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Build HTML via DOM manipulation (vs string manipulation) #6179

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Build HTML via DOM manipulation (vs string manipulation) #6179

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9e0a04e
replace HTML string array with DOM node creation for legendCallback
ian-pvd Mar 29, 2019
ae9ed57
fix: don't nest labels inside spans
ian-pvd Mar 29, 2019
66e7a71
replace HTML string array with DOM node creation for doughnut and pol…
ian-pvd Mar 29, 2019
2e8276f
suggestion: use for ul element variable, instead of for previous HT…
ian-pvd Mar 29, 2019
610d191
Update documentation for generateLegend method; fix corresponding uni…
Apr 1, 2019
62c4512
Merge pull request #2 from ian-pvd/wordpress-vip-code-review-patch-tests
ian-pvd Apr 1, 2019
f6447a3
CR fix: Use DOM node constructors, but return HTML string for backwar…
ian-pvd Apr 4, 2019
f9692c2
Update unit test expected inline style spacing.
ian-pvd Apr 4, 2019
1a01415
CR fixes: variable declaration, conditional and logic control formatting
ian-pvd Apr 4, 2019
4745b7d
add check for datasets values in doughnut and polar area
ian-pvd May 10, 2019
59e4107
declare variables at the top
ian-pvd May 10, 2019
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18 changes: 9 additions & 9 deletions src/controllers/controller.doughnut.js
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Original file line number Diff line number Diff line change
Expand Up @@ -19,25 +19,25 @@ defaults._set('doughnut', {
mode: 'single'
},
legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');

var list = document.createElement('ul');
var data = chart.data;
var datasets = data.datasets;
var labels = data.labels;
var i, ilen, listItem, listItemSpan;

if (datasets.length) {
for (var i = 0; i < datasets[0].data.length; ++i) {
text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
list.setAttribute('class', chart.id + '-legend');
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class is not set when datasets is empty. This line should be outside the if to mimic old behavior.

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agreed. if we could fix this during the rebase that'd be great

for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) {
listItem = list.appendChild(document.createElement('li'));
listItemSpan = listItem.appendChild(document.createElement('span'));
listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i];
if (labels[i]) {
text.push(labels[i]);
listItem.appendChild(document.createTextNode(labels[i]));
}
text.push('</li>');
}
}

text.push('</ul>');
return text.join('');
return list.outerHTML;
},
legend: {
labels: {
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18 changes: 9 additions & 9 deletions src/controllers/controller.polarArea.js
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Expand Up @@ -32,25 +32,25 @@ defaults._set('polarArea', {

startAngle: -0.5 * Math.PI,
legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');

var list = document.createElement('ul');
var data = chart.data;
var datasets = data.datasets;
var labels = data.labels;
var i, ilen, listItem, listItemSpan;

if (datasets.length) {
for (var i = 0; i < datasets[0].data.length; ++i) {
text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
list.setAttribute('class', chart.id + '-legend');
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Same here

for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) {
listItem = list.appendChild(document.createElement('li'));
listItemSpan = listItem.appendChild(document.createElement('span'));
listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i];
if (labels[i]) {
text.push(labels[i]);
listItem.appendChild(document.createTextNode(labels[i]));
}
text.push('</li>');
}
}

text.push('</ul>');
return text.join('');
return list.outerHTML;
},
legend: {
labels: {
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20 changes: 12 additions & 8 deletions src/plugins/plugin.legend.js
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Expand Up @@ -71,17 +71,21 @@ defaults._set('global', {
},

legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');
for (var i = 0; i < chart.data.datasets.length; i++) {
text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
var list = document.createElement('ul');
var i, ilen, listItem, listItemSpan;

list.setAttribute('class', chart.id + '-legend');

for (i = 0, ilen = chart.data.datasets.length; i < ilen; i++) {
listItem = list.appendChild(document.createElement('li'));
listItemSpan = listItem.appendChild(document.createElement('span'));
listItemSpan.style.backgroundColor = chart.data.datasets[i].backgroundColor;
if (chart.data.datasets[i].label) {
text.push(chart.data.datasets[i].label);
listItem.appendChild(document.createTextNode(chart.data.datasets[i].label));
}
text.push('</li>');
}
text.push('</ul>');
return text.join('');

return list.outerHTML;
}
});

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4 changes: 2 additions & 2 deletions test/specs/global.defaults.tests.js
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Expand Up @@ -102,7 +102,7 @@ describe('Default Configs', function() {
options: config
});

var expectedLegend = '<ul class="' + chart.id + '-legend"><li><span style="background-color:red"></span>label1</li><li><span style="background-color:green"></span>label2</li></ul>';
var expectedLegend = '<ul class="' + chart.id + '-legend"><li><span style="background-color: red;"></span>label1</li><li><span style="background-color: green;"></span>label2</li></ul>';
expect(chart.generateLegend()).toBe(expectedLegend);
});

Expand Down Expand Up @@ -218,7 +218,7 @@ describe('Default Configs', function() {
options: config
});

var expectedLegend = '<ul class="' + chart.id + '-legend"><li><span style="background-color:red"></span>label1</li><li><span style="background-color:green"></span>label2</li></ul>';
var expectedLegend = '<ul class="' + chart.id + '-legend"><li><span style="background-color: red;"></span>label1</li><li><span style="background-color: green;"></span>label2</li></ul>';
expect(chart.generateLegend()).toBe(expectedLegend);
});

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