149 lines
4.7 KiB
PHP
149 lines
4.7 KiB
PHP
<?php
|
|
// $Header: /cvsroot/html2ps/box.button.php,v 1.29 2007/01/24 18:55:43 Konstantin Exp $
|
|
/**
|
|
* @package HTML2PS
|
|
* @subpackage Document
|
|
*
|
|
* This file contains the class desribing layout and behavior of 'input type="button"'
|
|
* elements
|
|
*/
|
|
|
|
/**
|
|
* @package HTML2PS
|
|
* @subpackage Document
|
|
*
|
|
* The ButtonBox class desribes the HTML buttons layout. (Note that
|
|
* button elements have 'display' CSS property set to HTML2PS-specific
|
|
* '-button' value )
|
|
*
|
|
* @link http://www.w3.org/TR/html4/interact/forms.html#h-17.4 HTML 4.01 The INPUT element
|
|
*/
|
|
class ButtonBox extends InlineControlBox {
|
|
function get_max_width(&$context, $limit = 10E6) {
|
|
return
|
|
GenericContainerBox::get_max_width($context, $limit);
|
|
}
|
|
|
|
/**
|
|
* Create a new button element
|
|
*
|
|
* @param string $text text to be rendered on the button
|
|
*/
|
|
function ButtonBox() {
|
|
$this->InlineControlBox();
|
|
}
|
|
|
|
/**
|
|
* Create a new button element from the DOM tree element
|
|
*
|
|
* @param DOMElement $root pointer to the DOM tree element corresponding to the button.
|
|
*
|
|
* @return ButtonBox new button element
|
|
*/
|
|
function &create(&$root, &$pipeline) {
|
|
/**
|
|
* Button text is defined by its 'value' attrubute;
|
|
* if this attribute is not specified, we should provide some
|
|
* appropriate defaults depending on the exact button type:
|
|
* reset, submit or generic button.
|
|
*
|
|
* Default button text values are specified in config file config.inc.php.
|
|
*
|
|
* @see config.inc.php
|
|
* @see DEFAULT_SUBMIT_TEXT
|
|
* @see DEFAULT_RESET_TEXT
|
|
* @see DEFAULT_BUTTON_TEXT
|
|
*/
|
|
if ($root->has_attribute("value")) {
|
|
$text = $root->get_attribute("value");
|
|
} else {
|
|
$text = DEFAULT_BUTTON_TEXT;
|
|
};
|
|
|
|
$box =& new ButtonBox();
|
|
$box->readCSS($pipeline->getCurrentCSSState());
|
|
|
|
/**
|
|
* If button width is not constrained, then we'll add some space around the button text
|
|
*/
|
|
$text = " ".$text." ";
|
|
|
|
$box->_setup($text, $pipeline);
|
|
|
|
return $box;
|
|
}
|
|
|
|
function _setup($text, &$pipeline) {
|
|
/**
|
|
* Contents of the text box are somewhat similar to the inline box:
|
|
* a sequence of the text and whitespace boxes; we generate this sequence using
|
|
* the InlineBox, then copy contents of the created inline box to our button.
|
|
*
|
|
* @todo probably, create_from_text() function should be extracted to the common parent
|
|
* of inline boxes.
|
|
*/
|
|
$ibox = InlineBox::create_from_text($text, WHITESPACE_PRE, $pipeline);
|
|
|
|
$size = count($ibox->content);
|
|
for ($i=0; $i<$size; $i++) {
|
|
$this->add_child($ibox->content[$i]);
|
|
};
|
|
|
|
/**
|
|
* Button height includes vertical padding (e.g. the following two buttons
|
|
* <input type="button" value="test" style="padding: 10px; height: 50px;"/>
|
|
* <input type="button" value="test" style="padding: 0px; height: 30px;"/>
|
|
* are render by browsers with the same height!), so we'll need to adjust the
|
|
* height constraint, subtracting the vertical padding value from the constraint
|
|
* height value.
|
|
*/
|
|
$hc = $this->get_height_constraint();
|
|
if (!is_null($hc->constant)) {
|
|
$hc->constant[0] -= $this->get_padding_top() + $this->get_padding_bottom();
|
|
};
|
|
$this->put_height_constraint($hc);
|
|
}
|
|
|
|
/**
|
|
* Render the form field corresponding to this button
|
|
* (Will be overridden by subclasses; they may render more specific button types)
|
|
*
|
|
* @param OutputDriver $driver The output driver object
|
|
*/
|
|
function _render_field(&$driver) {
|
|
$driver->field_pushbutton($this->get_left_padding(),
|
|
$this->get_top_padding(),
|
|
$this->get_width() + $this->get_padding_left() + $this->get_padding_right(),
|
|
$this->get_height() + $this->get_padding_top() + $this->get_padding_bottom());
|
|
}
|
|
|
|
/**
|
|
* Render the button using the specified output driver
|
|
*
|
|
* @param OutputDriver $driver The output driver object
|
|
*
|
|
* @return boolean flag indicating an error (null value) or success (true)
|
|
*/
|
|
function show(&$driver) {
|
|
/**
|
|
* Set the baseline of a button box so that the button text will be aligned with
|
|
* the line box baseline
|
|
*/
|
|
$this->default_baseline = $this->content[0]->baseline + $this->get_extra_top();
|
|
$this->baseline = $this->content[0]->baseline + $this->get_extra_top();
|
|
|
|
|
|
/**
|
|
* Render the interactive button (if requested and possible)
|
|
*/
|
|
if ($GLOBALS['g_config']['renderforms']) {
|
|
$status = GenericContainerBox::show($driver);
|
|
$this->_render_field($driver);
|
|
} else {
|
|
$status = GenericContainerBox::show($driver);
|
|
};
|
|
|
|
return $status;
|
|
}
|
|
}
|
|
?>
|