415 lines
14 KiB
JavaScript
415 lines
14 KiB
JavaScript
/* Namespace for core functionality related to modal dialogs.
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*
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* Modals in Horizon are treated as a "stack", e.g new ones are added to the
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* top of the stack, and they are always removed in a last-in-first-out
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* order. This allows for things like swapping between modals as part of a
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* workflow, for confirmations, etc.
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*
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* When a new modal is loaded into the DOM, it fires a "new_modal" event which
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* event handlers can listen for. However, for consistency, it is better to
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* add methods which should be run on instantiation of any new modal to be
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* applied via the horizon.modals.addModalInitFunction method.
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*/
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horizon.modals = {
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// Storage for our current jqXHR object.
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_request: null,
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spinner: null,
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_init_functions: []
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};
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horizon.modals.addModalInitFunction = function (f) {
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horizon.modals._init_functions.push(f);
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};
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horizon.modals.initModal = function (modal) {
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$(horizon.modals._init_functions).each(function (index, f) {
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f(modal);
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});
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};
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/* Creates a modal dialog from the client-side template. */
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horizon.modals.create = function (title, body, confirm, cancel) {
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if (!cancel) {
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cancel = gettext("Cancel");
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}
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var template = horizon.templates.compiled_templates["#modal_template"],
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params = {
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title: title, body: body, confirm: confirm, cancel: cancel,
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modal_backdrop: horizon.modals.MODAL_BACKDROP
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};
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return $(template.render(params)).appendTo("#modal_wrapper");
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};
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horizon.modals.success = function (data) {
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var modal;
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var modal_wrapper = $('#modal_wrapper');
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// Moves the modal_wrapper to the bottom. This shows it over other dialogs.
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modal_wrapper.parent().append(modal_wrapper);
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modal_wrapper.append(data);
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modal = $('#modal_wrapper > .modal:last');
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modal.modal();
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$(modal).trigger("new_modal", modal);
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return modal;
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};
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horizon.modals.modal_spinner = function (text) {
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// Adds a spinner with the desired text in a modal window.
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var template = horizon.templates.compiled_templates["#spinner-modal"];
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horizon.modals.spinner = $(template.render({text: text}));
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horizon.modals.spinner.appendTo("#modal_wrapper");
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horizon.modals.spinner.modal({backdrop: 'static'});
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horizon.modals.spinner.find(".modal-body").spin(horizon.conf.spinner_options.modal);
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};
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horizon.modals.init_wizard = function () {
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// If workflow is in wizard mode, initialize wizard.
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var _max_visited_step = 0;
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var _validate_steps = function (start, end) {
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var $form = $('.workflow > form'),
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response = {};
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if (typeof end === 'undefined') {
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end = start;
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}
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// Clear old errors.
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$form.find('td.actions div.alert-danger').remove();
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$form.find('.form-group.error').each(function () {
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var $group = $(this);
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$group.removeClass('error');
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$group.find('span.help-block.error').remove();
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});
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// Send the data for validation.
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$.ajax({
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type: 'POST',
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url: $form.attr('action'),
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headers: {
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'X-Horizon-Validate-Step-Start': start,
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'X-Horizon-Validate-Step-End': end
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},
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data: $form.serialize(),
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dataType: 'json',
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async: false,
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success: function (data) { response = data; }
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});
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// Handle errors.
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if (response.has_errors) {
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var first_field = true;
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$.each(response.errors, function (step_slug, step_errors) {
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var step_id = response.workflow_slug + '__' + step_slug,
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$fieldset = $form.find('#' + step_id);
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$.each(step_errors, function (field, errors) {
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var $field;
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if (field === '__all__') {
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// Add global errors.
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$.each(errors, function (index, error) {
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$fieldset.find('td.actions').prepend(
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'<div class="alert alert-message alert-danger">' +
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error + '</div>');
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});
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$fieldset.find('input, select, textarea').first().focus();
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return;
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}
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// Add field errors.
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$field = $fieldset.find('[name="' + field + '"]');
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$field.closest('.form-group').addClass('error');
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$.each(errors, function (index, error) {
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$field.before(
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'<span class="help-block error">' +
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error + '</span>');
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});
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// Focus the first invalid field.
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if (first_field) {
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$field.focus();
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first_field = false;
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}
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});
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});
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return false;
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}
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};
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$('.workflow.wizard').bootstrapWizard({
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tabClass: 'wizard-tabs',
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nextSelector: '.button-next',
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previousSelector: '.button-previous',
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onTabShow: function (tab, navigation, index) {
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var $navs = navigation.find('li');
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var total = $navs.length;
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var current = index;
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var $footer = $('.modal-footer');
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_max_visited_step = Math.max(_max_visited_step, current);
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if (current + 1 >= total) {
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$footer.find('.button-next').hide();
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$footer.find('.button-final').show();
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} else {
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$footer.find('.button-next').show();
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$footer.find('.button-final').hide();
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}
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$navs.each(function(i) {
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var $this = $(this);
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if (i <= _max_visited_step) {
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$this.addClass('done');
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} else {
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$this.removeClass('done');
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}
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});
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},
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onNext: function ($tab, $nav, index) {
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return _validate_steps(index - 1);
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},
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onTabClick: function ($tab, $nav, current, index) {
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// Validate if moving forward, but move backwards without validation
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return (index <= current ||
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_validate_steps(current, index - 1) !== false);
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}
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});
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};
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horizon.addInitFunction(horizon.modals.init = function() {
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var $document = $(document);
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// Bind handler for initializing new modals.
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$('#modal_wrapper').on('new_modal', function (evt, modal) {
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horizon.modals.initModal(modal);
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});
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// Bind "cancel" button handler.
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$document.on('click', '.modal .cancel', function (evt) {
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$(this).closest('.modal').modal('hide');
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evt.preventDefault();
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});
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// AJAX form submissions from modals. Makes validation happen in-modal.
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$document.on('submit', '.modal form', function (evt) {
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var $form = $(this),
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form = this,
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$button = $form.find(".modal-footer .btn-primary"),
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update_field_id = $form.attr("data-add-to-field"),
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headers = {},
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modalFileUpload = $form.attr("enctype") === "multipart/form-data",
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formData, ajaxOpts, featureFileList, featureFormData;
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if (modalFileUpload) {
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featureFileList = $("<input type='file'/>").get(0).files !== undefined;
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featureFormData = window.FormData !== undefined;
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if (!featureFileList || !featureFormData) {
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// Test whether browser supports HTML5 FileList and FormData interfaces,
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// which make XHR file upload possible. If not, it doesn't
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// support setting custom headers in AJAX requests either, so
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// modal forms won't work in them (namely, IE9).
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return;
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} else {
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formData = new window.FormData(form);
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}
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} else {
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formData = $form.serialize();
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}
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evt.preventDefault();
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// Prevent duplicate form POSTs
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$button.prop("disabled", true);
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if (update_field_id) {
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headers["X-Horizon-Add-To-Field"] = update_field_id;
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}
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ajaxOpts = {
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type: "POST",
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url: $form.attr('action'),
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headers: headers,
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data: formData,
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beforeSend: function () {
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$("#modal_wrapper .modal").last().modal("hide");
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$('.ajax-modal, .dropdown-toggle').attr('disabled', true);
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horizon.modals.modal_spinner(gettext("Working"));
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},
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complete: function (jqXHR) {
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var redirect_header = jqXHR.getResponseHeader("X-Horizon-Location");
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if (redirect_header === null) {
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horizon.modals.spinner.modal('hide');
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}
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$("#modal_wrapper .modal").last().modal("show");
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$button.prop("disabled", false);
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},
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success: function (data, textStatus, jqXHR) {
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var redirect_header = jqXHR.getResponseHeader("X-Horizon-Location"),
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add_to_field_header = jqXHR.getResponseHeader("X-Horizon-Add-To-Field"),
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json_data, field_to_update;
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if (redirect_header === null) {
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$('.ajax-modal, .dropdown-toggle').removeAttr("disabled");
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}
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$form.closest(".modal").modal("hide");
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if (redirect_header) {
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location.href = redirect_header;
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}
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else if (add_to_field_header) {
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json_data = $.parseJSON(data);
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field_to_update = $("#" + add_to_field_header);
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field_to_update.append("<option value='" + json_data[0] + "'>" + json_data[1] + "</option>");
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field_to_update.change();
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field_to_update.val(json_data[0]);
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} else {
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horizon.modals.success(data, textStatus, jqXHR);
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}
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},
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error: function (jqXHR) {
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if (jqXHR.getResponseHeader('logout')) {
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location.href = jqXHR.getResponseHeader("X-Horizon-Location");
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} else {
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$('.ajax-modal, .dropdown-toggle').removeAttr("disabled");
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$form.closest(".modal").modal("hide");
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horizon.alert("danger", gettext("There was an error submitting the form. Please try again."));
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}
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}
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};
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if (modalFileUpload) {
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ajaxOpts.contentType = false; // tell jQuery not to process the data
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ajaxOpts.processData = false; // tell jQuery not to set contentType
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}
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$.ajax(ajaxOpts);
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});
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// Position modal so it's in-view even when scrolled down.
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$document.on('show.bs.modal', '.modal', function (evt) {
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// Filter out indirect triggers of "show" from (for example) tabs.
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if ($(evt.target).hasClass("modal")) {
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var scrollShift = $('body').scrollTop() || $('html').scrollTop(),
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$this = $(this),
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topVal = $this.css('top');
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$this.css('top', scrollShift + parseInt(topVal, 10));
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}
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// avoid closing the modal when escape is pressed on a select input
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$("select", evt.target).keyup(function (e) {
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if (e.keyCode === 27) {
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// remove the focus on the select, so double escape close the modal
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e.target.blur();
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e.stopPropagation();
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}
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});
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});
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// Focus the first usable form field in the modal for accessibility.
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horizon.modals.addModalInitFunction(function (modal) {
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$(modal).find(":text, select, textarea").filter(":visible:first").focus();
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});
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horizon.modals.addModalInitFunction(function(modal) {
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horizon.datatables.validate_button($(modal).find(".table_wrapper > form"));
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});
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function loadAngular(element) {
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try {
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$compile(element)($rootScope);
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$rootScope.$apply();
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} catch (err) {}
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}
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horizon.modals.addModalInitFunction(loadAngular);
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// Load modals for ajax-modal links.
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$document.on('click', '.ajax-modal', function (evt) {
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var $this = $(this);
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// If there's an existing modal request open, cancel it out.
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if (horizon.modals._request && typeof(horizon.modals._request.abort) !== undefined) {
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horizon.modals._request.abort();
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}
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horizon.modals._request = $.ajax($this.attr('href'), {
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beforeSend: function () {
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horizon.modals.modal_spinner(gettext("Loading"));
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},
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complete: function () {
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// Clear the global storage;
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horizon.modals._request = null;
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horizon.modals.spinner.modal('hide');
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},
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error: function(jqXHR) {
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if (jqXHR.status === 401){
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var redir_url = jqXHR.getResponseHeader("X-Horizon-Location");
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if (redir_url){
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location.href = redir_url;
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} else {
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location.reload(true);
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}
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}
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else {
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if (!horizon.ajax.get_messages(jqXHR)) {
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// Generic error handler. Really generic.
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horizon.alert("danger", gettext("An error occurred. Please try again later."));
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}
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}
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},
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success: function (data, textStatus, jqXHR) {
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var update_field_id = $this.attr('data-add-to-field'),
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modal,
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form;
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modal = horizon.modals.success(data, textStatus, jqXHR);
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if (update_field_id) {
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form = modal.find("form");
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if (form.length) {
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form.attr("data-add-to-field", update_field_id);
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}
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}
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}
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});
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evt.preventDefault();
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});
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/* Manage the modal "stack" */
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// After a modal has been shown, hide any other modals that are already in
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// the stack. Only one modal can be visible at the same time.
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$document.on("show.bs.modal", ".modal", function () {
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var modal_stack = $("#modal_wrapper .modal");
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modal_stack.splice(modal_stack.length - 1, 1);
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modal_stack.modal("hide");
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});
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// After a modal has been fully hidden, remove it to avoid confusion.
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// Note: the modal should only be removed if it is the "top" of the stack of
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// modals, e.g. it's the one currently being interacted with and isn't just
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// temporarily being hidden.
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$document.on('hidden.bs.modal', '.modal', function () {
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var $this = $(this),
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modal_stack = $("#modal_wrapper .modal");
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if ($this[0] === modal_stack.last()[0] || $this.hasClass("loading")) {
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$this.remove();
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if (!$this.hasClass("loading")) {
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$("#modal_wrapper .modal").last().modal("show");
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}
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}
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});
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// Make modals draggable
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$document.on("show.bs.modal", ".modal", function () {
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$(".modal-content").draggable({
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handle: ".modal-header"
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});
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});
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// Helper class to show modal spinner on click
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// In case the event was generated by clicking any mouse button,
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// the normalized codes are matched according to http://api.jquery.com/event.which/
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var MOUSE_LBUTTON_CODE_NORMALIZED = 1;
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var MOUSE_WHEEL_CODE_NORMALIZED = 2;
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$(document).on('click', '.openstack-spin', function(ev) {
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// NOTE(tsufiev): prevent infinite 'Loading' spinner when opening link
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// in the other browser tab with mouse wheel or mouse lbutton + modifier
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if ( ev.which !== MOUSE_WHEEL_CODE_NORMALIZED &&
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!( ev.which === MOUSE_LBUTTON_CODE_NORMALIZED &&
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( ev.shiftKey || ev.ctrlKey || ev.metaKey ) ) ) {
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horizon.modals.modal_spinner(gettext("Loading"));
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}
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});
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});
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