source: trunk/src/org/expeditee/gui/FrameCreator.java@ 21

package org.expeditee.gui;

import java.awt.Color;
import java.util.List;

import org.expeditee.items.Item;
import org.expeditee.items.Text;

public class FrameCreator {

        private String _name;

        private final static int START_Y = 40;

        private final static int START_X = 20;

        private Frame _current = null;

        private int _lastX = START_X;

        private int _maxX = 0;

        private int _lastY = START_Y;

        private Text _Mnext = new Text(-1, "@Next");

        private Text _Mprev = new Text(-1, "@Previous");

        private Item _next;

        private Item _prev;

        public FrameCreator(String name, boolean recreate) {
                Frame toUse = null;
                try {
                        toUse = FrameIO
                                        .CreateFrameset(name, FrameIO.PROFILE_PATH, recreate);
                } catch (Exception e) {
                        if (toUse == null)
                                toUse = FrameIO.CreateFrame(name, name, null);
                }
                _name = name;
                resetGlobals(toUse);

                // set positions of next\prev frame links
                _Mnext.setPosition(FrameGraphics.getMaxSize().width - 100,
                                FrameGraphics.getMaxSize().height - 15);
                _Mprev.setPosition(50, FrameGraphics.getMaxSize().height - 15);
        }

        /**
         * Creates the next frame in the frameset, with a previous button already
         * added and linked to the last frame. _current then gets updated to point
         * at the newly created Frame, and _lastY is reset
         */
        public boolean createNextFrame() {
                try {
                        Frame newFrame = FrameIO.CreateFrame(_current.getFramesetName(),
                                        _name, null);

                        // add link to previous frame
                        _prev = _Mprev.copy();
                        _prev.setID(newFrame.getNextItemID());
                        _prev.setLink(_current.getFrameName());
                        newFrame.addItem(_prev);

                        // add link to new frame
                        _next = _Mnext.copy();
                        _next.setID(_current.getNextItemID());
                        _next.setLink(newFrame.getFrameName());
                        _current.addItem(_next);
                        FrameIO.SaveFrame(_current, false);

                        resetGlobals(newFrame);
                        _maxX = 0;
                        return true;
                } catch (Exception e) {
                        return false;
                }
        }

        private void resetGlobals(Frame toUse) {
                _lastY = START_Y + toUse.getTitle().getPosition().y;
                _lastX = START_X;
                //Check for @Start
                for (Item it : toUse.getItems()) {
                        if (it instanceof Text) {
                                Text t = (Text) it;
                                if (t.getTextNoList().toLowerCase().equals("@start") ||
                                                t.getTextNoList().toLowerCase().startsWith("@start:")) {
                                        t.stripFirstWord();

                                        if (t.getTextNoList().equals("")){
                                                _lastY = t.getY();
                                                _lastX = t.getX();
                                                t.delete();
                                                break;
                                        }
                                }
                        }
                }
                _current = toUse;       
        }

        public boolean addItem(Item toAdd) {
                try {
                        // if we have reached the end of the Y axis, try moving over on the
                        // X
                        // axis
                        if (_lastY >= _Mprev.getY() - _Mprev.getBoundsHeight()) {
                                _lastX = _maxX + 10;
                                _lastY = START_Y;
                        }

                        // if there is no more room on the X axis, we have to start a new
                        // frame
                        if (toAdd.getBoundsWidth() + _lastX > FrameGraphics.getMaxSize().width) {
                                createNextFrame();
                        }

                        toAdd.setPosition(_lastX, _lastY);
                        toAdd.setOffset(0, 0);
                        toAdd.setID(_current.getNextItemID());

                        _current.addItem(toAdd);
                        // _current.addAllItems(items);

                        FrameIO.SaveFrame(_current, false);

                        _lastY = toAdd.getY() + toAdd.getBoundsHeight();
                        _maxX = Math.max(toAdd.getX() + toAdd.getBoundsWidth(), _maxX);
                        return true;
                } catch (Exception e) {
                        return false;
                }
        }

        public void addText(String toAdd) {
                addText(toAdd, null);
        }

        public void addText(String toAdd, Color c) {
                Text text = _current.createNewText();
                text.setText(toAdd);
                text.setColor(c);

                addItem(text);
        }

        /**
         * Returns the Frame name of the current (latest) frame in the message
         * frameset.
         * 
         * @return The Frame currently being used in the message frameset
         */
        public String getCurrent() {
                if (_current == null)
                        return null;

                return _current.getFrameName();
        }
}