public void addLayoutComponent(Component comp, Object constraints) { GridConstraints c = (GridConstraints) constraints; int row = c.getRow(); int rowSpan = c.getRowSpan(); int rowCount = this.getRowCount(); if (row >= 0 && row < rowCount) { if (row + rowSpan - 1 >= rowCount) { throw new IllegalArgumentException( "wrong row span: " + rowSpan + "; row=" + row + " rowCount=" + rowCount); } else { int column = c.getColumn(); int colSpan = c.getColSpan(); int columnCount = this.getColumnCount(); if (column >= 0 && column < columnCount) { if (column + colSpan - 1 >= columnCount) { throw new IllegalArgumentException( "wrong col span: " + colSpan + "; column=" + column + " columnCount=" + columnCount); } else { super.addLayoutComponent(comp, constraints); } } else { throw new IllegalArgumentException("wrong column: " + column); } } } else { throw new IllegalArgumentException("wrong row: " + row); } }
private int checkSetSizesFromParent(Container container, Insets insets) { int skipLayout = 0; GridLayoutManager parentGridLayout = null; GridConstraints parentGridConstraints = null; Container parent = container.getParent(); if (parent != null) { if (parent.getLayout() instanceof GridLayoutManager) { parentGridLayout = (GridLayoutManager) parent.getLayout(); parentGridConstraints = parentGridLayout.getConstraintsForComponent(container); } else { Container col = parent.getParent(); if (col != null && col.getLayout() instanceof GridLayoutManager) { parentGridLayout = (GridLayoutManager) col.getLayout(); parentGridConstraints = parentGridLayout.getConstraintsForComponent(parent); } } } if (parentGridLayout != null && parentGridConstraints.isUseParentLayout()) { int i; if (this.myRowStretches.length == parentGridConstraints.getRowSpan()) { int row = parentGridConstraints.getRow(); this.myYs[0] = insets.top + this.myMargin.top; this.myHeights[0] = parentGridLayout.myHeights[row] - this.myYs[0]; for (i = 1; i < this.myRowStretches.length; ++i) { this.myYs[i] = parentGridLayout.myYs[i + row] - parentGridLayout.myYs[row]; this.myHeights[i] = parentGridLayout.myHeights[i + row]; } this.myHeights[this.myRowStretches.length - 1] -= insets.bottom + this.myMargin.bottom; skipLayout |= 1; } if (this.myColumnStretches.length == parentGridConstraints.getColSpan()) { int column = parentGridConstraints.getColumn(); this.myXs[0] = insets.left + this.myMargin.left; this.myWidths[0] = parentGridLayout.myWidths[column] - this.myXs[0]; for (i = 1; i < this.myColumnStretches.length; ++i) { this.myXs[i] = parentGridLayout.myXs[i + column] - parentGridLayout.myXs[column]; this.myWidths[i] = parentGridLayout.myWidths[i + column]; } this.myWidths[this.myColumnStretches.length - 1] -= insets.right + this.myMargin.right; skipLayout |= 2; } } return skipLayout; }