Differential D20692 Diff 49352 src/applications/phortune/pdf/PhabricatorPDFObject.php

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src/applications/phortune/pdf/PhabricatorPDFObject.php

This file was added.

				<?php

				abstract class PhabricatorPDFObject
				extends PhabricatorPDFFragment {

				private $generator;
				private $objectIndex;
				private $children = array();
				private $streams = array();

				final public function hasRefTableEntry() {
				return true;
				}

				final protected function writeFragment() {
				$this->writeLine('%d 0 obj', $this->getObjectIndex());
				$this->writeLine('<<');
				$this->writeObject();
				$this->writeLine('>>');

				$streams = $this->streams;
				$this->streams = array();
				foreach ($streams as $stream) {
				$this->writeLine('stream');
				$this->writeLine('%s', $stream);
				$this->writeLine('endstream');
				}

				$this->writeLine('endobj');
				}

				final public function setGenerator(
				PhabricatorPDFGenerator $generator,
				$index) {

				if ($this->getGenerator()) {
				throw new Exception(
				pht(
				'This PDF object is already registered with a PDF generator. You '.
				'can not register an object with more than one generator.'));
				}

				$this->generator = $generator;
				$this->objectIndex = $index;

				foreach ($this->getChildren() as $child) {
				$generator->addObject($child);
				}

				return $this;
				}

				final public function getGenerator() {
				return $this->generator;
				}

				final public function getObjectIndex() {
				if (!$this->objectIndex) {
				throw new Exception(
				pht(
				'Trying to get index for object ("%s") which has not been '.
				'registered with a generator.',
				get_class($this)));
				}

				return $this->objectIndex;
				}

				final protected function newChildObject(PhabricatorPDFObject $object) {
				if ($this->generator) {
				throw new Exception(
				pht(
				'Trying to add a new PDF Object child after already registering '.
				'the object with a generator.'));
				}

				$this->children[] = $object;
				return $object;
				}

				private function getChildren() {
				return $this->children;
				}

				abstract protected function writeObject();

				final protected function newStream($raw_data) {
				$stream_data = gzcompress($raw_data);

				$this->streams[] = $stream_data;

				return strlen($stream_data);
				}

				}