TActiveImageButton is the active control counter part to TImageButton.
When a TActiveImageButton is clicked, rather than a normal post back request a
callback request is initiated.
The {@link onCallback OnCallback} event is raised during a callback request
and it is raise after the {@link onClick OnClick} event.
protected function initializeHeaderCell($cell, $columnIndex)
{
$text = $this->getHeaderText();
if (($classPath = $this->getHeaderRenderer()) !== '') {
$control = Prado::createComponent($classPath);
if ($control instanceof \Prado\IDataRenderer) {
if ($control instanceof IItemDataRenderer) {
$item = $cell->getParent();
$control->setItemIndex($item->getItemIndex());
$control->setItemType($item->getItemType());
}
$control->setData($text);
}
$cell->getControls()->add($control);
} else {
if ($this->getAllowSorting()) {
$sortExpression = $this->getSortExpression();
if (($url = $this->getHeaderImageUrl()) !== '') {
$button = new TActiveImageButton();
$button->setImageUrl($url);
$button->setCommandName(TDataGrid::CMD_SORT);
$button->setCommandParameter($sortExpression);
if ($text !== '') {
$button->setAlternateText($text);
}
$button->setCausesValidation(false);
$cell->getControls()->add($button);
} else {
if ($text !== '') {
$button = new TActiveLinkButton();
$button->setText($text);
$button->setCommandName(TDataGrid::CMD_SORT);
$button->setCommandParameter($sortExpression);
$button->setCausesValidation(false);
$cell->getControls()->add($button);
} else {
$cell->setText(' ');
}
}
} else {
if (($url = $this->getHeaderImageUrl()) !== '') {
$image = new TActiveImage();
$image->setImageUrl($url);
if ($text !== '') {
$image->setAlternateText($text);
}
$cell->getControls()->add($image);
} else {
if ($text !== '') {
$cell->setText($text);
} else {
$cell->setText(' ');
}
}
}
}
}
public function initializeCell($cell, $columnIndex, $itemType)
{
if ($itemType === TListItemType::Item || $itemType === TListItemType::AlternatingItem || $itemType === TListItemType::SelectedItem || $itemType === TListItemType::EditItem) {
$buttonType = $this->getButtonType();
if ($buttonType === TButtonColumnType::LinkButton) {
$button = new TActiveLinkButton();
} else {
if ($buttonType === TButtonColumnType::PushButton) {
$button = new TActiveButton();
} else {
$button = new TActiveImageButton();
$button->setImageUrl($this->getImageUrl());
$button->setToolTip($this->getText());
}
}
$button->setText($this->getText());
$button->setCommandName($this->getCommandName());
$button->setCausesValidation($this->getCausesValidation());
$button->setValidationGroup($this->getValidationGroup());
if ($this->getDataTextField() !== '' || $buttonType === TButtonColumnType::ImageButton && $this->getDataImageUrlField() !== '') {
$button->attachEventHandler('OnDataBinding', array($this, 'dataBindColumn'));
}
$cell->getControls()->add($button);
$cell->registerObject('Button', $button);
} else {
parent::initializeCell($cell, $columnIndex, $itemType);
}
}
protected function createButton($commandName, $text, $causesValidation, $validationGroup)
{
if ($this->getButtonType() === TButtonColumnType::LinkButton) {
$button = new TActiveLinkButton();
} else {
if ($this->getButtonType() === TButtonColumnType::PushButton) {
$button = new TActiveButton();
} else {
$button = new TActiveImageButton();
$button->setToolTip($text);
if (strcasecmp($commandName, 'Update') === 0) {
$url = $this->getUpdateImageUrl();
} else {
if (strcasecmp($commandName, 'Cancel') === 0) {
$url = $this->getCancelImageUrl();
} else {
$url = $this->getEditImageUrl();
}
}
$button->setImageUrl($url);
}
}
$button->setText($text);
$button->setCommandName($commandName);
$button->setCausesValidation($causesValidation);
$button->setValidationGroup($validationGroup);
return $button;
}
/**
* Creates a pager button.
* Override parent implementation to create, depending on the button type, a TActiveLinkButton,
* a TActiveButton or a TActiveImageButton may be created.
*
* @param string button type, either LinkButton or PushButton
* @param boolean whether the button should be enabled
* @param string caption of the button
* @param string CommandName corresponding to the OnCommand event of the button
* @param string CommandParameter corresponding to the OnCommand event of the button
* @return mixed the button instance
*/
protected function createPagerButton($buttonType, $enabled, $text, $commandName, $commandParameter)
{
if ($buttonType === TPagerButtonType::LinkButton) {
if ($enabled) {
$button = new TActiveLinkButton();
} else {
$button = new TLabel();
$button->setText($text);
$button->setCssClass($this->getButtonCssClass());
return $button;
}
} else {
if ($buttonType === TPagerButtonType::ImageButton) {
$button = new TActiveImageButton();
$button->setImageUrl($this->getPageImageUrl($text, $commandName));
if ($enabled) {
$button->Visible = true;
} else {
$button->Visible = false;
}
} else {
$button = new TActiveButton();
if (!$enabled) {
$button->setEnabled(false);
}
}
}
if ($buttonType === TPagerButtonType::ImageButton) {
$button->ImageUrl = $text;
}
$button->setText($text);
$button->setCommandName($commandName);
$button->setCommandParameter($commandParameter);
$button->setCausesValidation(false);
$button->setCssClass($this->getButtonCssClass());
$button->attachEventHandler('OnCallback', array($this, 'handleCallback'));
$button->getAdapter()->getBaseActiveControl()->setClientSide($this->getClientSide());
return $button;
}
