Aligned Labels

Overview

Aligned Label is a Container used to align all controls to the maximum width of a set of labels.

In Totalcross this component is called AlignedLabelContainer.

Source Code

AlignedLabelsSample.java

import totalcross.ui.AlignedLabelsContainer;
import totalcross.ui.Button;
import totalcross.ui.ComboBox;
import totalcross.ui.Edit;
import totalcross.ui.Label;
import totalcross.ui.ListBox;
import totalcross.ui.ScrollContainer;
import totalcross.util.UnitsConverter;

public class extends ScrollContainer {
	private int gap = UnitsConverter.toPixels(10 + DP);
	private boolean canInsert = true;
	private ListBox lb;
	private Label output;

	@Override
	public void initUI() {
		uiAdjustmentsBasedOnFontHeightIsSupported = false;
		setBackForeColors(0xF7F7F7, 0x000000);
		setScrollBars(false, true);

		String[] labels = { "Name", "Born date", "Telephone", "Address", "City", "Country" };
		Edit edits[] = new Edit[5];
		edits[0].transparentBackground = true;
		Edit.useNativeNumericPad = true;

		for (int i = 0; i < edits.length; i++) {
			switch (i) {
			case 1:
				edits[i] = new Edit("99/99/9999");
				edits[i].setMode(Edit.NORMAL, true);
				edits[i].setValidChars(Edit.numbersSet);
				edits[i].setKeyboard(Edit.KBD_NUMERIC);
				break;
			case 2:
				edits[i] = new Edit("(99)9999-99999");
				edits[i].setMode(Edit.NORMAL, true);
				edits[i].setValidChars(Edit.numbersSet);
				edits[i].setKeyboard(Edit.KBD_NUMERIC);
				break;
			default:
				edits[i] = new Edit();
			}
		}

		Label title = new Label("This is an AlignedLabelsContainer.\nAll the content will be automatically aligned.",
				CENTER, 0, true);
		title.autoSplit = true;
		add(title, LEFT + gap, TOP + gap, FILL - gap, PREFERRED);

		AlignedLabelsContainer alc = new AlignedLabelsContainer();
		alc.uiAdjustmentsBasedOnFontHeightIsSupported = false;
		alc.labelAlign = RIGHT;

		alc.setInsets(gap, gap, 0, 0);
		alc.setLabels(labels, edits[0].getPreferredHeight());
		add(alc, LEFT, AFTER, FILL, PREFERRED);
		int i;
		for (i = 0; i < edits.length - 1; i++) {
			alc.add(edits[i], LEFT + gap, alc.getLineY(i), FILL - gap, PREFERRED);
		}

		Button btnInsert = new Button("Insert data", (byte) 0);
		btnInsert.setBackForeColors(0x4583d4, 0xFFFFFF);
		alc.add(edits[edits.length - 1], LEFT + gap, alc.getLineY(i), edits[3].getWidth() / 2 - gap / 2, PREFERRED);
		alc.add(btnInsert, RIGHT - gap, CENTER_OF, SAME, PREFERRED, edits[edits.length - 1]);

		ComboBox cbCountry = new ComboBox(new String[] { "Brazil", "USA" });
		alc.add(cbCountry, LEFT + gap, alc.getLineY(++i), SAME, PREFERRED, edits[edits.length - 1]);

		Button btnClear = new Button("CLEAR DATA", (byte) 0);
		alc.add(btnClear, RIGHT - gap, CENTER_OF, SAME, PREFERRED);

		btnInsert.addPressListener(e -> {
			if (canInsert) {
				lb = new ListBox();
				for (int j = 0; j < edits.length; j++)
					lb.add(labels[j] + ": " + edits[j].getText());
				if (cbCountry.getSelectedIndex() != -1)
					lb.add("Country: " + cbCountry.getSelectedItem());
				else
					lb.add("Country: ");

				output = new Label("OUTPUT:");
				output.setFont(font.asBold());
				add(output, CENTER, AFTER);
				add(lb, CENTER, AFTER + gap, SCREENSIZE + 80, PREFERRED);
				canInsert = false;

				scrollToControl(lb);
			} else {
				lb.removeAll();
				for (int j = 0; j < edits.length; j++)
					lb.add(labels[j] + ": " + edits[j].getText());
				if (cbCountry.getSelectedIndex() != -1)
					lb.add("Country: " + cbCountry.getSelectedItem());
				else
					lb.add("Country: ");
			}
			// reposition(); reposition bugando o edit
		});

		btnClear.addPressListener(e -> {

			// Cleaning the labels' content
			for (Edit edit : edits)
				edit.clear();
			cbCountry.setSelectedIndex(-1);
			if (!canInsert) {
				// Cleaning the output
				remove(lb);
				remove(output);
				canInsert = true;
			}
		});
	}
}

Attributes

Type	Name	Description
Font	childrenFont	Set this member to the font you want to set to the controls that are added to this container
int[ ]	foreColors	Sets an array with the same number of labels and the colors you want to show for each label
int	labelAlign	The alignment of the labels

Methods

ype	Name	Description
Construtor	AlignedLabelsContainer( )	Creates a new AlignedLabelsContainer without labels
Construtor	AlignedLabelsContainer(String[] labels)	Creates a new AlignedLabelsContainer with the given labels
Construtor	AlignedLabelsContainer(String[] labels, int vgap)	Creates a new AlignedLabelsContainer with the given labels and a vertical gap between the labels
void	add(Control c)	Since this is an AlignedLabelsContainer, use this to add a label
int	getLineY(int line)	Given a line (staring from 0), returns the y position
void	setLabels(String[ ] labels, int vgap)	Sets the labels and the extra gap between rows (which may be 0)