/**
* Returns whether a given library project is needed by the receiver.
*
* <p>If the library is needed, this finds the matching {@link LibraryState}, initializes it so
* that it contains the library's {@link IProject} object (so that {@link
* LibraryState#getProjectState()} does not return null) and then returns it.
*
* @param libraryProject the library project to check.
* @return a non null object if the project is a library dependency, <code>null</code> otherwise.
* @see LibraryState#getProjectState()
*/
public LibraryState needs(ProjectState libraryProject) {
// compute current location
File projectFile = mProject.getLocation().toFile();
// get the location of the library.
File libraryFile = libraryProject.getProject().getLocation().toFile();
// loop on all libraries and check if the path match
synchronized (mLibraries) {
for (LibraryState state : mLibraries) {
if (state.getProjectState() == null) {
File library = new File(projectFile, state.getRelativePath());
try {
File absPath = library.getCanonicalFile();
if (absPath.equals(libraryFile)) {
state.setProject(libraryProject);
return state;
}
} catch (IOException e) {
// ignore this library
}
}
}
}
return null;
}
private void setProject(ProjectState project) {
mProjectState = project;
mPath = project.getProject().getLocation().toOSString();
mProjectState.addParentProject(getMainProjectState());
getMainProjectState().updateFullLibraryList();
}
@Override
public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException {
if (pm.isCanceled()) {
return null;
}
if (!getArguments().getUpdateReferences()) {
return null;
}
CompositeChange result = new CompositeChange(getName());
result.markAsSynthetic();
addManifestFileChanges(result);
// Update layout files; we don't just need to react to custom view
// changes, we need to update fragment references and even tool:context activity
// references
addLayoutFileChanges(mProject, result);
// Also update in dependent projects
ProjectState projectState = Sdk.getProjectState(mProject);
if (projectState != null) {
Collection<ProjectState> parentProjects = projectState.getFullParentProjects();
for (ProjectState parentProject : parentProjects) {
IProject project = parentProject.getProject();
addLayoutFileChanges(project, result);
}
}
return (result.getChildren().length == 0) ? null : result;
}
/**
* Returns the {@link LibraryState} object for a given <var>name</var>. This can only return a
* non-null object if the link between the main project's {@link IProject} and the library's
* {@link IProject} was done.
*
* @return the matching LibraryState or <code>null</code>
* @see #needs(IProject)
*/
public LibraryState getLibrary(String name) {
synchronized (mLibraries) {
for (LibraryState state : mLibraries) {
ProjectState ps = state.getProjectState();
if (ps != null && ps.getProject().getName().equals(name)) {
return state;
}
}
}
return null;
}
/**
* Returns the {@link LibraryState} object for a given {@link IProject}. This can only return a
* non-null object if the link between the main project's {@link IProject} and the library's
* {@link IProject} was done.
*
* @return the matching LibraryState or <code>null</code>
* @see #needs(ProjectState)
*/
public LibraryState getLibrary(IProject library) {
synchronized (mLibraries) {
for (LibraryState state : mLibraries) {
ProjectState ps = state.getProjectState();
if (ps != null && ps.getProject().equals(library)) {
return state;
}
}
}
return null;
}
/**
* Resolves a given list of libraries, finds out if they depend on other libraries, and returns a
* full list of all the direct and indirect dependencies in the proper order (first is higher
* priority when calling aapt).
*
* @param inLibraries the libraries to resolve
* @param outLibraries where to store all the libraries.
*/
private void buildFullLibraryDependencies(
List<LibraryState> inLibraries, ArrayList<IProject> outLibraries) {
// loop in the inverse order to resolve dependencies on the libraries, so that if a library
// is required by two higher level libraries it can be inserted in the correct place
for (int i = inLibraries.size() - 1; i >= 0; i--) {
LibraryState library = inLibraries.get(i);
// get its libraries if possible
ProjectState libProjectState = library.getProjectState();
if (libProjectState != null) {
List<LibraryState> dependencies = libProjectState.getLibraries();
// build the dependencies for those libraries
buildFullLibraryDependencies(dependencies, outLibraries);
// and add the current library (if needed) in front (higher priority)
if (outLibraries.contains(libProjectState.getProject()) == false) {
outLibraries.add(0, libProjectState.getProject());
}
}
}
}
/**
* Returns whether the project depends on a given <var>library</var>
*
* @param library the library to check.
* @return true if the project depends on the library. This is not affected by whether the link
* was done through {@link #needs(ProjectState)}.
*/
public boolean dependsOn(ProjectState library) {
synchronized (mLibraries) {
for (LibraryState state : mLibraries) {
if (state != null
&& state.getProjectState() != null
&& library.getProject().equals(state.getProjectState().getProject())) {
return true;
}
}
}
return false;
}
