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PhilippSalvisbergPhilippSalvisberg
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add WrapLayout to be used for counters
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‎sqldev/src/main/java/org/utplsql/sqldev/ui/runner/WrapLayout.xtend

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/*
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* Copyright 2019 Philipp Salvisberg <philipp.salvisberg@trivadis.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.utplsql.sqldev.ui.runner
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import java.awt.Component
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import java.awt.Container
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import java.awt.Dimension
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import java.awt.FlowLayout
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import java.awt.Insets
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import javax.swing.JScrollPane
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import javax.swing.SwingUtilities
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/**
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* FlowLayout subclass that fully supports wrapping of components.
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* Converted to Xtend based on http://www.camick.com/java/source/WrapLayout.java
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*/
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class WrapLayout extends FlowLayout {
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/**
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* Constructs a new <code>WrapLayout</code> with a left
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* alignment and a default 5-unit horizontal and vertical gap.
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*/
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new() {
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super()
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}
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/**
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* Constructs a new <code>FlowLayout</code> with the specified
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* alignment and a default 5-unit horizontal and vertical gap.
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* The value of the alignment argument must be one of
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* <code>WrapLayout</code>, <code>WrapLayout</code>,
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* or <code>WrapLayout</code>.
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* @param align the alignment value
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*/
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new(int align) {
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super(align)
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}
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/**
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* Creates a new flow layout manager with the indicated alignment
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* and the indicated horizontal and vertical gaps.
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* <p>
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* The value of the alignment argument must be one of
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* <code>WrapLayout</code>, <code>WrapLayout</code>,
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* or <code>WrapLayout</code>.
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* @param align the alignment value
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* @param hgap the horizontal gap between components
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* @param vgap the vertical gap between components
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*/
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new(int align, int hgap, int vgap) {
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super(align, hgap, vgap)
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}
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/**
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* Returns the preferred dimensions for this layout given the
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* <i>visible</i> components in the specified target container.
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* @param target the component which needs to be laid out
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* @return the preferred dimensions to lay out the
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* subcomponents of the specified container
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*/
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override Dimension preferredLayoutSize(Container target) {
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return layoutSize(target, true)
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}
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/**
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* Returns the minimum dimensions needed to layout the <i>visible</i>
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* components contained in the specified target container.
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* @param target the component which needs to be laid out
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* @return the minimum dimensions to lay out the
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* subcomponents of the specified container
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*/
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override Dimension minimumLayoutSize(Container target) {
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var Dimension minimum = layoutSize(target, false)
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minimum.width -= (getHgap() + 1)
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return minimum
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}
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/**
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* Returns the minimum or preferred dimension needed to layout the target
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* container.
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* @param target target to get layout size for
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* @param preferred should preferred size be calculated
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* @return the dimension to layout the target container
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*/
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def private Dimension layoutSize(Container target, boolean preferred) {
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synchronized (target.getTreeLock()) {
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// Each row must fit with the width allocated to the containter.
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// When the container width = 0, the preferred width of the container
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// has not yet been calculated so lets ask for the maximum.
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var int targetWidth = target.getSize().width
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var Container container = target
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while (container.getSize().width === 0 && container.getParent() !== null) {
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container = container.getParent()
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}
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targetWidth = container.getSize().width
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if(targetWidth === 0) targetWidth = Integer.MAX_VALUE
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var int hgap = getHgap()
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var int vgap = getVgap()
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var Insets insets = target.getInsets()
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var int horizontalInsetsAndGap = insets.left + insets.right + (hgap * 2)
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var int maxWidth = targetWidth - horizontalInsetsAndGap
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// Fit components into the allowed width
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var Dimension dim = new Dimension(0, 0)
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var int rowWidth = 0
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var int rowHeight = 0
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var int nmembers = target.getComponentCount()
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for (var int i = 0; i < nmembers; i++) {
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var Component m = target.getComponent(i)
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if (m.isVisible()) {
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var Dimension d = if(preferred) m.getPreferredSize() else m.getMinimumSize()
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// Can't add the component to current row. Start a new row.
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if (rowWidth + d.width > maxWidth) {
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addRow(dim, rowWidth, rowHeight)
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rowWidth = 0
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rowHeight = 0
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}
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// Add a horizontal gap for all components after the first
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if (rowWidth !== 0) {
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rowWidth += hgap
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}
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rowWidth += d.width
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rowHeight = Math.max(rowHeight, d.height)
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}
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}
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addRow(dim, rowWidth, rowHeight)
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dim.width += horizontalInsetsAndGap
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dim.height += insets.top + insets.bottom + vgap * 2
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// When using a scroll pane or the DecoratedLookAndFeel we need to
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// make sure the preferred size is less than the size of the
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// target containter so shrinking the container size works
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// correctly. Removing the horizontal gap is an easy way to do this.
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var Container scrollPane = SwingUtilities.getAncestorOfClass(JScrollPane, target)
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if (scrollPane !== null && target.isValid()) {
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dim.width -= (hgap + 1)
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}
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return dim
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}
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}
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/*
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* A new row has been completed. Use the dimensions of this row
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* to update the preferred size for the container.
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*
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* @param dim update the width and height when appropriate
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* @param rowWidth the width of the row to add
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* @param rowHeight the height of the row to add
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*/
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def private void addRow(Dimension dim, int rowWidth, int rowHeight) {
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dim.width = Math.max(dim.width, rowWidth)
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if (dim.height > 0) {
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dim.height += getVgap()
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}
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dim.height += rowHeight
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}
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}

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