Bug 34159 [Tasks] First three columns of Task List too wide w/native table
The type, completion, and priority columns of the Task list using the native table widget on MacOS X are much wider than are necessary for displaying the icons in those columns and appear not to be resizable.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/tasklist/TaskList.java
boolean showOwnerProject() {
		return getFilter().onResource
			== TasksFilter.ON_ANY_RESOURCE_OF_SAME_PROJECT;
	}
	/**
	 * Processes state change of the 'showSelections' switch.
	 * If true, it will resync with the saved input element.
	 * Otherwise, it will reconfigure to show all the
	 * problems/tasks in the workbench.
	 */
	void toggleInputSelection(boolean value) {
		/*
		if (value) {
			handleInput(inputSelection, false);
		} else {
			// detach from input and link to the workbench object
			handleInput(WorkbenchPlugin.getPluginWorkbench(), true);
		}
		updateTitle();
		*/
	}
	/**
	 * If true, current input will be
	 * remembered and further selections will be
	 * ignored.
	 */
	void toggleLockInput(boolean value) {
		/*
		if (!value) {
			handleInput(inputSelection, false);