, "content " + i, "date " + i));
}
$(elements).each(function(index, currentRecord) {
var recordContainer = $("<div></div>");
recordContainer.addClass("recordContainer");
$(document.body).append(recordContainer);
recordContainer.append($("<div>" + currentRecord.title + "</div>"));
recordContainer.append($("<div>" + currentRecord.description + "</div>"));
recordContainer.append($("<div>" + currentRecord.dateOfCreation + "</div>"));
recordContainer.append($("<div>" + currentRecord.lastEdited + "</div>"));
});
}
init(); // call the routine
.recordContainer {
margin: 10px;
border: solid;
border-width: 1px;
border-radius: 2px;
border-color: #e8e9e9;
box-shadow: 1px 1px 1px #999999;
display: table;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

I made some changes to improve semantics and performance as well. The problem is that the element "DIV" is by default a block element and therefore occupy the entire horizontal space.
I hope this solution helps you.
function record(id, title, description, content, dateOfCreation) { // the object
this.id = id;
this.title = title;
this.description = description;
this.content = content;
this.dateOfCreation = dateOfCreation;
this.lastEdited = dateOfCreation;
}
function init(){
var elements = []; // all records get stored here
for (var i = 0; i < 3; i++) { // create some objects
elements.push(new record(
i,
"title " + i,
"description " + i,
"content " + i,
"date " + i));
}
$(elements).each(function (index, currentRecord) { // create the div containers
var recordContainer = $("<div class='recordContainer'><div class='container container-" + index + "'></div></div>");
$(document.body).append(recordContainer);
$(".container-" + index).append("<div>" +
"<p>" + currentRecord.title + "</p>" +
"<p>" + currentRecord.description + "</p>" +
"<p>" + currentRecord.dateOfCreation + "</p>" +
"<p>" + currentRecord.lastEdited + "</p></div>");
});
}
init(); // call the routine
.recordContainer{
display: inline-block;
margin: 0;
}
.container{
margin: 0 .5em;
padding: .5em;
border: 1px solid #cccccc;
-webkit-border-radius: 2px;
-moz-border-radius: 2px;
border-radius: 2px;
-webkit-box-shadow: 1px 1px 10px #ccc;
-moz-box-shadow: 1px 1px 10px #ccc;
box-shadow: 1px 1px 10px #ccc;
}
.container p {
text-align: center;
}
.container p:nth-child(odd){
background: #eee;
margin: 0;
padding: .3em .5em;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Related

How to successfully execute a callback on an async method

I am currently trying to return a value from a function that contains an async function and I'm stuck.
I am currently working with SharePoint 2013 JSOM to extract the email address from a Person column. I have found a nice function that does this and I elected to pass the userID into the function.
The function itself contains console.log and outputs the expected result, however, I need those results up where I called the function from in the first place so I found that I need to use a callback. I cannot extract a variable from the calling method.
var t = oListItem.get_item('ElementContactFullName').get_lookupId();
var q = getEmail(t, function(returnedValue){});
function getEmail(userId, callback) {
var x = [];
var context = new SP.ClientContext();
var web = context.get_web();
var user = web.get_siteUsers().getById(userId);
context.load(user);
context.executeQueryAsync(function() {
//console.log(user.get_email());
var y = user.get_email();
x.push(y);
}
, function() {
console.log("error");
});
callback(x);
}
What I want is q to equal the email address so I can use it elsewhere in the calling function.
What I get is "Undefined" no matter what I try.
I can place console.log in function(returnedValue){}) but that still doesn't let me get at the variable. Not done enough JScript to understand the very complex dicussions on the proposed duplicate.
function getEUEmail(userId, JT, flag, callback) {
var x = [];
var contextEU = new SP.ClientContext();
var web = contextEU.get_web();
var user = web.get_siteUsers().getById(userId);
contextEU.load(user);
contextEU.executeQueryAsync(function() {
//console.log(user.get_email());
var y = "<div class='tablewrapper'>" +
"<div class='table'>" +
"<div class='row'>" +
"<div class='rowspanned cell'>" +
' <img class="contacts" src="' + _spPageContextInfo.webServerRelativeUrl + '/_layouts/15/userphoto.aspx?size=M&accountname='+ user.get_email() +'"/>' +
"</div>" +
"<div class='cell'>" +
user.get_title() +
"</div>" +
"</div>" +
"<div class='row'>" +
"<div class='empty cell'></div>" +
"<div class='cell'>" +
JT +
"<div class='cell'>" +
' <img class="flag" src="' + window.location.protocol + "//" + window.location.host + '/SiteAssets/Images/'+ flag +'.png"/>' +
//http://staging.intranet.ent.sys.element.com/SiteAssets/Images/EU.png
"</div>" +
"</div>" +
"</div>" +
"</div>" +
"</div>"
x.push(y);
callback(x);
}
Then to use it
getEUEmail(t,u, v, function(returnedValueEU) {
//console.log(returnedValue[0])
$("#divListItemsEU").append(
"<style type='text/css'> .tablewrapper { position: relative; box-sizing: border-box; height:72px} .table {display: table; } .row { display: table-row; padding: 1px; } .cell { display: table-cell; border: none solid red; padding: 3px;} .cell.empty { border: none; width: 75px; } .cell.rowspanned { position: absolute; top: 0; bottom: 0; width: 75px; display: block; margin: 1px;} .contacts{ width: 72px; height: 72px;} .flag { width: 30px; height: 20px; }</style> " +
"" + returnedValueEU[0] +
'<br />');
});
$("#divListItemsEU").html(listEUItemInfoEU);
}
I ended up passing all the values into the getEmail function, building the HTML then worked out how to leverage the callback with some help. Probably not correct, efficient or elegant but it works. Thanks

Move table value from to other table and back

I have this code below that moves the value from Random Fruits to Green Fruits but the problem is i'm trying to make it so that after i move the value into Green Fruits i will be also able to move it back to the Random Fruits Table but i keep getting this error message "message": "Uncaught TypeError: Cannot read property 'indexOf' of undefined", am i doing something wrong with the code below? Any help would be greatly appreciated thanks!
var obj = {};
var obj2 = {};
var key = "Red Fruits";
obj[key] = ['Apple', 'Cherry', 'Strawberry'];
var myArray = [];
myArray.push(obj);
var key2 = "Green Fruits";
obj[key2] = ['Watermelon', 'Durian', 'Avacado'];
var myArray2 = [];
myArray2.push(obj);
var key3 = "Random Fruits";
obj2[key3] = ['Kiwi', 'Pomegranate', 'Honeydew', 'Plum'];
var myArray3 = [];
myArray3.push(obj2);
function redraw(obj) {
var $header = $("<tr>"),
cols = 0,
bodyString = "";
$.each(obj, function(key, values) {
cols = Math.max(cols, values.length);
$header.append($('<th class="total_count_' + key.replace(/\s/g, '_') + '"/>').text(key + ": " + values.length));
});
for (var i = 0; i < cols; i++) {
bodyString += '<tr>';
$.each(obj, function(key, values) {
bodyString += '<td>' +
(values[i] ? values[i] : "") +
'</td>';
});
bodyString += '</tr>';
}
$('.fruitsclass thead').html($header);
$('.fruitsclass tbody').html(bodyString);
var bodyString = '';
var headString = '';
$.each(obj2[key3], function(index) {
bodyString += ('<tr><td>' + obj2[key3][index] + '</td></tr>');
});
headString += ('<tr><th>' + 'Random Fruits' + '</th></tr>');
$('.fruityclass tbody').html(bodyString);
$('.fruityclass thead').html(headString);
}
function addNewRow(fruitName) {
var tds = '<tr><td class="new-row">' + +'</td></tr>';
}
function listener(obj) {
$(document).ready(function() {
$("#fruityid td").click(function() {
data = this.innerHTML;
k1 = Object.keys(obj2).find(k => obj2[k].indexOf(data) >= 0)
index = obj2[k1].indexOf(data);
obj2[k1].splice(index, 1);
obj[key2].push(data);
$(".total_count_Green_Fruits").html(key2 + ': ' + obj[key2].length);
var element = $(this).detach();
$('#fruitsid > tbody').append('<tr><td></td><td class="new-green-fruit">' + element.html() + '</td></tr>');
});
});
$(document).ready(function() {
$('body').on('click', '.new-green-fruit', function() {
console.log("Fruit : " + (this.innerHTML));
data2 = this.innerHTML;
k2 = Object.keys(obj).find(j => obj[j].indexOf(data2) >= 0)
index2 = obj[k2].indexOf(data2);
obj[k2].splice(index2, 1);
obj2[key3].push(data2);
});
});
}
redraw(obj);
listener(obj);
.class {
font-family: Open Sans;
}
.center {
display: flex;
justify-content: center
}
.skillsTable th {
border-left: 1px solid #AAA5A4;
border-right: 1px solid #AAA5A4;
}
table {
float: left;
border-collapse: collapse;
width: 70%
}
td {
border-left: 1px solid #AAA5A4;
border-right: 1px solid #AAA5A4;
padding-top: 8px;
padding-left: 11px;
font-size: 15px;
}
th {
color: #0080ff;
font-weight: normal;
border-bottom: 1px solid #AAA5A4;
padding-bottom: 5px;
}
div {
margin-bottom: 50px;
}
.new-green-fruit {
color: lime;
}
<!DOCTYPE html>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
<head>
<meta charset="utf-8" />
<link rel="shortcut icon" href="//#" />
<div id="result"> </div>
<div class="center">
<table id="fruitsid" class="fruitsclass skillsTable class">
<thead></thead>
<tbody></tbody>
</table>
</div>
<div class="center">
<table id="fruityid" class="fruityclass skillsTable class">
<thead></thead>
<tbody></tbody>
</table>
</div>
</body>
</html>
actually all you have to do is update the view. You have done the item shifting correctly.
You see no error first time you do the shift back, because the item is there. You only see the error second time you click the item in the list again. It is because view did not update and the item is gone already!

Using httpRequestXML to request a xml document how would you strip out the information from the xml document using javascript

I need help with running an if and else statement that will retrieve certain amounts of entries using XMLRequest and only return 10 entries instead of 30. I would like some assistance on how to make a function that will get the next set of entries so an example would be get 5 entries the first time and then 2nd click get 10 entries and so on.. I have been stuck and really would like to understand what I am not seeing clearly
<!DOCTYPE html>
<html lang="en">
<head>
<title>AJAX High Score Example</title>
<style>
body { background-color: lightgreen; }
h1 { color: black;
text-align: center;}
button { display: block;
margin-left: auto;
margin-right: auto; }
#box1 { background-color: grey;
color: green;
border: 2px solid black;
width: 550px;
padding: 20px;
margin-left: auto;
margin-right: auto; }
th, td { color: black;
min-width: 120px;
text-align: center;
border: 1px solid black;}
table { margin: 20px auto 0px auto;
border: 5px solid black;
background-color: yellow;}
</style>
</head>
<body>
<h1>Cedrics Music List 1990 XML Part A</h1>
<div id="box1"></div>
<button type="button" onclick="getScores()">Display
Scores</button>
<script>
var request1;
var ratingValue = new Array();
var trackValue = new Array();
var singerValue = new Array();
var arraySelected = 0;
function getScores() {
request1 = new XMLHttpRequest();
request1.onreadystatechange = callback;
request1.open("GET", "topSongs1990.xml", true);
request1.send();
}
function callback() {
if ((request1.readyState == 4) && (request1.status ==
200)) {
var parser;
var xmlDoc;
var scoreDataXML = request1.responseText;
console.log(scoreDataXML);
parser = new DOMParser();
xmlDoc =
parser.parseFromString(scoreDataXML,"text/xml");
var outputs = xmlDoc.getElementsByTagName("entry");
console.log(outputs);
var output = "<table>";
output += "<tr><th>RATING</th><th>TRACK</th>
<th>SINGER</th></tr>";
if (arraySelected > 0; arraySelected < 10; ) {
ratingValue[i].getElementsByTagName("rating")
[0].childnodes[0].nodeValue + "</td><td>"
+ trackValue[i].getElementsByTagName("track")
[0].childnodes[0].nodeValue + "</td><td>"
+ singerValue[i].getElementsByTagName("singer")
[0].childnodes[0].nodeValue + "</td><td>";
document.getElementsByTagName("entry").innerHTML;
}else if (arraySelected > 10; arraySelected > 20; ){
} else {
for(i=0; i < outputs.length; i++) {
var ratingElement =
outputs[i].getElementsByTagName("rating");
var trackElement =
outputs[i].getElementsByTagName("track");
var singerElement =
outputs[i].getElementsByTagName("singer");
var s1 = ratingElement[0].firstChild.nodeValue;
var i1 = trackElement[0].firstChild.nodeValue;
var d1 = singerElement[0].firstChild.nodeValue;
/*ratingValue[i] = s1;
trackValue[i] = i1;
singerValue[i] = d1;*/
var row = "<tr>";
row += "<td>" + s1 + "</td>";
row += "<td>" + i1 + "</td>";
row += "<td>" + d1 + "</td>";
row += "</tr>";
output += row;
}
/*console.log("The rating Array is " + ratingValue);
console.log("The initials Array is " + trackValue);
console.log("The dates Array is " + singerValue); */
output += "</table>";
document.getElementById("box1").innerHTML = output;
}
}
</script>
</body>
</html>
I would like to have my function spit out 10 entries per click and if im able to complete that I would like to know how to decrement those values.
(im actually really new to javascript, so I apologize)
I keep getting errors because I cant properly form the right syntax
ajaxXML6Modified.html:31 Uncaught ReferenceError: getScores is not
defined
at HTMLButtonElement.onclick (ajaxXML6Modified.html:31)
onclick # ajaxXML6Modified.html:31
Constructive Criticism Welcomed

How to create a sitemap page for my blogger blog

I have found a snippet from a template which I want to implement in my blog. I have to put this code in my template so that when I create a new page in blogger and write [sitemap] on it, the page becomes the sitemap of my blog. Please help me to do so. Here is the code:
if (static_page_text === "[sitemap]") {
var postbody = $('.static_page .post-body');
$.ajax({
url: "/feeds/posts/default?alt=json-in-script",
type: 'get',
dataType: "jsonp",
success: function(dataZ) {
var blogLabels = [];
for (var t = 0; t < dataZ.feed.category.length; t++) {
blogLabels.push(dataZ.feed.category[t].term)
}
var blogLabels = blogLabels.join('/');
postbody.html('<div class="siteLabel"></div>');
$('.static_page .post-body .siteLabel').text(blogLabels);
var splabel = $(".siteLabel").text().split("/");
var splabels = "";
for (get = 0; get < splabel.length; ++get) {
splabels += "<span>" + splabel[get] + "</span>"
}
$(".siteLabel").html(splabels);
$('.siteLabel span').each(function() {
var mapLabel = $(this);
var mapLabel_text = $(this).text();
$.ajax({
url: "/feeds/posts/default/-/" + mapLabel_text + "?alt=json-in-script",
type: 'get',
dataType: "jsonp",
success: function(data) {
var posturl = "";
var htmlcode = '<div class="mapa">';
for (var i = 0; i < data.feed.entry.length; i++) {
for (var j = 0; j < data.feed.entry[i].link.length; j++) {
if (data.feed.entry[i].link[j].rel == "alternate") {
posturl = data.feed.entry[i].link[j].href;
break
}
}
var posttitle = data.feed.entry[i].title.$t;
var author = data.feed.entry[i].author[0].name.$t;
var get_date = data.feed.entry[i].published.$t,
year = get_date.substring(0, 4),
month = get_date.substring(5, 7),
day = get_date.substring(8, 10),
date = text_month[parseInt(month, 10)] + ' ' + day + ', ' + year;
var tag = data.feed.entry[i].category[0].term;
var content = data.feed.entry[i].content.$t;
var $content = $('<div>').html(content);
var src2 = data.feed.entry[i].media$thumbnail.url;
htmlcode += '<div class="mapapost"><div class="map-thumb"><div class="map-img"><a href="' + posturl + '">' + posttitle + '</h3><div class="map-meta"><span class="p-author">' + author + '</span><span class="p-date">' + date + '</span></div></div>'
}
htmlcode += '</div>';
mapLabel.replaceWith('<div class="mapasite"><h2>' + mapLabel_text + '<span class="botao"><i class="fa fa-plus-circle"></i></span></h2>' + htmlcode + '</div>');
$(document).on('click', '.mapasite h2', function() {
$(this).parent('.mapasite').addClass('active');
$(this).find('.botao .fa').removeClass('fa-plus-circle').addClass('fa-minus-circle');
});
$(document).on('click', '.mapasite.active h2', function() {
$(this).parent('.mapasite').removeClass('active');
$(this).find('.botao .fa').addClass('fa-plus-circle').removeClass('fa-minus-circle');
});
}
});
});
}
});
}
</div>
</script>
Here the full code for Blogger use: In the template, search for the </body> tag and just above it paste the following HTML Coding.
<script type='text/javascript'>
//<![CDATA[
var static_page_text = $.trim($('.static_page .post-body').text());
if (static_page_text === "[sitemap]") {
var postbody = $('.static_page .post-body');
$.ajax({
url: "/feeds/posts/default?alt=json-in-script",
type: 'get',
dataType: "jsonp",
success: function(dataZ) {
var blogLabels = [];
for (var t = 0; t < dataZ.feed.category.length; t++) {
blogLabels.push(dataZ.feed.category[t].term)
}
var blogLabels = blogLabels.join('/');
postbody.html('<div class="siteLabel"></div>');
$('.static_page .post-body .siteLabel').text(blogLabels);
var splabel = $(".siteLabel").text().split("/");
var splabels = "";
for (get = 0; get < splabel.length; ++get) {
splabels += "<span>" + splabel[get] + "</span>"
}
$(".siteLabel").html(splabels);
$('.siteLabel span').each(function() {
var mapLabel = $(this);
var mapLabel_text = $(this).text();
$.ajax({
url: "/feeds/posts/default/-/" + mapLabel_text + "?alt=json-in-script",
type: 'get',
dataType: "jsonp",
success: function(data) {
var posturl = "";
var htmlcode = '<div class="mapa">';
for (var i = 0; i < data.feed.entry.length; i++) {
for (var j = 0; j < data.feed.entry[i].link.length; j++) {
if (data.feed.entry[i].link[j].rel == "alternate") {
posturl = data.feed.entry[i].link[j].href;
break
}
}
var posttitle = data.feed.entry[i].title.$t;
var author = data.feed.entry[i].author[0].name.$t;
var get_date = data.feed.entry[i].published.$t,
year = get_date.substring(0, 4),
month = get_date.substring(5, 7),
day = get_date.substring(8, 10),
date = text_month[parseInt(month, 10)] + ' ' + day + ', ' + year;
var tag = data.feed.entry[i].category[0].term;
var content = data.feed.entry[i].content.$t;
var $content = $('<div>').html(content);
var src2 = data.feed.entry[i].media$thumbnail.url;
htmlcode += '<div class="mapapost"><div class="map-thumb"><div class="map-img"><a href="' + posturl + '">' + posttitle + '</h3><div class="map-meta"><span class="p-author">' + author + '</span><span class="p-date">' + date + '</span></div></div>'
}
htmlcode += '</div>';
mapLabel.replaceWith('<div class="mapasite"><h2>' + mapLabel_text + '<span class="botao"><i class="fa fa-plus-circle"></i></span></h2>' + htmlcode + '</div>');
$(document).on('click', '.mapasite h2', function() {
$(this).parent('.mapasite').addClass('active');
$(this).find('.botao .fa').removeClass('fa-plus-circle').addClass('fa-minus-circle');
});
$(document).on('click', '.mapasite.active h2', function() {
$(this).parent('.mapasite').removeClass('active');
$(this).find('.botao .fa').addClass('fa-plus-circle').removeClass('fa-minus-circle');
});
}
});
});
}
});
}
//]]>
</script>
CSS Code : In the template, search for the </body> tag and just above it paste the following HTML Coding.
.mapasite {
margin-bottom: 10px;
background-color: #F8F8F8
}
.mapasite.active .mapa {
display: block
}
.mapasite .mapa {
display: none
}
.mapasite h2 {
background-color: #EEE;
color: $(primary.color);
font-size: 15px;
padding: 10px 20px;
border-radius: 2px;
margin-bottom: 0;
cursor: pointer;
font-weight: 700
}
.mapasite h2 .botao {
font-size: 18px;
line-height: 1.2em
}
.botao .fa-minus-circle {
color: #f30
}
.mapapost {
overflow: hidden;
margin-bottom: 20px;
height: 70px;
background-color: #FFF
}
.mapa {
padding: 40px
}
.map-thumb {
background-color: #F0F0F0;
padding: 10px;
display: block;
width: 65px;
height: 50px;
float: left
}
.map-img {
width: 65px;
height: 50px;
overflow: hidden;
border-radius: 2px
}
.map-thumb a {
width: 100%;
height: 100%;
display: block;
transition: all .3s ease-out!important;
-webkit-transition: all .3s ease-out!important;
-moz-transition: all .3s ease-out!important;
-o-transition: all .3s ease-out!important
}
.map-thumb a:hover {
-webkit-transform: scale(1.1) rotate(-1.5deg)!important;
-moz-transform: scale(1.1) rotate(-1.5deg)!important;
transform: scale(1.1) rotate(-1.5deg)!important;
transition: all .3s ease-out!important;
-webkit-transition: all .3s ease-out!important;
-moz-transition: all .3s ease-out!important;
-o-transition: all .3s ease-out!important
}
.mapapost .wrp-titulo {
padding-top: 10px;
font-weight: 700;
font-size: 14px;
line-height: 1.3em;
padding-left: 25px;
padding-right: 10px;
display: block;
overflow: hidden;
margin-bottom: 5px
}
.mapapost .wrp-titulo a {
}
.mapapost .wrp-titulo a:hover {
color: #f30;
text-decoration: underline
}
.map-meta {
display: block;
float: left;
overflow: hidden;
padding-left: 25px;
}
.mapasite h2 .botao {
float: right
}
Go to your blogger dashboard > Pages > Add New Page.
On the new page content after adding the page title and hiding the comments using options, add the following code in the page content area.
Refer to my blog on the same Generate XML Sitemap

Drag/drop & delete dynamic text on HTML canvas

I've found a number of tutorials online for dragging and dropping images and shapes within an HTML canvas. But they all seem to be aimed at moving objects that are generated within the canvas when the page loads. I'm building an app that lets the user click a button on a virtual keyboard, then click on the canvas to have the corresponding number or character appear. This is my code:
<script type="text/javascript">
var mathCanvas = document.getElementById("matharea");
var ctx = mathCanvas.getContext("2d");
ctx.font="20px Arial";
var placementCallback = function(){}
mathCanvas.onselectstart = function(){return false;}
function insertOne(){placementCallback = function(x, y){ctx.fillText('1', x-6,y+6);}};
function insertTwo(){placementCallback = function(x, y){ctx.fillText('2', x-6,y+6);}};
function insertThree(){placementCallback = function(x, y){ctx.fillText('3', x-6,y+6);}};
mathCanvas.onclick = function(event){
placementCallback(event.offsetX, event.offsetY);
}
</script>
I cut out some of the insert functions to keep this shorter (the buttons in my HTML have an onclick attribute that calls these functions). I need to be able to select the characters that are placed on the screen and implement drag/drop and delete functionality, but I can't think of a way to do this for text that gets placed on the screen after the page loads (I'm fairly new to Javascript). How would I do this? I'm not expecting anyone to give me the code to do this, but if I could get a push in the right direction, that'd be great.
The problem is that canvas is immediate-mode. Whatever you tell it to put on the canvas it will put on the canvas, instantly. It will not give you the ability to modify that value in any way, shape or form.
Think of it like the difference between MS Paint (or your OS' equivalent) and Photoshop.
In PS, you can have layers which can be moved around and edited, and when you decide your image is done, you save it and it flattens all of that data.
When you make an image in MS Paint, as soon as you click or type, that thing that you put there is there, and it's not moving/being edited unless you erase it, draw over it, or draw a rectangle around a section and move that whole rectangle (including the pixels around what you're trying to edit).
Just calling fillText will paint the words on, that instant, but will not remember what it drew, where it is, what it is, how the text is different from the surrounding pixels, et cetera.
So your generalized solution is that you need to turn your text into objects, and then draw an aspect (the text-content) of those objects to the screen.
If your text changes, you can make a change in the object, and redraw it (because your object will have its X and Y coordinates stored, and will have its width value stored, using the context.measureText(textObj.text).width method/property), and when you click on the canvas, you can check the coordinates of the click, and if those coordinates intersect with your text-object's stored coordinates, then you can modify its position on the screen.
In that regard, you should look into those examples which deal with dragging objects on the canvas.
The button click should be treated as a way to CREATE one of those objects.
I know this is a lot of code ... But I didn't want to go through it .. It's PART of something I built a long time ago ... Just copy and paste into a html file ... I hope it helps with what you need:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.17/jquery-ui.min.js" type="text/javascript"></script>
<script src="http://jquery-ui.googlecode.com/svn/tags/latest/external/jquery.bgiframe-2.1.2.js" type="text/javascript"></script>
<script src="http://jquery-ui.googlecode.com/svn/tags/latest/ui/minified/i18n/jquery-ui-i18n.min.js" type="text/javascript"></script>
<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.min.js"></script>
<script>
;(function($) {
$.fn.insertAtCaret = function (myValue) {
return this.each(function() {
//IE support
if (document.selection) {
this.focus();
sel = document.selection.createRange();
sel.text = myValue;
this.focus();
} else if (this.selectionStart || this.selectionStart == '0') {
//MOZILLA / NETSCAPE support
var startPos = this.selectionStart;
var endPos = this.selectionEnd;
var scrollTop = this.scrollTop;
this.value = this.value.substring(0, startPos)+ myValue+ this.value.substring(endPos,this.value.length);
this.focus();
this.selectionStart = startPos + myValue.length;
this.selectionEnd = startPos + myValue.length;
this.scrollTop = scrollTop;
} else {
this.value += myValue;
this.focus();
}
});
};
})(jQuery);
$(function go_prev() {
//When you click on a link with class of poplight and the href starts with a #
$('a.poplight[href^=#]').click(function() {
var popID = $(this).attr('rel'); //Get Popup Name
var popURL = $(this).attr('href'); //Get Popup href to define size
//Pull Query & Variables from href URL
var query= popURL.split('?');
var dim= query[1].split('&');
var popWidth = dim[0].split('=')[1]; //Gets the first query string value
//Fade in the Popup and add close button
$('#' + popID).fadeIn().css({ 'width': Number( popWidth ) }).prepend('<img src="close_pop.png" class="btn_close" title="Close Window" alt="Close" />');
//Define margin for center alignment (vertical horizontal) - we add 80px to the height/width to accomodate for the padding and border width defined in the css
var popMargTop = ($('#' + popID).height() + 90) / 2;
var popMargLeft = ($('#' + popID).width() + 80) / 2;
//Apply Margin to Popup
$('#' + popID).css({
'top' : 10,
'margin-left' : -popMargLeft
});
//Fade in Background
$('body').append('<div id="fade"></div>'); //Add the fade layer to bottom of the body tag.
$('#fade').css({'filter' : 'alpha(opacity=80)'}).fadeIn(); //Fade in the fade layer - .css({'filter' : 'alpha(opacity=80)'}) is used to fix the IE Bug on fading transparencies
return false;
});
//Close Popups and Fade Layer
$('a.close, #fade').live('click', function() { //When clicking on the close or fade layer...
$('#fade , .popup_block').fadeOut(function() {
$('#fade, a.close').remove(); //fade them both out
});
return false;
});
});
</script>
<script>
var NumIms = 0;
var NumTxts = 0;
//IMAGE VARIABLES
var ImIds=[];
var ImNm=[];
var ImWdth=[];
var ImHght=[];
//TEXT VARIABLES
var TxtIds=[];
var Txt=[];
var TxtFnt=[];
var TxtCol=[];
var TxtSz=[];
var MyWidth;
var MyHeight;
var img;
function MoveOver(id,Rid) {
var img = new Image();
img.src = Rid;
MyWidth = img.width;
MyHeight = img.height;
$("#UpIm" + id).append("W=" + MyWidth + " H=" + MyHeight);
$("#containment-wrapper").append('<div id="AdIm' + id + '" class="draggable ui-widget-content" style="width:' + MyWidth + 'px; height:' + MyHeight + 'px; background-image: url(' + Rid + '); position:absolute; left:18px; top:18px;"></div>');
ImIds[id]="AdIm" + id;
ImNm[id]=Rid;
ImWdth[id]=MyWidth;
ImHght[id]=MyHeight;
$( "#AdIm" + id ).draggable();
var f = document.getElementById('UpIm' +id);
var Olddiv = document.getElementById('ul' + id);
f.removeChild(Olddiv);
}
</script>
<script>
function removeIm(id) {
var f = document.getElementById('files');
var Folddiv = document.getElementById('UpIm' + id);
f.removeChild(Folddiv);
var d = document.getElementById('containment-wrapper');
var Dolddiv = document.getElementById('AdIm' + id);
d.removeChild(Dolddiv);
ImIds.splice(id,1,"deleted");
}
</script>
<script type="text/javascript" >
var iid = -1;
var pic_real_width, pic_real_height, img;
function removeFormIm(Rid,id) {
var f = document.getElementById('files');
var Folddiv = document.getElementById('UpIm' + id);
f.removeChild(Folddiv);
var d = document.getElementById('containment-wrapper');
var Dolddiv = document.getElementById('AdIm' + id);
d.removeChild(Folddiv);
}
</script>
<style>
#containment-wrapper { width: 845px; height:150px; border:2px solid #ccc; }
#fade { /*--Transparent background layer--*/
display: none; /*--hidden by default--*/
background: #000;
position: fixed; left: 0; top: 0;
width: 100%; height: 100%;
opacity: .80;
z-index: 9999;
}
.popup_block{
display: none; /*--hidden by default--*/
background: #fff;
padding: 20px;
border: 20px solid #ddd;
float: left;
font-size: 1.2em;
position: fixed;
top: 50%; left: 50%;
z-index: 99999;
/*--CSS3 Box Shadows--*/
-webkit-box-shadow: 0px 0px 20px #000;
-moz-box-shadow: 0px 0px 20px #000;
box-shadow: 0px 0px 20px #000;
/*--CSS3 Rounded Corners--*/
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
}
.t_t{
display: none; /*--hidden by default--*/
background: #fff;
padding: 20px;
border: 20px solid #ddd;
float: left;
font-size: 1.2em;
position: fixed;
top: 50%; left: 50%;
z-index: 99999;
/*--CSS3 Box Shadows--*/
-webkit-box-shadow: 0px 0px 20px #000;
-moz-box-shadow: 0px 0px 20px #000;
box-shadow: 0px 0px 20px #000;
/*--CSS3 Rounded Corners--*/
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
}
img.btn_close {
float: right;
margin: -55px -55px 0 0;
}
/*--Making IE6 Understand Fixed Positioning--*/
*html #fade {
position: absolute;
}
*html .popup_block {
position: absolute;
}
</style>
<script>
function changeTxt(id){
var my_txt;
my_txt = document.getElementById('TxtIn' + id).value;
document.getElementById('AdText' + id).innerHTML = my_txt;
Txt[id] = my_txt;
}
</script>
<script>
function makebold(id){
$('#TxtIn' + id).insertAtCaret('<b></b>');
changeTxt(id);
}
function makeitalic(id){
$('#TxtIn' + id).insertAtCaret('<i></i>');
changeTxt(id);
}
function makecenter(id){
var my_txt;
my_txt = document.getElementById('TxtIn' + id).value;
$("textarea#TxtIn" + id).val('<center>' + my_txt + '</center>');
changeTxt(id)
}
function makebr(id){
$('#TxtIn' + id).insertAtCaret('<br>');
changeTxt(id);
}
function makelink(id){
get_color = document.getElementById('fcolor' + id).value;
$('#TxtIn' + id).insertAtCaret('');
changeTxt(id);
}
function makeh2(id){
$('#TxtIn' + id).insertAtCaret('<H2></H2>');
changeTxt(id);
}
function makeh3(id){
$('#TxtIn' + id).insertAtCaret('<H3></H3>');
changeTxt(id);
}
</script>
<script>
function callFontType(id){
var type;
type = document.getElementById('ftype' + id).value;
document.getElementById('AdText' + id).style.fontFamily=type;
TxtFnt[id] = type;
}
</script>
<script>
function CxColor(id){
var Clor;
Clor = document.getElementById('fcolor' + id).value;
Clor = '#' + Clor;
document.getElementById('AdText' + id).style.color=Clor;
TxtCol[id] = Clor;
}
</script>
<script>
function changeFSize(id){
var my_size;
my_size = document.getElementById('SizeIn' + id).value;
my_size = my_size + 'px';
document.getElementById('AdText' + id).style.fontSize = my_size;
TxtSz[id] = my_size;
}
</script>
<script>
var id = -1;
function addFormField() {
id = id + 1;
$("#divTxt").append("<span id='row" + id + "'><small>Add: to textbox:</small><input value=\"b\" onclick=\"makebold(" + id + ")\" title=\"bold: <b>text</b>\" type=\"button\"><input value=\"i\" onclick=\"makeitalic(" + id + ")\" title=\"italic: <i>text</i>\" type=\"button\"><input value=\"center\" onclick=\"makecenter(" + id + ")\" title=\"center: <center>text</center>\" type=\"button\"><input value=\"BR\" onclick=\"makebr(" + id + ")\" title=\"BR: <br>\" type=\"button\"><input value=\"link\" onclick=\"makelink(" + id + ")\" title=\"link: <a href= >URL</a>\" type=\"button\"><input value=\"H2\" onclick=\"makeh2(" + id + ")\" title=\"H2: <H2>text</H2>\" type=\"button\"><input value=\"H3\" onclick=\"makeh3(" + id + ")\" title=\"H3: <H3>text</H3>\" type=\"button\"><br><table><tr><td><a onClick='removeFormField(\"#row" + id + "\",\"" + id + "\"); return false;'>REMOVE</a></td><td> <textarea cols=50 rows=5 name='txt[]' id='TxtIn" + id + "' onKeyUp=\"changeTxt(" + id + ");\">Text " + id + "</textarea></td><td>Font:<select onChange=\"callFontType(" + id + ");\" id=\"ftype" + id + "\"><option value=\"Arial, Helvetica, sans-serif\">Arial</option><option value=\"Impact, Charcoal, sans-serif\">Impact</option><option value=\"Palatino Linotype, Book Antiqua, Palatino, serif\">Palatino</option><option value=\"Tahoma, Geneva, sans-serif\">Tahoma</option><option value=\"Century Gothic, sans-serif\">Century Gothic</option><option value=\"Lucida Sans Unicode, Lucida Grande, sans-serif\">Lucida Grande</option><option value=\"Arial Black, Gadget, sans-serif\">Arial Black</option><option value=\"Times New Roman, Times, serif\">Times New Roman</option><option value=\"Arial Narrow, sans-serif\">Arial Narrow</option><option value=\"Verdana, Geneva, sans-serif\">Verdana</option><option value=\"Copperplate, Copperplate Gothic Light, sans-serif\">Copperplate</option><option value=\"Lucida Console, Monaco, monospace\">Lucida Console</option><option value=\"Gill Sans, Gill Sans MT, sans-serif\">Gill Sans</option><option value=\"Trebuchet MS, Helvetica, sans-serif\">Trebuchet</option><option value=\"Courier New, Courier, monospace\">Courier New</option><option value=\"Georgia, Serif\">Georgia</option></select><br>Color: <input id=\"fcolor" + id + "\" class=\"color\" value=\"000000\"><img src=\"go.png\" style=\"vertical-align:middle;\" onClick='CxColor(" + id + ");'><br>Size: <input type='text' size='4' value=\"12\" name='txt[]' id='SizeIn" + id + "' onKeyUp=\"changeFSize(" + id + ");\"></td></tr></table><br><hr style=\"width:800px; float:left;\"><br></span>");
$("#containment-wrapper").append('<span id="AdText' + id + '" class="draggable ui-widget-content" style="position:absolute; left:18px; top:18px; font-size:16px; font-family:Arial, Helvetica, sans-serif;">Text ' + id + '</span>');
$( "#AdText" + id ).draggable();//{ containment: "#containment-wrapper", scroll: true }
$('#fcolor' + id).load(jscolor.init());
TxtIds[id] = "AdText" + id;
Txt[id] = "Ad Text";
TxtFnt[id] = "Arial";
TxtCol[id] = "#000000";
TxtSz[id] = "16";
$('#row' + id).highlightFade({
speed:1000
});
document.getElementById("id").value = id;
}
function removeFormField(Rid,id) {
$(Rid).remove();
var d = document.getElementById('containment-wrapper');
var olddiv = document.getElementById('AdText' + id);
d.removeChild(olddiv);
TxtIds.splice(id,1,"deleted");
}
function GetURL(id) {
var gurl;
var Ims = "";
var len=ImIds.length;
NumIms = 0;
NumTxts = 0;
//############ Start Get Images for URL ##############
for(var i=0; i<len; i++) {
NumIms++;
var value = ImIds[i];
Ims += '&ImName' + i + '=' + value;
if (value != "deleted"){
value = ImNm[i];
Ims += '&ImNm' + i + '=' + value;
value = ImWdth[i];
Ims += '&ImWidth' + i + '=' + value;
value = ImHght[i];
Ims += '&ImHeight' + i + '=' + value;
value = $('#AdIm' + i).position().left - $('#AdIm' + i).closest('#containment-wrapper').position().left;
Ims += '&ImLt' + i + '=' + value;
value = $('#AdIm' + i).position().top - $('#AdIm' + i).closest('#containment-wrapper').position().top;
Ims += '&ImTop' + i + '=' + value;
}
}
//########### End Get Images For URL #####################
len=TxtIds.length;
//############ Start Get Texts for URL ##############
for(var i=0; i<len; i++) {
NumTxts++;
var value = TxtIds[i];
Ims += '&TxtName' + i + '=' + escape(value);
if (value != "deleted"){
value = Txt[i];
Ims += '&Txt' + i + '=' + escape(value);
value = TxtFnt[i];
Ims += '&TxtFnt' + i + '=' + escape(value);
value = TxtCol[i];
value = value.substring(1);
Ims += '&TxtCol' + i + '=' + escape(value);
value = TxtSz[i];
Ims += '&TxtSz' + i + '=' + escape(value);
value = $('#AdText' + i).position().left - $('#AdText' + i).closest('#containment-wrapper').position().left;
Ims += '&TxtLt' + i + '=' + value;
value = $('#AdText' + i).position().top - $('#AdText' + i).closest('#containment-wrapper').position().top;
Ims += '&TxtTop' + i + '=' + value;
}
}
//########### End Get Texts For URL #####################
gurl = "ad.php?AdType=hero&ImNum=" + NumIms + "&TxtNum=" + NumTxts;
gurl = gurl + Ims;
//alert(gurl);gurl = escape( gurl );
$("#genurl" + id).html('<textarea id="fe_text" cols=50 rows=5 name="ad_url">' + gurl + '</textarea><br><br><table><tr><td><font style="font-family:Arial, Helvetica, sans-serif; font-size:16px; color:#009999">Preview Gernerated Ad:</font></td><td><img src="view.png"></td></tr></table><br>');
}
</script>
<script type="text/javascript">
$(document).ready(function(){
$("#myform1").validate({
debug: false,
submitHandler: function(form) {
// do other stuff for a valid form
$.post('process.php', $("#myform1").serialize(), function(data) {
$('#results').fadeIn('fast');
var mySplitResult = data.split("|||");
if(mySplitResult[1] !== "fail" && mySplitResult[1] !== "disable"){
$('#upd1').html('<textarea id="fe_text" cols=50 rows=5 readonly="readonly">' + mySplitResult[1] + '</textarea><br />');
}
$('#results').html(mySplitResult[0]);
$('#prev1').html(mySplitResult[1]);
setTimeout(function() {
$('#results').fadeOut('slow');
}, 2500);
});
}
});
});
</script>
<script type="text/javascript" src="jscolor.js"></script>
</head>
<body>
<div id="containment-wrapper">
<!--<span id="AdText0" class="draggable ui-widget-content">For Testing ... </span> -->
</div>
<div style="margin-left:50px;">
<center><p style="font-family:Arial, Helvetica, sans-serif; font-size:24px; color:#FF0099">Text Field Input</p>
<p>Add Text Field</p></center>
<form action="#" method="get" id="form1" style="font-family:Arial, Helvetica, sans-serif; font-size:16px;">
<input type="hidden" id="id" value="1">
<div id="divTxt"></div>
</form>
</div>
<!-- End Hidden Divs -->
</body>
</html>

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