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S2OJ/web/app/models/UOJForm.php

797 lines
20 KiB
PHP
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<?php
class UOJForm {
public ?string $form_name;
public ?string $succ_href;
public $extra_validator = null;
public $handle;
private $ajax_submit_js = null;
private $run_at_server_handler = [];
private $data = [];
private $vdata = [];
private $main_html = '';
public $config = [
'is_big' => false,
'has_file' => false,
'ctrl_enter_submit' => false,
'max_post_size' => 15728640, // 15M
'max_file_size_mb' => 10, // 10M
'form' => [
'class' => '',
],
'submit_container' => [
'class' => 'mt-3 text-center',
],
'submit_button' => [
'class' => 'btn btn-primary',
'text' => '提交',
],
'back_button' => [
'href' => null,
'class' => 'btn btn-secondary',
],
'confirm' => [
'smart' => false,
'text' => null,
]
];
public function __construct($form_name) {
$this->form_name = $form_name;
$this->succ_href = UOJContext::requestURI();
$this->handle = function (&$vdata) {
};
$this->run_at_server_handler["check-{$this->form_name}"] = function () {
die(json_encode($this->validateAtServer()));
};
$this->run_at_server_handler["submit-{$this->form_name}"] = function () {
if ($this->config['no_submit']) {
UOJResponse::page404();
}
foreach ($this->data as $field) {
if (!isset($field['no_val']) && !isset($_POST[$field['name']])) {
UOJResponse::message('The form is incomplete.');
}
}
if (UOJContext::requestMethod() == 'POST') {
$len = UOJContext::contentLength();
if ($len === null) {
UOJResponse::page403();
} elseif ($len > $this->config['max_post_size']) {
UOJResponse::message('The form is too large.');
}
}
crsf_defend();
$errors = $this->validateAtServer();
if ($errors) {
$err_str = '';
foreach ($errors as $name => $err) {
$esc_err = htmlspecialchars($err);
$err_str .= "$name: $esc_err<br />";
}
UOJResponse::message($err_str);
}
$fun = $this->handle;
$fun($this->vdata);
if ($this->succ_href !== 'none') {
redirectTo($this->succ_href);
}
die();
};
}
public function setAjaxSubmit($js) {
$GLOBALS['REQUIRE_LIB']['jquery.form'] = '';
$this->ajax_submit_js = $js;
}
public function add($name, $html, $validator_php, $validator_js) {
$this->main_html .= $html;
$this->data[] = [
'name' => $name,
'validator_php' => $validator_php,
'validator_js' => $validator_js
];
}
public function addNoVal($name, $html) {
$this->main_html .= $html;
$this->data[] = array(
'name' => $name,
'validator_js' => 'always_ok',
'no_val' => ''
);
}
public function appendHTML($html) {
$this->main_html .= $html;
}
public function addHidden($name, $default_value, $validator_php, $validator_js) {
$default_value = HTML::escape($default_value);
$html = <<<EOD
<input type="hidden" name="$name" id="input-$name" value="$default_value" />
EOD;
$this->add($name, $html, $validator_php, $validator_js);
}
public function addInput($name, $config) {
$config += [
'type' => 'text',
'div_class' => '',
'input_class' => 'form-control',
'input_attrs' => [],
'input_div_class' => null,
'default_value' => '',
'label' => '',
'label_class' => 'form-label',
'placeholder' => '',
'help' => '',
'help_class' => 'form-text',
'validator_php' => function ($x) {
return '';
},
'validator_js' => null,
];
$html = '';
$html .= HTML::tag_begin('div', ['class' => $config['div_class'], 'id' => "div-$name"]);
if ($config['label']) {
$html .= HTML::tag('label', [
'class' => $config['label_class'],
'for' => "input-$name",
'id' => "label-$name"
], $config['label']);
}
if ($config['input_div_class'] !== null) {
$html .= HTML::tag_begin('div', ['class' => $config['input_div_class']]);
}
$html .= HTML::empty_tag('input', [
'class' => $config['input_class'],
'type' => $config['type'],
'name' => $name,
'id' => "input-$name",
'value' => $config['default_value'],
'placeholder' => $config['placeholder'],
] + $config['input_attrs']);
$html .= HTML::tag('div', ['class' => 'invalid-feedback', 'id' => "help-$name"], '');
if ($config['help']) {
$html .= HTML::tag('div', ['class' => $config['help_class']], $config['help']);
}
if ($config['input_div_class'] !== null) {
$html .= HTML::tag_end('div');
}
$html .= HTML::tag_end('div');
$this->add($name, $html, $config['validator_php'], $config['validator_js']);
}
public function addTextArea($name, $config) {
$config += [
'type' => 'text',
'div_class' => '',
'input_class' => 'form-control',
'input_attrs' => [],
'default_value' => '',
'label' => '',
'label_class' => 'form-label',
'placeholder' => '',
'help' => '',
'help_class' => 'form-text',
'validator_php' => function ($x) {
return '';
},
'validator_js' => null,
];
$html = '';
$html .= HTML::tag_begin('div', ['class' => $config['div_class'], 'id' => "div-$name"]);
if ($config['label']) {
$html .= HTML::tag('label', [
'class' => $config['label_class'],
'for' => "input-$name",
'id' => "label-$name"
], $config['label']);
}
$html .= HTML::tag('textarea', [
'class' => $config['input_class'],
'type' => $config['type'],
'name' => $name,
'id' => "input-$name",
'placeholder' => $config['placeholder'],
] + $config['input_attrs'], HTML::escape($config['default_value']));
$html .= HTML::tag('div', ['class' => 'invalid-feedback', 'id' => "help-$name"], '');
if ($config['help']) {
$html .= HTML::tag('div', ['class' => $config['help_class']], $config['help']);
}
$html .= HTML::tag_end('div');
$this->add($name, $html, $config['validator_php'], $config['validator_js']);
}
public function addCheckbox($name, $config) {
$config += [
'checked' => false,
'div_class' => 'form-check',
'role' => 'checkbox',
'input_class' => 'form-check-input',
'label' => '',
'label_class' => 'form-check-label',
'help' => '',
'help_class' => 'form-text',
'disabled' => false,
];
$html = '';
$html .= HTML::tag_begin('div', ['class' => $config['div_class'], 'id' => "div-$name"]);
$html .= HTML::empty_tag('input', [
'class' => $config['input_class'],
'type' => 'checkbox',
'name' => $name,
'id' => "input-$name",
'checked' => $config['checked'] ? 'checked' : null,
'value' => '1',
'disabled' => $config['disabled'] ? 'disabled' : null,
]);
$html .= HTML::tag('label', [
'class' => $config['label_class'],
'for' => "input-$name",
], $config['label']);
if ($config['help']) {
$html .= HTML::tag('div', ['class' => $config['help_class']], $config['help']);
}
$html .= HTML::tag_end('div');
$this->addNoVal($name, $html);
}
public function addSelect($name, $config) {
$config += [
'div_class' => '',
'select_class' => 'form-select',
'select_div_class' => null,
'options' => [],
'default_value' => '',
'label' => '',
'label_class' => 'form-label',
'help' => '',
'help_class' => 'form-text',
'disabled' => false,
];
$html = '';
$html .= HTML::tag_begin('div', ['id' => "div-$name", 'class' => $config['div_class']]);
// Label
if ($config['label']) {
$html .= HTML::tag('label', [
'class' => $config['label_class'],
'for' => "input-$name",
], $config['label']);
}
if ($config['select_div_class'] !== null) {
$html .= HTML::tag_begin('div', ['class' => $config['select_div_class']]);
}
// Select
$html .= HTML::tag_begin('select', ['id' => "input-$name", 'name' => $name, 'class' => $config['select_class']]);
foreach ($config['options'] as $opt_name => $opt_label) {
if ($opt_name == $config['default_value']) {
$html .= HTML::tag('option', ['value' => $opt_name, 'selected' => 'selected'], $opt_label);
} else {
$html .= HTML::tag('option', ['value' => $opt_name], $opt_label);
}
}
$html .= HTML::tag_end('select');
// Help text
if ($config['help']) {
$html .= HTML::tag('div', ['class' => $config['help_class']], $config['help']);
}
if ($config['select_div_class'] !== null) {
$html .= HTML::tag_end('div');
}
$html .= HTML::tag_end('div');
$this->add(
$name,
$html,
function ($opt) use ($config) {
return isset($config['options'][$opt]) ? '' : "无效选项";
},
null
);
}
public function addCheckboxes($name, $config) {
$config += [
'div_class' => '',
'select_class' => '',
'label' => '',
'label_class' => 'form-check-label',
'options' => [],
'default_value' => '',
'option_div_class' => 'form-check',
'option_class' => 'form-check-input',
'option_label_class' => 'form-check-label',
'help' => '',
'help_class' => 'form-text',
'disabled' => false,
];
$html = '';
$html .= HTML::tag_begin('div', ['id' => "div-$name", 'class' => $config['div_class']]);
// Label
if ($config['label']) {
$html .= HTML::tag('label', [
'class' => $config['label_class'],
'for' => "input-$name",
], $config['label']);
}
// Select
$html .= HTML::tag_begin('div', ['class' => $config['select_class']]);
foreach ($config['options'] as $opt_name => $opt_label) {
$html .= HTML::tag_begin('div', ['class' => $config['option_div_class']]);
if ($opt_name == $config['default_value']) {
$html .= HTML::empty_tag('input', [
'name' => $name,
'id' => "input-$name-$opt_name",
'class' => $config['option_class'],
'type' => 'radio',
'value' => $opt_name,
'checked' => 'checked',
]);
} else {
$html .= HTML::empty_tag('input', [
'name' => $name,
'id' => "input-$name-$opt_name",
'class' => $config['option_class'],
'type' => 'radio',
'value' => $opt_name,
]);
}
$html .= HTML::tag('label', [
'class' => $config['option_label_class'],
'for' => "input-$name-$opt_name",
], $opt_label);
$html .= HTML::tag_end('div');
}
$html .= HTML::tag_end('div');
// Help text
if ($config['help']) {
$html .= HTML::tag('div', ['class' => $config['help_class']], $config['help']);
}
$html .= HTML::tag_end('div');
$this->add(
$name,
$html,
function ($opt) use ($config) {
return isset($config['options'][$opt]) ? '' : "无效选项";
},
null
);
}
public function addSourceCodeInput($name, $config) {
$config += [
'filename' => '',
'languages' => UOJLang::getAvailableLanguages(),
'preferred_lang' => null,
];
$this->add(
"{$name}_upload_type",
'',
function ($type) use ($name) {
if ($type == 'editor') {
if (!isset($_POST["{$name}_editor"])) {
return '你在干啥……怎么什么都没交过来……？';
}
} elseif ($type == 'file') {
} else {
return '……居然既不是用编辑器上传也不是用文件上传的……= =……';
}
return '';
},
'always_ok'
);
$this->addNoVal("{$name}_editor", '');
$this->addNoVal("{$name}_file", '');
$this->add(
"{$name}_language",
'',
function ($lang) use ($config) {
if (!isset($config['languages'][$lang])) {
return '该语言不被支持';
}
return '';
},
'always_ok'
);
if ($config['preferred_lang'] == null || !isset($config['languages'][$config['preferred_lang']])) {
$config['preferred_lang'] = Cookie::get('uoj_preferred_language');
}
if ($config['preferred_lang'] == null || !isset($config['languages'][$config['preferred_lang']])) {
$config['preferred_lang'] = UOJLang::$default_preferred_language;
}
$langs_options_str = '';
foreach ($config['languages'] as $lang_code => $lang_display) {
$langs_options_str .= HTML::option($lang_code, $lang_display, $lang_code == $config['preferred_lang']);
}
$text = json_encode(UOJLocale::get('problems::source code') . ': ' . HTML::tag('code', [], $config['filename']));
$langs_options_json = json_encode($langs_options_str);
$this->appendHTML(<<<EOD
<div class="form-group mb-3" id="form-group-$name"></div>
<script type="text/javascript">
$('#form-group-$name').source_code_form_group('$name', $text, $langs_options_json);
</script>
EOD);
$this->config['is_big'] = true;
$this->config['has_file'] = true;
}
public function addTextFileInput($name, $config) {
$config += [
'filename' => '',
];
$this->add(
"{$name}_upload_type",
'',
function ($type, &$vdata) use ($name) {
if ($type == 'editor') {
if (!isset($_POST["{$name}_editor"])) {
return '你在干啥……怎么什么都没交过来……？';
}
} elseif ($type == 'file') {
} else {
return '……居然既不是用编辑器上传也不是用文件上传的……= =……';
}
},
'always_ok'
);
$this->addNoVal("{$name}_editor", '');
$this->addNoVal("{$name}_file", '');
$text = json_encode(UOJLocale::get('problems::text file') . ': ' . HTML::tag('code', [], $config['filename']));
$this->appendHTML(<<<EOD
<div class="form-group mb-3" id="form-group-$name"></div>
<script type="text/javascript">
$('#form-group-$name').text_file_form_group('$name', $text);
</script>
EOD);
$this->config['is_big'] = true;
$this->config['has_file'] = true;
}
public function addMarkdownEditor($name, $config = []) {
$config += [
'div_class' => '',
'default_value' => '',
'label' => '',
'label_class' => 'form-label',
'placeholder' => '',
'help' => '',
'help_class' => 'form-text',
'validator_php' => function ($str, &$vdata) {
return '';
},
'validator_js' => null,
];
$html = '';
$html .= HTML::tag_begin('div', ['class' => $config['div_class'], 'id' => "div-$name"]);
$default_value = json_encode($config['default_value']);
if ($config['label']) {
$html .= HTML::tag('label', [
'class' => $config['label_class'],
'for' => "input-$name",
'id' => "label-$name"
], $config['label']);
}
$html .= <<<EOD
<div id="{$name}-markdown-input-container"></div>
<script>
$('#{$name}-markdown-input-container').markdown_input_editor("{$name}", "default", {$default_value});
</script>
EOD;
if ($config['help']) {
$html .= HTML::tag('div', ['class' => $config['help_class']], $config['help']);
}
$html .= HTML::tag_end('div');
$this->add($name, $html, $config['validator_php'], $config['validator_js']);
}
public function printHTML() {
echo HTML::tag_begin('form', [
'action' => UOJContext::requestURI(),
'method' => 'POST',
'class' => $this->config['form']['class'],
'id' => "form-{$this->form_name}",
'enctype' => $this->config['is_big'] ? 'multipart/form-data' : 'application/x-www-form-urlencoded',
]);
echo HTML::hiddenToken();
echo $this->main_html;
if (!$this->config['no_submit']) {
echo HTML::tag_begin('div', ['class' => $this->config['submit_container']['class']]);
if ($this->config['back_button']['href'] !== null) {
echo HTML::tag('a', [
'class' => $this->config['back_button']['class'],
'href' => $this->config['back_button']['href']
], '返回');
}
echo HTML::tag('button', [
'type' => 'submit',
'id' => "button-submit-{$this->form_name}",
'name' => "submit-{$this->form_name}",
'value' => $this->form_name,
'class' => $this->config['submit_button']['class']
], $this->config['submit_button']['text']);
echo HTML::tag_end('div');
}
echo HTML::tag_end('form');
if ($this->config['no_submit']) {
return;
}
echo <<<EOD
<script type="text/javascript">
$(document).ready(function() {
EOD;
if ($this->config['ctrl_enter_submit']) {
echo <<<EOD
$('#form-{$this->form_name}').keydown(function(e) {
if (e.keyCode == 13 && e.ctrlKey) {
$('#button-submit-{$this->form_name}').click();
}
});
EOD;
}
echo <<<EOD
$('#form-{$this->form_name}').submit(function(e) {
var ok = true;
EOD;
$need_ajax = false;
if ($this->extra_validator) {
$need_ajax = true;
}
foreach ($this->data as $field) {
if ($field['validator_js'] != null) {
if ($field['validator_js'] != 'always_ok') {
echo <<<EOD
var {$field['name']}_err = ({$field['validator_js']})($('#input-{$field['name']}').val());
EOD;
}
} else {
$need_ajax = true;
}
}
if ($need_ajax) {
echo <<<EOD
var post_data = {};
EOD;
foreach ($this->data as $field) {
if ($field['validator_js'] == null) {
echo <<<EOD
var {$field['name']}_err = 'Unknown error';
post_data.{$field['name']} = $('#input-{$field['name']}').val();
EOD;
}
}
echo <<<EOD
post_data['check-{$this->form_name}'] = "";
$.ajax({
url: '{$_SERVER['REQUEST_URI']}',
type: 'POST',
dataType: 'json',
async: false,
data: post_data,
success: function(data) {
EOD;
foreach ($this->data as $field) {
if ($field['validator_js'] == null) {
echo <<<EOD
{$field['name']}_err = data.${field['name']};
EOD;
}
}
echo <<<EOD
if (data.extra != undefined) {
alert(data.extra);
ok = false;
}
}
});
EOD;
}
foreach ($this->data as $field) {
if ($field['validator_js'] != 'always_ok') {
echo <<<EOD
if ({$field['name']}_err) {
$('#div-{$field['name']}').addClass('has-validation has-error');
$('#div-{$field['name']}').addClass('is-invalid');
$('#input-{$field['name']}').addClass('is-invalid');
$('#help-{$field['name']}').text({$field['name']}_err);
ok = false;
} else {
$('#div-{$field['name']}').removeClass('has-validation has-error');
$('#div-{$field['name']}').removeClass('is-invalid');
$('#input-{$field['name']}').removeClass('is-invalid');
$('#help-{$field['name']}').text('');
}
EOD;
}
}
if ($this->config['confirm']['smart']) {
$this->config['confirm']['text'] = '你真的要' . $this->config['submit_button']['text'] . '吗？';
}
if ($this->config['confirm']['text']) {
echo <<<EOD
if (!confirm('{$this->config['confirm']['text']}')) {
ok = false;
}
EOD;
}
if ($this->config['has_file']) {
echo <<<EOD
$(this).find("input[type='file']").each(function() {
for (var i = 0; i < this.files.length; i++) {
if (this.files[i].size > {$this->config['max_file_size_mb']} * 1024 * 1024) {
$('#div-' + $(this).attr('name')).addClass('has-validation has-error');
$('#div-' + $(this).attr('name')).addClass('is-invalid');
$('#input-' + $(this).attr('name')).addClass('is-invalid');
$('#help-' + $(this).attr('name')).text('文件大小不能超过 {$this->config['max_file_size_mb']} MB');
ok = false;
} else {
$('#div-' + $(this).attr('name')).removeClass('has-validation has-error');
$('#div-' + $(this).attr('name')).removeClass('is-invalid');
$('#input-' + $(this).attr('name')).removeClass('is-invalid');
$('#help-' + $(this).attr('name')).text('');
}
}
});
EOD;
}
if ($this->ajax_submit_js !== null) {
echo <<<EOD
e.preventDefault();
if (ok) {
$(this).ajaxSubmit({
beforeSubmit: function(formData) {
formData.push({name: 'submit-{$this->form_name}', value: '{$this->form_name}', type: 'submit'});
},
success: {$this->ajax_submit_js}
});
}
EOD;
} else {
echo <<<EOD
if (ok) {
$("#button-submit-{$this->form_name}")
.addClass('disabled')
.css('width', $("#button-submit-{$this->form_name}").outerWidth())
.html('<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>');
$(this).submit(function () {
return false;
});
}
return ok;
EOD;
}
echo <<<EOD
});
});
</script>
EOD;
}
private function validateAtServer() {
$errors = array();
if ($this->extra_validator) {
$fun = $this->extra_validator;
$err = $fun();
if ($err) {
$errors['extra'] = $err;
}
}
foreach ($this->data as $field) {
if (!isset($field['no_val']) && isset($_POST[$field['name']])) {
$fun = $field['validator_php'];
$ret = $fun($_POST[$field['name']], $this->vdata, $field['name']);
if (is_array($ret) && isset($ret['error'])) {
$err = $ret['error'];
} else {
$err = $ret;
}
if ($err) {
$errors[$field['name']] = $err;
}
if (is_array($ret) && isset($ret['store'])) {
$this->vdata[$field['name']] = $ret['store'];
}
}
}
return $errors;
}
public function runAtServer() {
foreach ($this->run_at_server_handler as $type => $handler) {
if (isset($_POST[$type])) {
$handler();
}
}
}
static public function uploadedFileTmpName($name) {
if (isset($_FILES[$name]) && is_uploaded_file($_FILES[$name]['tmp_name'])) {
return $_FILES[$name]['tmp_name'];
} else {
return null;
}
}
}
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