Package ghidra.util.task

Class TaskBuilder

  • public class TaskBuilder
extends java.lang.Object
    A builder object that allows clients to launch tasks in the background, with a progress dialog representing the task.

    Using this class obviates the need for clients to create full class objects to implement the Task interface, which means less boiler-plate code.

    An example of usage: 

                    MonitoredRunnable r = 
                        monitor -> doWork(parameter, monitor);
                new TaskBuilder("Task Title", r)
                        .setHasProgress(true)
                        .setCanCancel(true)
                        .setStatusTextAlignment(SwingConstants.LEADING)
                        .launchModal();
    Or, 
                TaskBuilder.withRunnable(monitor -> doWork(parameter, monitor))
                        .setTitle("Task Title")
                        .setHasProgress(true)
                        .setCanCancel(true)
                        .setStatusTextAlignment(SwingConstants.LEADING)
                        .launchModal();
    Or, 
                TaskBuilder.withTask(new AwesomeTask(awesomeStuff)).launchModal();
    Or, 
                TaskLauncher.launch(new AwesomeTask(awesomeStuff));

    Note: this class will check to see if it is in a headless environment before launching its task. This makes it safe to use this class in headed or headless environments.

    • Constructor Detail

      • TaskBuilder

        public TaskBuilder​(java.lang.String title,
                   MonitoredRunnable runnable)
        Constructor
        Parameters:
        title - the required title for your task. This will appear as the title of the task dialog
        runnable - the runnable that will be called when the task is run

    • Method Detail

      • withRunnable

        public static TaskBuilder withRunnable​(MonitoredRunnable r)
        A convenience method to start a builder using the given runnable. After calling this method you are still required to call setTitle(String).

        This method allows for a more attractive fluent API usage than does the constructor (see the javadoc header).

        Parameters:
        r - the runnable
        Returns:
        this builder

      • withTask

        public static TaskBuilder withTask​(Task t)
        A convenience method to start a builder using the given task. The title of the task will be the value of Task.getTaskTitle().

        This method allows for a more attractive fluent API usage than does the constructor (see the javadoc header).

        Parameters:
        t - the task
        Returns:
        this builder

      • setTitle

        public TaskBuilder setTitle​(java.lang.String title)
        Sets the title of this task. The title must be set before calling any of the launch methods.
        Parameters:
        title - the title
        Returns:
        this builder

      • setHasProgress

        public TaskBuilder setHasProgress​(boolean hasProgress)
        Sets whether this task reports progress. The default is true.
        Parameters:
        hasProgress - true if the task reports progress
        Returns:
        this builder

      • setCanCancel

        public TaskBuilder setCanCancel​(boolean canCancel)
        Sets whether the task can be cancelled. The default is true.
        Parameters:
        canCancel - true if the task can be cancelled.
        Returns:
        this builder

      • setParent

        public TaskBuilder setParent​(java.awt.Component parent)
        Sets the component over which the task dialog will be shown. The default is null, which shows the dialog over the active window.
        Parameters:
        parent - the parent
        Returns:
        this builder

      • setDialogWidth

        public TaskBuilder setDialogWidth​(int width)
        The desired width of the dialog. The default is TaskDialog.DEFAULT_WIDTH.
        Parameters:
        width - the width
        Returns:
        this builder

      • setStatusTextAlignment

        public TaskBuilder setStatusTextAlignment​(int alignment)
        Sets the horizontal text alignment of messages shown in the task dialog. The default is SwingConstants.CENTER. Valid values are SwingConstants LEADING, CENTER and TRAILING.
        Parameters:
        alignment - the alignment
        Returns:
        this builder

      • launchModal

        public void launchModal()
        Launches the task built by this builder, using a blocking modal dialog. The task will be run in the current thread if in a headless environment.

      • launchNonModal

        public void launchNonModal()
        Launches the task built by this builder, using a non-blocking dialog. The task will be run in the current thread if in a headless environment.

      • launchInBackground

        public void launchInBackground​(TaskMonitor monitor)
        Runs the task in a background thread with the given monitor that cannot be null. This is a special case for clients that already have a task monitor widget in their UI and they wish to let it show the progress of the given task while not blocking the Swing thread.
        Parameters:
        monitor - the task monitor; may not be null