function get_content()
{
if ($this->content !== NULL) {
return $this->content;
}
global $CFG, $USER;
$this->content->text .= '<div id="textresize">';
if (isset($USER->fontsize) && accessibility_getsize($USER->fontsize) == 10) {
// Check if the decrease button should be disabled, i.e. we can't decrease any further (apply 'disabled' class and remove href if so)
$this->content->text .= '<a title="' . get_string('dectext', 'block_accessibility') . '" id="dec" class="outer disabled">';
} else {
$this->content->text .= '<a href="' . $CFG->wwwroot . '/blocks/accessibility/changesize.php?op=dec&redirect=' . $_SERVER['REQUEST_URI'] . '" title="' . get_string('dectext', 'block_accessibility') . '" id="dec" class="outer">';
}
$this->content->text .= ' <div class="middle">
<div class="inner">' . get_string('char', 'block_accessibility') . '-</div>
</div>
</a>
<a href="' . $CFG->wwwroot . '/blocks/accessibility/changesize.php?op=reset&redirect=' . $_SERVER['REQUEST_URI'] . '" title="' . get_string('resettext', 'block_accessibility') . '" id="reset" class="outer right">
<div class="middle">
<div class="inner">' . get_string('char', 'block_accessibility') . '</div>
</div>
</a>';
if (isset($USER->fontsize) && accessibility_getsize($USER->fontsize) == 26) {
// Check if the increase button should be disabled, i.e. we can't increase any further
$this->content->text .= '<a title="' . get_string('inctext', 'block_accessibility') . '" id="inc" class="outer disabled right">';
} else {
$this->content->text .= '<a href="' . $CFG->wwwroot . '/blocks/accessibility/changesize.php?op=inc&redirect=' . $_SERVER['REQUEST_URI'] . '" title="' . get_string('inctext', 'block_accessibility') . '" id="inc" class="outer right">';
}
$this->content->text .= ' <div class="middle">
<div class="inner">' . get_string('char', 'block_accessibility') . '+</div>
</div>
</a>';
if (isset($USER->fontsize) || isset($USER->colourscheme)) {
// Check if the save button should be disabled, i.e. there's no setting in $USER->fontsize that we can save
$this->content->text .= '<a id="save" href="' . $CFG->wwwroot . '/blocks/accessibility/database.php?op=save&size=true&scheme=true&redirect=' . $_SERVER['REQUEST_URI'] . '" class="outer right" title="' . get_string('save', 'block_accessibility') . '">';
} else {
$this->content->text .= '<a id="save" class="outer disabled right" title="' . get_string('save', 'block_accessibility') . '">';
}
$this->content->text .= ' <div class="middle">
<div class="inner">
<img id="saveicon" src="' . $CFG->wwwroot . '/blocks/accessibility/pix/document-save';
if (!isset($USER->fontsize) && !isset($USER->colourscheme)) {
$this->content->text .= '-grey';
}
$this->content->text .= '.png" />
</div>
</div>
</a>
</div>
<div id="colourchange">
<a href="' . $CFG->wwwroot . '/blocks/accessibility/changecolour.php?scheme=1&redirect=' . $_SERVER['REQUEST_URI'] . '" title="' . get_string('col1text', 'block_accessibility') . '" id="colour1" class="outer row">
<div class="middle">
<div class="inner">' . get_string('char', 'block_accessibility') . '</div>
</div>
</a>
<a href="' . $CFG->wwwroot . '/blocks/accessibility/changecolour.php?scheme=2&redirect=' . $_SERVER['REQUEST_URI'] . '" title="' . get_string('col2text', 'block_accessibility') . '" id="colour2" class="outer row right">
<div class="middle">
<div class="inner">' . get_string('char', 'block_accessibility') . '</div>
</div>
</a>
<a href="' . $CFG->wwwroot . '/blocks/accessibility/changecolour.php?scheme=3&redirect=' . $_SERVER['REQUEST_URI'] . '" title="' . get_string('col3text', 'block_accessibility') . '" id="colour3" class="outer row right">
<div class="middle">
<div class="inner">' . get_string('char', 'block_accessibility') . '</div>
</div>
</a>
<a href="' . $CFG->wwwroot . '/blocks/accessibility/changecolour.php?scheme=4&redirect=' . $_SERVER['REQUEST_URI'] . '" title="' . get_string('col4text', 'block_accessibility') . '" id="colour4" class="outer row right">
<div class="middle">
<div class="inner">' . get_string('char', 'block_accessibility') . '</div>
</div>
</a>
</div>
<div style="clear:both;"></div>';
require_js(array('yui_yahoo', 'yui_event', 'yui_dom', 'yui_connection', 'yui_selector', $CFG->wwwroot . '/blocks/accessibility/accessibility.js'));
// setup a couple of global javascript variables, and set the javascript's init function to run with body.onload
$this->content->text .= '<script type="text/javascript">/* <![CDATA[ */var stylesheet;var webroot="' . $CFG->wwwroot . '";YAHOO.util.Event.on(document.body, "load", accessibility_init()); /* ]]> */</script>';
$this->content->footer = '<div id="accessibility_message">';
if (isset($USER->accessabilitymsg)) {
// If there's a message to display, show it in the footer.
$this->content->footer .= $USER->accessabilitymsg;
unset($USER->accessabilitymsg);
}
$this->content->footer .= '</div>';
return $this->content;
}
// Clear the fontsize stored in the session
if (accessibility_is_ajax()) {
// If we're responding to AJAX, send back the new font size to change to
header('Content-Type: application/json');
echo '{oldfontsize: ' . accessibility_getsize($current) . ', fontsize: ' . accessibility_getsize($USER->defaultfontsize) . '}';
exit;
} else {
// Otherwise, redirect the user
redirect($CFG->wwwroot . '/blocks/accessibility/database.php?op=reset&size=true&userid=' . $USER->id . '&redirect=' . $redirect);
}
break;
default:
if (accessibility_is_ajax()) {
header('HTTP/1.0 400 Bad Request');
} else {
print_error('invalidop', 'block_accessibility');
}
exit;
break;
}
$USER->fontsize = $new;
// If we've just increased or decreased, save the new size to the session
if (accessibility_is_ajax()) {
// If we're responding to AJAX, send back the new font size to change to
header('Content-Type: application/json');
echo '{fontsize: ' . $USER->fontsize . ', defaultsize: ' . accessibility_getsize($USER->defaultfontsize) . '}';
exit;
} else {
// Otherwise, redirect the user
redirect($CFG->wwwroot . $redirect);
}
switch ($op) {
case 'inc':
if ($current == MAX_PX_FONTSIZE) {
// If we're at the upper limit, don't increase any further.
$new = accessibility_getsize($current);
} else {
// Otherwise, increase
$new = accessibility_getsize($current + 1);
}
break;
case 'dec':
if ($current == MIN_PX_FONTSIZE) {
// If we're at the lower limit, don't decrease any further.
$new = accessibility_getsize($current);
} else {
$new = accessibility_getsize($current - 1);
}
break;
case 'reset':
// Clear the fontsize stored in the session
unset($USER->fontsize);
unset($USER->defaultfontsize);
// Clear user records in database
$urlparams = array('op' => 'reset', 'size' => true, 'userid' => $USER->id);
if (!accessibility_is_ajax()) {
$redirect = required_param('redirect', PARAM_TEXT);
$urlparams['redirect'] = $redirect;
}
$redirecturl = new moodle_url('/blocks/accessibility/database.php', $urlparams);
redirect($redirecturl);
// ... REDIRECTED! EXIT