public ModelValidationInfo validate()

in plugin/src/com/microsoft/alm/plugin/idea/common/ui/checkout/CheckoutPageModelImpl.java [206:261]
44 lines of code
14 McCabe index (conditional complexity)

    public ModelValidationInfo validate() {
        ModelValidationInfo result = super.validate();

        if (result == ModelValidationInfo.NO_ERRORS) {
            final String parentDirectory = getParentDirectory();
            if (parentDirectory == null || parentDirectory.isEmpty()) {
                return ModelValidationInfo.createWithResource(PROP_PARENT_DIR,
                        TfPluginBundle.KEY_CHECKOUT_DIALOG_ERRORS_PARENT_DIR_EMPTY);
            }

            final File parentDirectoryOnDisk = new File(parentDirectory);
            if (!parentDirectoryOnDisk.exists()) {
                return ModelValidationInfo.createWithResource(PROP_PARENT_DIR,
                        TfPluginBundle.KEY_CHECKOUT_DIALOG_ERRORS_PARENT_DIR_NOT_FOUND);
            }

            // We test this method and so we need to check to see if we are in IntelliJ before using VirtualFileManager
            // ApplicationManager is null if we are not in IntelliJ
            if (ApplicationManager.getApplication() != null) {
                final VirtualFile destinationParent = LocalFileSystem.getInstance().findFileByPath(parentDirectory);
                if (destinationParent == null) {
                    return ModelValidationInfo.createWithResource(PROP_PARENT_DIR,
                            TfPluginBundle.KEY_CHECKOUT_DIALOG_ERRORS_PARENT_DIR_NOT_FOUND);
                }
            }

            if (getSelectedContext() == null) {
                return ModelValidationInfo.createWithResource(PROP_REPO_TABLE,
                        TfPluginBundle.KEY_CHECKOUT_DIALOG_ERRORS_REPO_NOT_SELECTED);
            }

            final String directoryName = getDirectoryName();
            if (directoryName == null || directoryName.isEmpty()) {
                return ModelValidationInfo.createWithResource(PROP_DIRECTORY_NAME,
                        TfPluginBundle.KEY_CHECKOUT_DIALOG_ERRORS_DIR_NAME_EMPTY);
            }

            final File destDirectoryOnDisk = new File(parentDirectory, directoryName);
            //verify the destination directory does not exist
            if (destDirectoryOnDisk.exists() && destDirectoryOnDisk.isDirectory()) {
                return ModelValidationInfo.createWithResource(PROP_DIRECTORY_NAME,
                        TfPluginBundle.KEY_CHECKOUT_DIALOG_ERRORS_DESTINATION_EXISTS, directoryName);
            }
            //verify destination directory parent exists, we can reach this condition if user specifies a path for directory name
            if (destDirectoryOnDisk.getParentFile() == null || !destDirectoryOnDisk.getParentFile().exists()) {
                return ModelValidationInfo.createWithResource(PROP_DIRECTORY_NAME,
                        TfPluginBundle.KEY_CHECKOUT_DIALOG_ERRORS_DIR_NAME_INVALID,
                        directoryName, destDirectoryOnDisk.getParent());
            }

        } else {
            return result;
        }

        return ModelValidationInfo.NO_ERRORS;
    }