diff options
| -rw-r--r-- | src/main/java/io/github/cottonmc/cotton/gui/widget/WAnchorLayout.java | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/widget/WAnchorLayout.java b/src/main/java/io/github/cottonmc/cotton/gui/widget/WAnchorLayout.java new file mode 100644 index 0000000..bd72836 --- /dev/null +++ b/src/main/java/io/github/cottonmc/cotton/gui/widget/WAnchorLayout.java @@ -0,0 +1,108 @@ +package io.github.cottonmc.cotton.gui.widget; + +import java.util.concurrent.ConcurrentHashMap; + +public class WAnchorLayout { + public class AnchorException extends Exception { + private static final long serialVersionUID = -4344321727684528775L; + + public AnchorException(AnchorSide side1, String what1, AnchorSide side2, String what2, String why) { + super("Unable to link " + side1.toString() + " of " + what1 + " to " + side2.toString() + " of " + what2 + ": " + why); + } + } + + public enum AnchorSide { + TOP, + RIGHT, + BOTTOM, + LEFT, + } + + public class Anchor { + protected final String anchorName; + protected final AnchorSide anchorSide; + protected String anchorTarget = null; + protected AnchorSide anchorTargetSide = null; + protected AnchoredWidget linkedAnchorTarget = null; + + public Anchor(String _anchorName, AnchorSide _anchorSide) { + anchorName = _anchorName; + anchorSide = _anchorSide; + } + + public void bind(String _anchorTarget, AnchorSide _anchorTargetSide) { + anchorTarget = _anchorTarget; + anchorTargetSide = _anchorTargetSide; + } + + public void link(WAnchorLayout layout) throws AnchorException { + if (anchorTarget == null) { + return; + } + AnchoredWidget w = layout.getWidgetByName(anchorTarget); + if (w == null) { + throw new AnchorException(anchorSide, anchorName, anchorTargetSide, anchorTarget, "No such anchor: " + anchorTarget); + } + linkedAnchorTarget = w; + } + } + + public class AnchoredWidget { + protected WWidget widget; + protected final String name; + protected Anchor top, right, bottom, left; + + public AnchoredWidget(String _name, WWidget _widget) { + widget = _widget; + name = _name; + top = new Anchor(name, AnchorSide.TOP); + right = new Anchor(name, AnchorSide.RIGHT); + bottom = new Anchor(name, AnchorSide.BOTTOM); + left = new Anchor(name, AnchorSide.LEFT); + } + + public void link(WAnchorLayout layout) throws AnchorException { + if (top != null) top.link(layout); + if (right != null) right.link(layout); + if (bottom != null) bottom.link(layout); + if (left != null) left.link(layout); + } + + public AnchoredWidget bind(AnchorSide side, AnchorSide toSide, String ofWhat) { + Anchor a = null; + if (side == null) { + return this; + } else if (side == AnchorSide.TOP) { + a = top; + } else if (side == AnchorSide.RIGHT) { + a = right; + } else if (side == AnchorSide.BOTTOM) { + a = bottom; + } else if (side == AnchorSide.LEFT) { + a = left; + } + // a.anchorSide + return this; + } + } + + protected ConcurrentHashMap<String, AnchoredWidget> children; + + void add(String name, AnchoredWidget widget) { + children.put(name, widget); + } + + AnchoredWidget getWidgetByName(String name) { + return children.get(name); + } + + void link() { + children.forEach((k, w) -> { + try { + w.link(this); + } catch (AnchorException e) { + e.printStackTrace(); + } + }); + } +}
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