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/* global H5PAdminIntegration H5PUtils */
var H5PLibraryDetails = H5PLibraryDetails || {};
(function ($) {
H5PLibraryDetails.PAGER_SIZE = 20;
/**
* Initializing
*/
H5PLibraryDetails.init = function () {
H5PLibraryDetails.$adminContainer = H5P.jQuery(H5PAdminIntegration.containerSelector);
H5PLibraryDetails.library = H5PAdminIntegration.libraryInfo;
// currentContent holds the current list if data (relevant for filtering)
H5PLibraryDetails.currentContent = H5PLibraryDetails.library.content;
// The current page index (for pager)
H5PLibraryDetails.currentPage = 0;
// The current filter
H5PLibraryDetails.currentFilter = '';
// We cache the filtered results, so we don't have to do unneccessary searches
H5PLibraryDetails.filterCache = [];
// Append library info
H5PLibraryDetails.$adminContainer.append(H5PLibraryDetails.createLibraryInfo());
// Append node list
H5PLibraryDetails.$adminContainer.append(H5PLibraryDetails.createContentElement());
};
/**
* Create the library details view
*/
H5PLibraryDetails.createLibraryInfo = function () {
var $libraryInfo = $('<div class="h5p-library-info"></div>');
$.each(H5PLibraryDetails.library.info, function (title, value) {
$libraryInfo.append(H5PUtils.createLabeledField(title, value));
});
return $libraryInfo;
};
/**
* Create the content list with searching and paging
*/
H5PLibraryDetails.createContentElement = function () {
if (H5PLibraryDetails.library.notCached !== undefined) {
return H5PUtils.getRebuildCache(H5PLibraryDetails.library.notCached);
}
if (H5PLibraryDetails.currentContent === undefined) {
H5PLibraryDetails.$content = $('<div class="h5p-content empty">' + H5PLibraryDetails.library.translations.noContent + '</div>');
}
else {
H5PLibraryDetails.$content = $('<div class="h5p-content"><h3>' + H5PLibraryDetails.library.translations.contentHeader + '</h3></div>');
H5PLibraryDetails.createSearchElement();
H5PLibraryDetails.createPageSizeSelector();
H5PLibraryDetails.createContentTable();
H5PLibraryDetails.createPagerElement();
return H5PLibraryDetails.$content;
}
};
/**
* Creates the content list
*/
H5PLibraryDetails.createContentTable = function () {
// Remove it if it exists:
if (H5PLibraryDetails.$contentTable) {
H5PLibraryDetails.$contentTable.remove();
}
H5PLibraryDetails.$contentTable = H5PUtils.createTable();
var i = (H5PLibraryDetails.currentPage*H5PLibraryDetails.PAGER_SIZE);
var lastIndex = (i+H5PLibraryDetails.PAGER_SIZE);
if (lastIndex > H5PLibraryDetails.currentContent.length) {
lastIndex = H5PLibraryDetails.currentContent.length;
}
for (; i<lastIndex; i++) {
var content = H5PLibraryDetails.currentContent[i];
H5PLibraryDetails.$contentTable.append(H5PUtils.createTableRow(['<a href="' + content.url + '">' + content.title + '</a>']));
}
// Appends it to the browser DOM
H5PLibraryDetails.$contentTable.insertAfter(H5PLibraryDetails.$search);
};
/**
* Creates the pager element on the bottom of the list
*/
H5PLibraryDetails.createPagerElement = function () {
H5PLibraryDetails.$previous = $('<button type="button" class="previous h5p-admin"><</button>');
H5PLibraryDetails.$next = $('<button type="button" class="next h5p-admin">></button>');
H5PLibraryDetails.$previous.on('click', function () {
if (H5PLibraryDetails.$previous.hasClass('disabled')) {
return;
}
H5PLibraryDetails.currentPage--;
H5PLibraryDetails.updatePager();
H5PLibraryDetails.createContentTable();
});
H5PLibraryDetails.$next.on('click', function () {
if (H5PLibraryDetails.$next.hasClass('disabled')) {
return;
}
H5PLibraryDetails.currentPage++;
H5PLibraryDetails.updatePager();
H5PLibraryDetails.createContentTable();
});
// This is the Page x of y widget:
H5PLibraryDetails.$pagerInfo = $('<span class="pager-info"></span>');
H5PLibraryDetails.$pager = $('<div class="h5p-content-pager"></div>').append(H5PLibraryDetails.$previous, H5PLibraryDetails.$pagerInfo, H5PLibraryDetails.$next);
H5PLibraryDetails.$content.append(H5PLibraryDetails.$pager);
H5PLibraryDetails.$pagerInfo.on('click', function () {
var width = H5PLibraryDetails.$pagerInfo.innerWidth();
H5PLibraryDetails.$pagerInfo.hide();
// User has updated the pageNumber
var pageNumerUpdated = function () {
var newPageNum = $gotoInput.val()-1;
var intRegex = /^\d+$/;
$goto.remove();
H5PLibraryDetails.$pagerInfo.css({display: 'inline-block'});
// Check if input value is valid, and that it has actually changed
if (!(intRegex.test(newPageNum) && newPageNum >= 0 && newPageNum < H5PLibraryDetails.getNumPages() && newPageNum != H5PLibraryDetails.currentPage)) {
return;
}
H5PLibraryDetails.currentPage = newPageNum;
H5PLibraryDetails.updatePager();
H5PLibraryDetails.createContentTable();
};
// We create an input box where the user may type in the page number
// he wants to be displayed.
// Reson for doing this is when user has ten-thousands of elements in list,
// this is the easiest way of getting to a specified page
var $gotoInput = $('<input/>', {
type: 'number',
min : 1,
max: H5PLibraryDetails.getNumPages(),
on: {
// Listen to blur, and the enter-key:
'blur': pageNumerUpdated,
'keyup': function (event) {
if (event.keyCode === 13) {
pageNumerUpdated();
}
}
}
}).css({width: width});
var $goto = $('<span/>', {
'class': 'h5p-pager-goto'
}).css({width: width}).append($gotoInput).insertAfter(H5PLibraryDetails.$pagerInfo);
$gotoInput.focus();
});
H5PLibraryDetails.updatePager();
};
/**
* Calculates number of pages
*/
H5PLibraryDetails.getNumPages = function () {
return Math.ceil(H5PLibraryDetails.currentContent.length / H5PLibraryDetails.PAGER_SIZE);
};
/**
* Update the pager text, and enables/disables the next and previous buttons as needed
*/
H5PLibraryDetails.updatePager = function () {
H5PLibraryDetails.$pagerInfo.css({display: 'inline-block'});
if (H5PLibraryDetails.getNumPages() > 0) {
var message = H5PUtils.translateReplace(H5PLibraryDetails.library.translations.pageXOfY, {
'$x': (H5PLibraryDetails.currentPage+1),
'$y': H5PLibraryDetails.getNumPages()
});
H5PLibraryDetails.$pagerInfo.html(message);
}
else {
H5PLibraryDetails.$pagerInfo.html('');
}
H5PLibraryDetails.$previous.toggleClass('disabled', H5PLibraryDetails.currentPage <= 0);
H5PLibraryDetails.$next.toggleClass('disabled', H5PLibraryDetails.currentContent.length < (H5PLibraryDetails.currentPage+1)*H5PLibraryDetails.PAGER_SIZE);
};
/**
* Creates the search element
*/
H5PLibraryDetails.createSearchElement = function () {
H5PLibraryDetails.$search = $('<div class="h5p-content-search"><input placeholder="' + H5PLibraryDetails.library.translations.filterPlaceholder + '" type="search"></div>');
var performSeach = function () {
var searchString = $('.h5p-content-search > input').val();
// If search string same as previous, just do nothing
if (H5PLibraryDetails.currentFilter === searchString) {
return;
}
if (searchString.trim().length === 0) {
// If empty search, use the complete list
H5PLibraryDetails.currentContent = H5PLibraryDetails.library.content;
}
else if (H5PLibraryDetails.filterCache[searchString]) {
// If search is cached, no need to filter
H5PLibraryDetails.currentContent = H5PLibraryDetails.filterCache[searchString];
}
else {
var listToFilter = H5PLibraryDetails.library.content;
// Check if we can filter the already filtered results (for performance)
if (searchString.length > 1 && H5PLibraryDetails.currentFilter === searchString.substr(0, H5PLibraryDetails.currentFilter.length)) {
listToFilter = H5PLibraryDetails.currentContent;
}
H5PLibraryDetails.currentContent = $.grep(listToFilter, function (content) {
return content.title && content.title.match(new RegExp(searchString, 'i'));
});
}
H5PLibraryDetails.currentFilter = searchString;
// Cache the current result
H5PLibraryDetails.filterCache[searchString] = H5PLibraryDetails.currentContent;
H5PLibraryDetails.currentPage = 0;
H5PLibraryDetails.createContentTable();
// Display search results:
if (H5PLibraryDetails.$searchResults) {
H5PLibraryDetails.$searchResults.remove();
}
if (searchString.trim().length > 0) {
H5PLibraryDetails.$searchResults = $('<span class="h5p-admin-search-results">' + H5PLibraryDetails.currentContent.length + ' hits on ' + H5PLibraryDetails.currentFilter + '</span>');
H5PLibraryDetails.$search.append(H5PLibraryDetails.$searchResults);
}
H5PLibraryDetails.updatePager();
};
var inputTimer;
$('input', H5PLibraryDetails.$search).on('change keypress paste input', function () {
// Here we start the filtering
// We wait at least 500 ms after last input to perform search
if (inputTimer) {
clearTimeout(inputTimer);
}
inputTimer = setTimeout( function () {
performSeach();
}, 500);
});
H5PLibraryDetails.$content.append(H5PLibraryDetails.$search);
};
/**
* Creates the page size selector
*/
H5PLibraryDetails.createPageSizeSelector = function () {
H5PLibraryDetails.$search.append('<div class="h5p-admin-pager-size-selector">' + H5PLibraryDetails.library.translations.pageSizeSelectorLabel + ':<span data-page-size="10">10</span><span class="selected" data-page-size="20">20</span><span data-page-size="50">50</span><span data-page-size="100">100</span><span data-page-size="200">200</span></div>');
// Listen to clicks on the page size selector:
$('.h5p-admin-pager-size-selector > span', H5PLibraryDetails.$search).on('click', function () {
H5PLibraryDetails.PAGER_SIZE = $(this).data('page-size');
$('.h5p-admin-pager-size-selector > span', H5PLibraryDetails.$search).removeClass('selected');
$(this).addClass('selected');
H5PLibraryDetails.currentPage = 0;
H5PLibraryDetails.createContentTable();
H5PLibraryDetails.updatePager();
});
};
// Initialize me:
$(document).ready(function () {
if (!H5PLibraryDetails.initialized) {
H5PLibraryDetails.initialized = true;
H5PLibraryDetails.init();
}
});
})(H5P.jQuery);