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DifferentialFieldSpecification.php
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			<?php

			/**
			* Describes and implements the behavior for a custom field on Differential
			* revisions. Along with other configuration, you can extend this class to add
			* custom fields to Differential revisions and commit messages.
			*
			* Generally, you should implement all methods from the storage task and then
			* the methods from one or more interface tasks.
			*
			* @task storage Field Storage
			* @task edit Extending the Revision Edit Interface
			* @task view Extending the Revision View Interface
			* @task list Extending the Revision List Interface
			* @task mail Extending the E-mail Interface
			* @task conduit Extending the Conduit View Interface
			* @task commit Extending Commit Messages
			* @task load Loading Additional Data
			* @task context Contextual Data
			*/
			abstract class DifferentialFieldSpecification {

			private $revision;
			private $diff;
			private $manualDiff;
			private $handles;
			private $diffProperties;
			private $user;


			/* -( Storage )------------------------------------------------------------ */


			/**
			* Return a unique string used to key storage of this field's value, like
			* "mycompany.fieldname" or similar. You can return null (the default) to
			* indicate that this field does not use any storage. This is appropriate for
			* display fields, like @{class:DifferentialLinesFieldSpecification}. If you
			* implement this, you must also implement @{method:getValueForStorage} and
			* @{method:setValueFromStorage}.
			*
			* @return string\|null Unique key which identifies this field in auxiliary
			* field storage. Maximum length is 32. Alternatively,
			* null (default) to indicate that this field does not
			* use auxiliary field storage.
			* @task storage
			*/
			public function getStorageKey() {
			return null;
			}


			/**
			* Return a serialized representation of the field value, appropriate for
			* storing in auxiliary field storage. You must implement this method if
			* you implement @{method:getStorageKey}.
			*
			* @return string Serialized field value.
			* @task storage
			*/
			public function getValueForStorage() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* Set the field's value given a serialized storage value. This is called
			* when the field is loaded; if no data is available, the value will be
			* null. You must implement this method if you implement
			* @{method:getStorageKey}.
			*
			* @param string\|null Serialized field representation (from
			* @{method:getValueForStorage}) or null if no value has
			* ever been stored.
			* @return this
			* @task storage
			*/
			public function setValueFromStorage($value) {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/* -( Extending the Revision Edit Interface )------------------------------ */


			/**
			* Determine if this field should appear on the "Edit Revision" interface. If
			* you return true from this method, you must implement
			* @{method:setValueFromRequest}, @{method:renderEditControl} and
			* @{method:validateField}.
			*
			* For a concrete example of a field which implements an edit interface, see
			* @{class:DifferentialRevertPlanFieldSpecification}.
			*
			* @return bool True to indicate that this field implements an edit interface.
			* @task edit
			*/
			public function shouldAppearOnEdit() {
			return false;
			}


			/**
			* Set the field's value from an HTTP request. Generally, you should read
			* the value of some field name you emitted in @{method:renderEditControl}
			* and save it into the object, e.g.:
			*
			* $this->value = $request->getStr('my-custom-field');
			*
			* If you have some particularly complicated field, you may need to read
			* more data; this is why you have access to the entire request.
			*
			* You must implement this if you implement @{method:shouldAppearOnEdit}.
			*
			* You should not perform field validation here; instead, you should implement
			* @{method:validateField}.
			*
			* @param AphrontRequest HTTP request representing a user submitting a form
			* with this field in it.
			* @return this
			* @task edit
			*/
			public function setValueFromRequest(AphrontRequest $request) {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* Build a renderable object (generally, some @{class:AphrontFormControl})
			* which can be appended to a @{class:AphrontFormView} and represents the
			* interface the user sees on the "Edit Revision" screen when interacting
			* with this field.
			*
			* For example:
			*
			* return id(new AphrontFormTextControl())
			* ->setLabel('Custom Field')
			* ->setName('my-custom-key')
			* ->setValue($this->value);
			*
			* You must implement this if you implement @{method:shouldAppearOnEdit}.
			*
			* @return AphrontView\|string Something renderable.
			* @task edit
			*/
			public function renderEditControl() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* Optionally, build a preview panel for the field which will appear on the
			* edit interface. This is used for the "Summary" field, but custom fields
			* generally need not implement it.
			*
			* @return AphrontView\|string Something renderable.
			* @task edit
			*/
			public function renderEditPreview() {
			return null;
			}


			/**
			* This method will be called after @{method:setValueFromRequest} but before
			* the field is saved. It gives you an opportunity to inspect the field value
			* and throw a @{class:DifferentialFieldValidationException} if there is a
			* problem with the value the user has provided (for example, the value the
			* user entered is not correctly formatted). This method is also called after
			* @{method:setValueFromParsedCommitMessage} before the revision is saved.
			*
			* By default, fields are not validated.
			*
			* @return void
			* @task edit
			*/
			public function validateField() {
			return;
			}

			/**
			* Determine if user mentions should be extracted from the value and added to
			* CC when creating revision. Mentions are then extracted from the string
			* returned by @{method:renderValueForCommitMessage}.
			*
			* By default, mentions are not extracted.
			*
			* @return bool
			* @task edit
			*/
			public function shouldExtractMentions() {
			return false;
			}


			/* -( Extending the Revision View Interface )------------------------------ */


			/**
			* Determine if this field should appear on the revision detail view
			* interface. One use of this interface is to add purely informational
			* fields to the revision view, without any sort of backing storage.
			*
			* If you return true from this method, you must implement the methods
			* @{method:renderLabelForRevisionView} and
			* @{method:renderValueForRevisionView}.
			*
			* @return bool True if this field should appear when viewing a revision.
			* @task view
			*/
			public function shouldAppearOnRevisionView() {
			return false;
			}


			/**
			* Return a string field label which will appear in the revision detail
			* table.
			*
			* You must implement this method if you return true from
			* @{method:shouldAppearOnRevisionView}.
			*
			* @return string Label for field in revision detail view.
			* @task view
			*/
			public function renderLabelForRevisionView() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* Return a markup block representing the field for the revision detail
			* view. Note that you can return null to suppress display (for instance,
			* if the field shows related objects of some type and the revision doesn't
			* have any related objects).
			*
			* You must implement this method if you return true from
			* @{method:shouldAppearOnRevisionView}.
			*
			* @return string\|null Display markup for field value, or null to suppress
			* field rendering.
			* @task view
			*/
			public function renderValueForRevisionView() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* Load users, their current statuses and return a markup with links to the
			* user profiles and information about their current status.
			*
			* @return string Display markup.
			* @task view
			*/
			public function renderUserList(array $user_phids) {
			if (!$user_phids) {
			return phutil_tag('em', array(), pht('None'));
			}

			return implode_selected_handle_links(', ',
			$this->getLoadedHandles(), $user_phids);
			}


			/**
			* Return a markup block representing a warning to display with the comment
			* box when preparing to accept a diff. A return value of null indicates no
			* warning box should be displayed for this field.
			*
			* @return string\|null Display markup for warning box, or null for no warning
			*/
			public function renderWarningBoxForRevisionAccept() {
			return null;
			}


			/* -( Extending the Revision List Interface )------------------------------ */


			/**
			* Determine if this field should appear in the table on the revision list
			* interface.
			*
			* @return bool True if this field should appear in the table.
			*
			* @task list
			*/
			public function shouldAppearOnRevisionList() {
			return false;
			}


			/**
			* Return a column header for revision list tables.
			*
			* @return string Column header.
			*
			* @task list
			*/
			public function renderHeaderForRevisionList() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* Optionally, return a column class for revision list tables.
			*
			* @return string CSS class for table cells.
			*
			* @task list
			*/
			public function getColumnClassForRevisionList() {
			return null;
			}


			/**
			* Return a table cell value for revision list tables.
			*
			* @param DifferentialRevision The revision to render a value for.
			* @return string Table cell value.
			*
			* @task list
			*/
			public function renderValueForRevisionList(DifferentialRevision $revision) {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/* -( Extending the Diff View Interface )------------------------------ */


			/**
			* Determine if this field should appear on the diff detail view
			* interface. One use of this interface is to add purely informational
			* fields to the diff view, without any sort of backing storage.
			*
			* NOTE: These diffs are not necessarily attached yet to a revision.
			* As such, a field on the diff view can not rely on the existence of a
			* revision or use storage attached to the revision.
			*
			* If you return true from this method, you must implement the methods
			* @{method:renderLabelForDiffView} and
			* @{method:renderValueForDiffView}.
			*
			* @return bool True if this field should appear when viewing a diff.
			* @task view
			*/
			public function shouldAppearOnDiffView() {
			return false;
			}


			/**
			* Return a string field label which will appear in the diff detail
			* table.
			*
			* You must implement this method if you return true from
			* @{method:shouldAppearOnDiffView}.
			*
			* @return string Label for field in revision detail view.
			* @task view
			*/
			public function renderLabelForDiffView() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* Return a markup block representing the field for the diff detail
			* view. Note that you can return null to suppress display (for instance,
			* if the field shows related objects of some type and the revision doesn't
			* have any related objects).
			*
			* You must implement this method if you return true from
			* @{method:shouldAppearOnDiffView}.
			*
			* @return string\|null Display markup for field value, or null to suppress
			* field rendering.
			* @task view
			*/
			public function renderValueForDiffView() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/* -( Extending the E-mail Interface )------------------------------------- */


			/**
			* Return plain text to render in e-mail messages. The text may span
			* multiple lines.
			*
			* @return int One of DifferentialMailPhase constants.
			* @return string\|null Plain text, or null for no message.
			*
			* @task mail
			*/
			public function renderValueForMail($phase) {
			return null;
			}


			/* -( Extending the Conduit Interface )------------------------------------ */


			/**
			* @task conduit
			*/
			public function shouldAppearOnConduitView() {
			return false;
			}

			/**
			* @task conduit
			*/
			public function getValueForConduit() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}

			/**
			* @task conduit
			*/
			public function getKeyForConduit() {
			$key = $this->getStorageKey();
			if ($key === null) {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}
			return $key;
			}

			/* -( Extending the Search Interface )------------------------------------ */

			/**
			* @task search
			*/
			public function shouldAddToSearchIndex() {
			return false;
			}

			/**
			* @task search
			*/
			public function getValueForSearchIndex() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}

			/**
			* NOTE: Keys must be 4 characters for
			* @{class:PhabricatorSearchEngineMySQL}.
			*
			* @task search
			*/
			public function getKeyForSearchIndex() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}

			/* -( Extending Commit Messages )------------------------------------------ */


			/**
			* Determine if this field should appear in commit messages. You should return
			* true if this field participates in any part of the commit message workflow,
			* even if it is not rendered by default.
			*
			* If you implement this method, you must implement
			* @{method:getCommitMessageKey} and
			* @{method:setValueFromParsedCommitMessage}.
			*
			* @return bool True if this field appears in commit messages in any capacity.
			* @task commit
			*/
			public function shouldAppearOnCommitMessage() {
			return false;
			}

			/**
			* Key which identifies this field in parsed commit messages. Commit messages
			* exist in two forms: raw textual commit messages and parsed dictionaries of
			* fields. This method must return a unique string which identifies this field
			* in dictionaries. Principally, this dictionary is shipped to and from arc
			* over Conduit. Keys should be appropriate property names, like "testPlan"
			* (not "Test Plan") and must be globally unique.
			*
			* You must implement this method if you return true from
			* @{method:shouldAppearOnCommitMessage}.
			*
			* @return string Key which identifies the field in dictionaries.
			* @task commit
			*/
			public function getCommitMessageKey() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}

			/**
			* Set this field's value from a value in a parsed commit message dictionary.
			* Afterward, this field will go through the normal write workflows and the
			* change will be permanently stored via either the storage mechanisms (if
			* your field implements them), revision write hooks (if your field implements
			* them) or discarded (if your field implements neither, e.g. is just a
			* display field).
			*
			* The value you receive will either be null or something you originally
			* returned from @{method:parseValueFromCommitMessage}.
			*
			* You must implement this method if you return true from
			* @{method:shouldAppearOnCommitMessage}.
			*
			* @param mixed Field value from a parsed commit message dictionary.
			* @return this
			* @task commit
			*/
			public function setValueFromParsedCommitMessage($value) {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}

			/**
			* In revision control systems which read revision information from the
			* working copy, the user may edit the commit message outside of invoking
			* "arc diff --edit". When they do this, only some fields (those fields which
			* can not be edited by other users) are safe to overwrite. For instance, it
			* is fine to overwrite "Summary" because no one else can edit it, but not
			* to overwrite "Reviewers" because reviewers may have been added or removed
			* via the web interface.
			*
			* If a field is safe to overwrite when edited in a working copy commit
			* message, return true. If the authoritative value should always be used,
			* return false. By default, fields can not be overwritten.
			*
			* arc will only attempt to overwrite field values if run with "--verbatim".
			*
			* @return bool True to indicate the field is save to overwrite.
			* @task commit
			*/
			public function shouldOverwriteWhenCommitMessageIsEdited() {
			return false;
			}

			/**
			* Return true if this field should be suggested to the user during
			* "arc diff --edit". Basicially, return true if the field is something the
			* user might want to fill out (like "Summary"), and false if it's a
			* system/display/readonly field (like "Differential Revision"). If this
			* method returns true, the field will be rendered even if it has no value
			* during edit and update operations.
			*
			* @return bool True to indicate the field should appear in the edit template.
			* @task commit
			*/
			public function shouldAppearOnCommitMessageTemplate() {
			return true;
			}

			/**
			* Render a human-readable label for this field, like "Summary" or
			* "Test Plan". This is distinct from the commit message key, but generally
			* they should be similar.
			*
			* @return string Human-readable field label for commit messages.
			* @task commit
			*/
			public function renderLabelForCommitMessage() {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}

			/**
			* Render a human-readable value for this field when it appears in commit
			* messages (for instance, lists of users should be rendered as user names).
			*
			* The ##$is_edit## parameter allows you to distinguish between commit
			* messages being rendered for editing and those being rendered for amending
			* or commit. Some fields may decline to render a value in one mode (for
			* example, "Reviewed By" appears only when doing commit/amend, not while
			* editing).
			*
			* @param bool True if the message is being edited.
			* @return string Human-readable field value.
			* @task commit
			*/
			public function renderValueForCommitMessage($is_edit) {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}

			/**
			* Return one or more labels which this field parses in commit messages. For
			* example, you might parse all of "Task", "Tasks" and "Task Numbers" or
			* similar. This is just to make it easier to get commit messages to parse
			* when users are typing in the fields manually as opposed to using a
			* template, by accepting alternate spellings / pluralizations / etc. By
			* default, only the label returned from @{method:renderLabelForCommitMessage}
			* is parsed.
			*
			* @return list List of supported labels that this field can parse from commit
			* messages.
			* @task commit
			*/
			public function getSupportedCommitMessageLabels() {
			return array($this->renderLabelForCommitMessage());
			}

			/**
			* Parse a raw text block from a commit message into a canonical
			* representation of the field value. For example, the "CC" field accepts a
			* comma-delimited list of usernames and emails and parses them into valid
			* PHIDs, emitting a PHID list.
			*
			* If you encounter errors (like a nonexistent username) while parsing,
			* you should throw a @{class:DifferentialFieldParseException}.
			*
			* Generally, this method should accept whatever you return from
			* @{method:renderValueForCommitMessage} and parse it back into a sensible
			* representation.
			*
			* You must implement this method if you return true from
			* @{method:shouldAppearOnCommitMessage}.
			*
			* @param string
			* @return mixed The canonical representation of the field value. For example,
			* you should lookup usernames and object references.
			* @task commit
			*/
			public function parseValueFromCommitMessage($value) {
			throw new DifferentialFieldSpecificationIncompleteException($this);
			}


			/**
			* This method allows you to take action when a commit appears in a tracked
			* branch (for example, by closing tasks associated with the commit).
			*
			* @param PhabricatorRepository The repository the commit appeared in.
			* @param PhabricatorRepositoryCommit The commit itself.
			* @param PhabricatorRepostioryCommitData Commit data.
			* @return void
			*
			* @task commit
			*/
			public function didParseCommit(
			PhabricatorRepository $repo,
			PhabricatorRepositoryCommit $commit,
			PhabricatorRepositoryCommitData $data) {
			return;
			}

			public function getCommitMessageTips() {
			return array();
			}


			/* -( Loading Additional Data )-------------------------------------------- */


			/**
			* Specify which @{class:PhabricatorObjectHandle}s need to be loaded for your
			* field to render correctly.
			*
			* This is a convenience method which makes the handles available on all
			* interfaces where the field appears. If your field needs handles on only
			* some interfaces (or needs different handles on different interfaces) you
			* can overload the more specific methods to customize which interfaces you
			* retrieve handles for. Requesting only the handles you need will improve
			* the performance of your field.
			*
			* You can later retrieve these handles by calling @{method:getHandle}.
			*
			* @return list List of PHIDs to load handles for.
			* @task load
			*/
			protected function getRequiredHandlePHIDs() {
			return array();
			}


			/**
			* Specify which @{class:PhabricatorObjectHandle}s need to be loaded for your
			* field to render correctly on the view interface.
			*
			* This is a more specific version of @{method:getRequiredHandlePHIDs} which
			* can be overridden to improve field performance by loading only data you
			* need.
			*
			* @return list List of PHIDs to load handles for.
			* @task load
			*/
			public function getRequiredHandlePHIDsForRevisionView() {
			return $this->getRequiredHandlePHIDs();
			}


			/**
			* Specify which @{class:PhabricatorObjectHandle}s need to be loaded for your
			* field to render correctly on the list interface.
			*
			* This is a more specific version of @{method:getRequiredHandlePHIDs} which
			* can be overridden to improve field performance by loading only data you
			* need.
			*
			* @param DifferentialRevision The revision to pull PHIDs for.
			* @return list List of PHIDs to load handles for.
			* @task load
			*/
			public function getRequiredHandlePHIDsForRevisionList(
			DifferentialRevision $revision) {
			return array();
			}


			/**
			* Specify which @{class:PhabricatorObjectHandle}s need to be loaded for your
			* field to render correctly on the edit interface.
			*
			* This is a more specific version of @{method:getRequiredHandlePHIDs} which
			* can be overridden to improve field performance by loading only data you
			* need.
			*
			* @return list List of PHIDs to load handles for.
			* @task load
			*/
			public function getRequiredHandlePHIDsForRevisionEdit() {
			return $this->getRequiredHandlePHIDs();
			}

			/**
			* Specify which @{class:PhabricatorObjectHandle}s need to be loaded for your
			* field to render correctly on the commit message interface.
			*
			* This is a more specific version of @{method:getRequiredHandlePHIDs} which
			* can be overridden to improve field performance by loading only data you
			* need.
			*
			* @return list List of PHIDs to load handles for.
			* @task load
			*/
			public function getRequiredHandlePHIDsForCommitMessage() {
			return $this->getRequiredHandlePHIDs();
			}

			/**
			* Parse a list of users into a canonical PHID list.
			*
			* @param string Raw list of comma-separated user names.
			* @return list List of corresponding PHIDs.
			* @task load
			*/
			protected function parseCommitMessageUserList($value) {
			return $this->parseCommitMessageObjectList($value, $mailables = false);
			}

			protected function parseCommitMessageUserOrProjectList($value) {
			return $this->parseCommitMessageObjectList(
			$value,
			$mailables = false,
			$allow_partial = false);
			}

			/**
			* Parse a list of mailable objects into a canonical PHID list.
			*
			* @param string Raw list of comma-separated mailable names.
			* @return list List of corresponding PHIDs.
			* @task load
			*/
			protected function parseCommitMessageMailableList($value) {
			return $this->parseCommitMessageObjectList($value, $mailables = true);
			}


			/**
			* Parse and lookup a list of object names, converting them to PHIDs.
			*
			* @param string Raw list of comma-separated object names.
			* @param bool True to include mailing lists.
			* @param bool True to make a best effort. By default, an exception is
			* thrown if any item is invalid.
			* @return list List of corresponding PHIDs.
			* @task load
			*/
			public static function parseCommitMessageObjectList(
			$value,
			$include_mailables,
			$allow_partial = false) {

			$types = array(
			PhabricatorPeoplePHIDTypeUser::TYPECONST,
			PhabricatorProjectPHIDTypeProject::TYPECONST,
			);

			if ($include_mailables) {
			$types[] = PhabricatorMailingListPHIDTypeList::TYPECONST;
			}

			return id(new PhabricatorObjectListQuery())
			->setViewer(PhabricatorUser::getOmnipotentUser())
			->setAllowPartialResults($allow_partial)
			->setAllowedTypes($types)
			->setObjectList($value)
			->execute();
			}


			/* -( Contextual Data )---------------------------------------------------- */


			/**
			* @task context
			*/
			final public function setRevision(DifferentialRevision $revision) {
			$this->revision = $revision;
			$this->didSetRevision();
			return $this;
			}

			/**
			* @task context
			*/
			protected function didSetRevision() {
			return;
			}


			/**
			* @task context
			*/
			final public function setDiff(DifferentialDiff $diff) {
			$this->diff = $diff;
			return $this;
			}

			/**
			* @task context
			*/
			final public function setManualDiff(DifferentialDiff $diff) {
			$this->manualDiff = $diff;
			return $this;
			}

			/**
			* @task context
			*/
			final public function setHandles(array $handles) {
			assert_instances_of($handles, 'PhabricatorObjectHandle');
			$this->handles = $handles;
			return $this;
			}

			/**
			* @task context
			*/
			final public function setDiffProperties(array $diff_properties) {
			$this->diffProperties = $diff_properties;
			return $this;
			}

			/**
			* @task context
			*/
			final public function setUser(PhabricatorUser $user) {
			$this->user = $user;
			return $this;
			}

			/**
			* @task context
			*/
			final protected function getRevision() {
			if (empty($this->revision)) {
			throw new DifferentialFieldDataNotAvailableException($this);
			}
			return $this->revision;
			}


			/**
			* Determine if revision context is currently available.
			*
			* @task context
			*/
			final protected function hasRevision() {
			return (bool)$this->revision;
			}


			/**
			* @task context
			*/
			final protected function getDiff() {
			if (empty($this->diff)) {
			throw new DifferentialFieldDataNotAvailableException($this);
			}
			return $this->diff;
			}

			/**
			* @task context
			*/
			final protected function getManualDiff() {
			if (!$this->manualDiff) {
			return $this->getDiff();
			}
			return $this->manualDiff;
			}

			/**
			* @task context
			*/
			final protected function getUser() {
			if (empty($this->user)) {
			throw new DifferentialFieldDataNotAvailableException($this);
			}
			return $this->user;
			}

			/**
			* Get the handle for an object PHID. You must overload
			* @{method:getRequiredHandlePHIDs} (or a more specific version thereof)
			* and include the PHID you want in the list for it to be available here.
			*
			* @return PhabricatorObjectHandle Handle to the object.
			* @task context
			*/
			final protected function getHandle($phid) {
			if ($this->handles === null) {
			throw new DifferentialFieldDataNotAvailableException($this);
			}
			if (empty($this->handles[$phid])) {
			$class = get_class($this);
			throw new Exception(
			"A differential field (of class '{$class}') is attempting to retrieve ".
			"a handle ('{$phid}') which it did not request. Return all handle ".
			"PHIDs you need from getRequiredHandlePHIDs().");
			}
			return $this->handles[$phid];
			}

			final protected function getLoadedHandles() {
			if ($this->handles === null) {
			throw new DifferentialFieldDataNotAvailableException($this);
			}

			return $this->handles;
			}

			/**
			* Get the list of properties for a diff set by @{method:setManualDiff}.
			*
			* @return array Array of all Diff properties.
			* @task context
			*/
			final public function getDiffProperties() {
			if ($this->diffProperties === null) {
			// This will be set to some (possibly empty) array if we've loaded
			// properties, so null means diff properties aren't available in this
			// context.
			throw new DifferentialFieldDataNotAvailableException($this);
			}
			return $this->diffProperties;
			}

			/**
			* Get a property of a diff set by @{method:setManualDiff}.
			*
			* @param string Diff property key.
			* @return mixed\|null Diff property, or null if the property does not have
			* a value.
			* @task context
			*/
			final public function getDiffProperty($key) {
			return idx($this->getDiffProperties(), $key);
			}

			}

phab/src/applications/differential/field/specification/DifferentialFieldSpecification.phpa19f49632fd8feature/testing

DifferentialFieldSpecification.phpView Options

phab/src/applications/differential/field/specification/DifferentialFieldSpecification.php
a19f49632fd8feature/testing

DifferentialFieldSpecification.php
View Options