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/* eslint-disable func-names, space-before-function-paren, no-var, one-var, one-var-declaration-per-line, wrap-iife, no-else-return, consistent-return, object-shorthand, comma-dangle, no-param-reassign, padded-blocks, camelcase, prefer-arrow-callback, max-len */
// MarkdownPreview
//
// Handles toggling the "Write" and "Preview" tab clicks, rendering the preview,
// and showing a warning when more than `x` users are referenced.
//
(function() {
var lastTextareaPreviewed, markdownPreview, previewButtonSelector, writeButtonSelector;
window.MarkdownPreview = (function() {
function MarkdownPreview() {}
// Minimum number of users referenced before triggering a warning
MarkdownPreview.prototype.referenceThreshold = 10;
MarkdownPreview.prototype.ajaxCache = {};
MarkdownPreview.prototype.showPreview = function(form) {
var mdText, preview;
preview = form.find('.js-md-preview');
mdText = form.find('textarea.markdown-area').val();
if (mdText.trim().length === 0) {
preview.text('Nothing to preview.');
return this.hideReferencedUsers(form);
} else {
preview.text('Loading...');
return this.renderMarkdown(mdText, (function(_this) {
return function(response) {
preview.html(response.body);
preview.syntaxHighlight();
return _this.renderReferencedUsers(response.references.users, form);
};
})(this));
}
};
MarkdownPreview.prototype.renderMarkdown = function(text, success) {
if (!window.preview_markdown_path) {
return;
}
if (text === this.ajaxCache.text) {
return success(this.ajaxCache.response);
}
return $.ajax({
type: 'POST',
url: window.preview_markdown_path,
data: {
text: text
},
dataType: 'json',
success: (function(_this) {
return function(response) {
_this.ajaxCache = {
text: text,
response: response
};
return success(response);
};
})(this)
});
};
MarkdownPreview.prototype.hideReferencedUsers = function(form) {
var referencedUsers;
referencedUsers = form.find('.referenced-users');
return referencedUsers.hide();
};
MarkdownPreview.prototype.renderReferencedUsers = function(users, form) {
var referencedUsers;
referencedUsers = form.find('.referenced-users');
if (referencedUsers.length) {
if (users.length >= this.referenceThreshold) {
referencedUsers.show();
return referencedUsers.find('.js-referenced-users-count').text(users.length);
} else {
return referencedUsers.hide();
}
}
};
return MarkdownPreview;
})();
markdownPreview = new window.MarkdownPreview();
previewButtonSelector = '.js-md-preview-button';
writeButtonSelector = '.js-md-write-button';
lastTextareaPreviewed = null;
$.fn.setupMarkdownPreview = function() {
var $form, form_textarea;
$form = $(this);
form_textarea = $form.find('textarea.markdown-area');
form_textarea.on('input', function() {
return markdownPreview.hideReferencedUsers($form);
});
return form_textarea.on('blur', function() {
return markdownPreview.showPreview($form);
});
};
$(document).on('markdown-preview:show', function(e, $form) {
if (!$form) {
return;
}
lastTextareaPreviewed = $form.find('textarea.markdown-area');
// toggle tabs
$form.find(writeButtonSelector).parent().removeClass('active');
$form.find(previewButtonSelector).parent().addClass('active');
// toggle content
$form.find('.md-write-holder').hide();
$form.find('.md-preview-holder').show();
return markdownPreview.showPreview($form);
});
$(document).on('markdown-preview:hide', function(e, $form) {
if (!$form) {
return;
}
lastTextareaPreviewed = null;
// toggle tabs
$form.find(writeButtonSelector).parent().addClass('active');
$form.find(previewButtonSelector).parent().removeClass('active');
// toggle content
$form.find('.md-write-holder').show();
$form.find('textarea.markdown-area').focus();
return $form.find('.md-preview-holder').hide();
});
$(document).on('markdown-preview:toggle', function(e, keyboardEvent) {
var $target;
$target = $(keyboardEvent.target);
if ($target.is('textarea.markdown-area')) {
$(document).triggerHandler('markdown-preview:show', [$target.closest('form')]);
return keyboardEvent.preventDefault();
} else if (lastTextareaPreviewed) {
$target = lastTextareaPreviewed;
$(document).triggerHandler('markdown-preview:hide', [$target.closest('form')]);
return keyboardEvent.preventDefault();
}
});
$(document).on('click', previewButtonSelector, function(e) {
var $form;
e.preventDefault();
$form = $(this).closest('form');
return $(document).triggerHandler('markdown-preview:show', [$form]);
});
$(document).on('click', writeButtonSelector, function(e) {
var $form;
e.preventDefault();
$form = $(this).closest('form');
return $(document).triggerHandler('markdown-preview:hide', [$form]);
});
}).call(this);
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