Rewrite of the list command.
This commit is contained in:
Tobias Ottenweller
parent
1ef178f6a0
commit
cede47deab
@ -15,6 +15,15 @@ import de.craftinc.gates.util.TextUtil;
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public class CommandList extends BaseCommand
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{
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protected static final int linesPerPage = 10;
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protected static final int charactersPerLine = 52; /* this is actually no true. the
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font used by minecraft is not
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monospace. but I don't think
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there is a (easy) way for a
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bukkit plugin to calculate
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the drawing-size of a string.
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*/
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public CommandList()
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{
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aliases.add("list");
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@ -32,46 +41,126 @@ public class CommandList extends BaseCommand
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}
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protected static String intToTitleString(int i)
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protected static List<String> linesOfGateIds(List<String> gates)
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{
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List<String> lines = new ArrayList<String>();
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int index = 0;
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List<String> gateIdsForCurrentLine = new ArrayList<String>();
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int numCharactersInCurrentLine = 0;
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while (index < gates.size()) {
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String gateId = gates.get(index);
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int gateIdLength = gateId.length() + 2; // actual length + comma + whitespace
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// special case: very long gate id
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if (gateIdLength > charactersPerLine && numCharactersInCurrentLine == 0) {
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gateIdsForCurrentLine = new ArrayList<String>();
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numCharactersInCurrentLine = 0;
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while ((gateId.length() + 2) > charactersPerLine) {
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int cutPos = charactersPerLine;
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// is the id too long to add comma and whitespace but not longer than the line?
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if (gateId.length() <= charactersPerLine) {
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cutPos -= 2;
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}
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lines.add(gateId.substring(0, cutPos));
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gateId = gateId.substring(cutPos, gateId.length());
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}
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// if (index == (gates.size() - 1)) {
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gateIdsForCurrentLine.add(gateId);
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// }
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// else {
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// gateIdsForCurrentLine.add(gateId + ", ");
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// }
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numCharactersInCurrentLine += gateId.length();
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index++;
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}
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// gate fits into current line
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else if ((numCharactersInCurrentLine + gateIdLength) <= charactersPerLine) {
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gateIdsForCurrentLine.add(gateId);
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numCharactersInCurrentLine += gateIdLength;
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index++;
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}
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// the current gate does not fit on the
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else {
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lines.add(TextUtil.implode(gateIdsForCurrentLine, ", ") + ", ");
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gateIdsForCurrentLine = new ArrayList<String>();
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numCharactersInCurrentLine = 0;
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}
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}
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lines.add(TextUtil.implode(gateIdsForCurrentLine, ", "));
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return lines;
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}
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protected static String intToTitleString(int i, boolean addPreviousPageNote, boolean addNextPageNote)
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{
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String retVal = ChatColor.DARK_AQUA + "";
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if ( i < 26 ) {
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return ChatColor.DARK_AQUA + "" + (char)(i+65) + ":";
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retVal += (char)(i+65);
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}
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else if ( i == 26 ) {
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return ChatColor.DARK_AQUA + "0 - 9:";
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retVal += "0-9";
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}
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else {
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return ChatColor.DARK_AQUA + "!@#$:";
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retVal += "!@#$";
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}
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if (addPreviousPageNote && addNextPageNote) {
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retVal += " (more on previous and next page)";
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}
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else if (addPreviousPageNote) {
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retVal += " (more on previous page)";
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}
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else if (addNextPageNote) {
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retVal += " (more on next page)";
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}
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return retVal + "\n";
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}
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/**
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* Method for returning a collection of gates the player is allowed to see.
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* Method for getting a collection of gates the player is allowed to see.
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*/
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protected Collection<Gate> getAllGates()
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{
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Collection<Gate> gates = Gate.getAll();
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if (this.sender instanceof Player && Plugin.permission != null)
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{
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if (this.sender instanceof Player && Plugin.permission != null) {
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Player p = (Player)this.sender;
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Collection<Gate> gatesCopy = new ArrayList<Gate>(gates); // create a copy since we cannot iterate over a collection while modifying it!
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// create a copy since we cannot iterate over a collection while modifying it!
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Collection<Gate> gatesCopy = new ArrayList<Gate>(gates);
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for (Gate gate : gatesCopy) {
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boolean permissionAtGateLocation = Plugin.permission.has(gate.getLocation().getWorld(), p.getName(), this.requiredPermission);
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if (!permissionAtGateLocation)
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{
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if (!permissionAtGateLocation) {
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gates.remove(gate);
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continue;
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}
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boolean permissionAtGateExit = Plugin.permission.has(gate.getExit().getWorld(), p.getName(), this.requiredPermission);
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if (gate.getExit() != null && !permissionAtGateExit)
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{
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gates.remove(gate);
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if (gate.getExit() != null) {
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boolean permissionAtGateExit = Plugin.permission.has(gate.getExit().getWorld(), p.getName(), this.requiredPermission);
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if (!permissionAtGateExit) {
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gates.remove(gate);
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}
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}
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}
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}
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@ -80,21 +169,23 @@ public class CommandList extends BaseCommand
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}
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/* sort all gates by there first character
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* put gates in corresponding Lists
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* all returned lists will be sorted alphabetically
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* list 0-25: a,b,c, ... ,z
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* list 26: 0-9
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* list 27: other
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/**
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* Sorts all gates by there first character.
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* Puts gates in corresponding Lists: (all returned lists will be sorted alphabetically)
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* list 0-25: a,b,c,..,z
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* list 26: 0-9
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* list 27: other
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*/
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protected List<List<String>> gatesSortedByName(Collection<Gate> allGates)
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protected static List<List<String>> gatesSortedByName(Collection<Gate> allGates)
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{
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// create the lists
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List<List<String>> ids = new ArrayList<List<String>>();
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for (int i=0; i<28; i++) {
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ids.add(new ArrayList<String>());
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}
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// put all gates into correct lists
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for (Gate gate : allGates) {
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String id = gate.getId();
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int first = id.charAt(0);
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@ -115,6 +206,7 @@ public class CommandList extends BaseCommand
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ids.get(first).add(id);
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}
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// sort everything
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for (int i=0; i<28; i++) {
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Collections.sort(ids.get(i));
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}
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@ -123,9 +215,13 @@ public class CommandList extends BaseCommand
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}
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// pages start at 1
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// will return null if requested page not availible
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protected List<String> message(int page)
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/**
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* Returns a list of strings.
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* Each string is the text for a page.
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* The maximum number of lines per page is 'linesPerPage' minus 1.
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* Will return an empty list if no gates are availible.
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*/
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protected List<String> pagedGateIds()
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{
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Collection<Gate> gates = this.getAllGates();
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@ -133,88 +229,80 @@ public class CommandList extends BaseCommand
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return null;
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}
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List<List<String>> ids = gatesSortedByName(gates);
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List<List<String>> gatesSortedByName = gatesSortedByName(gates);
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List<String> allPages = new ArrayList<String>();
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int linesLeftOnPage = linesPerPage - 1;
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String currentPageString = "";
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/* calculating which gates will be displayed on which page.
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* this is a little bit fuzzy. but hopefully it will look
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* great. (tell me if there is a better way!)
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*/
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int currentPage = 1;
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int currentStartingCharList = 0;
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boolean finishedCurrentIds = true;
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List<String> pageMessages = new ArrayList<String>();
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while (currentStartingCharList < ids.size()) {
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int linesLeftOnCurrentPage = 9;
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for (int i=0; i<gatesSortedByName.size(); i++) {
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while (linesLeftOnCurrentPage > 1 && currentStartingCharList < ids.size()) {
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List<String> currentIds = ids.get(currentStartingCharList);
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if (currentIds.size() > 0) {
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// add header line
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if (currentPage == page) {
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pageMessages.add(intToTitleString(currentStartingCharList));
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}
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// add ids
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int numLinesForCurrentChar = TextUtil.implode(currentIds, ", ").length() / 52 + 2;
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if (numLinesForCurrentChar <= linesLeftOnCurrentPage) { // all ids fit on current page
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linesLeftOnCurrentPage -= numLinesForCurrentChar;
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if (currentPage == page) {
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pageMessages.add(ChatColor.AQUA + TextUtil.implode(currentIds, ", "));
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if (finishedCurrentIds == false) {
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pageMessages.set(pageMessages.size() -2, pageMessages.get(pageMessages.size() -2) + " (more on previous page)");
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}
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}
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finishedCurrentIds = true;
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}
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else { // NOT all ids fit on current page
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int charsAvailible = (linesLeftOnCurrentPage - 1) * 52;
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int idsPos = 0;
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do {
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charsAvailible -= currentIds.get(idsPos).length() + 2;
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idsPos++;
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} while (charsAvailible > 0);
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List<String> idsToPutOnCurrentPage = currentIds.subList(0, idsPos);
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currentIds.remove(idsToPutOnCurrentPage);
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String stringToPutOnCurrentPage = TextUtil.implode(idsToPutOnCurrentPage, ", ");
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if (currentPage == page) {
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pageMessages.add(ChatColor.AQUA + stringToPutOnCurrentPage);
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pageMessages.set(pageMessages.size() -2, pageMessages.get(pageMessages.size() -2) + " (more on next page)");
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}
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linesLeftOnCurrentPage -= stringToPutOnCurrentPage.length() / 52 + 2;
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finishedCurrentIds = false;
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}
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}
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if (finishedCurrentIds) {
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currentStartingCharList++;
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}
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List<String> currentGates = gatesSortedByName.get(i);
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if(currentGates.isEmpty()) {
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continue;
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}
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currentPage++;
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List<String> currentGatesAsLines = linesOfGateIds(currentGates);
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boolean moreGatesOnLastPage = false;
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while (!currentGatesAsLines.isEmpty()) {
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if (linesLeftOnPage < 2) {
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currentPageString = currentPageString.substring(0, currentPageString.length()-2); // remove newlines add the end of the page
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allPages.add(currentPageString);
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currentPageString = "";
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linesLeftOnPage = linesPerPage - 1;
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}
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// calculate number of lines to add to current page
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int linesNecessaryForCurrentGates = currentGatesAsLines.size();
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int linesToFill;
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boolean moreGatesOnNextPage;
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if (linesNecessaryForCurrentGates < linesLeftOnPage) {
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linesToFill = linesNecessaryForCurrentGates;
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moreGatesOnNextPage = false;
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}
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else {
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linesToFill = linesLeftOnPage -1;
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moreGatesOnNextPage = true;
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}
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// add title
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currentPageString += intToTitleString(i, moreGatesOnLastPage, moreGatesOnNextPage);
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currentPageString += ChatColor.AQUA;
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linesLeftOnPage--;
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// add gate lines
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for (int j=0; j<linesToFill; j++) {
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currentPageString += currentGatesAsLines.get(j) + "\n";
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}
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// remove lines added
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for (int j=0; j<linesToFill; j++) {
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currentGatesAsLines.remove(0);
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}
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// cleanup
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if (linesNecessaryForCurrentGates < linesLeftOnPage) {
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moreGatesOnLastPage = false;
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}
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else {
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moreGatesOnLastPage = true;
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}
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linesLeftOnPage -= linesToFill;
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}
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}
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if (pageMessages.isEmpty()) {
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return null;
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}
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else {
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ArrayList<String> retVal = new ArrayList<String>();
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retVal.add(TextUtil.titleize("List of all gates (" + page + "/" + --currentPage + ")"));
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retVal.addAll(pageMessages);
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return retVal;
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// add the last page
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if (!currentPageString.isEmpty()) {
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currentPageString = currentPageString.substring(0, currentPageString.length()-2); // remove newlines add the end of the page
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allPages.add(currentPageString);
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}
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return allPages;
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}
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@ -234,21 +322,23 @@ public class CommandList extends BaseCommand
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public void perform()
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{
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int page = this.getPageParameter();
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List<String> messages = message(page);
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if (messages == null) {
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if (page == 1) { // no gates exist
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sendMessage(ChatColor.RED + "There are no gates yet. " + ChatColor.RESET +
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"(Note that you might not be allowed to get information about certain gates)");
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}
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else { // the requested page does not exist
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sendMessage(ChatColor.RED + "The requested page is not availible");
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}
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List<String> allPages = this.pagedGateIds();
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if (allPages == null) { // no gates exist
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sendMessage(ChatColor.RED + "There are no gates yet. " + ChatColor.RESET +
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"(Note that you might not be allowed to get information about certain gates)");
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return;
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}
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else {
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sendMessage(messages);
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if (page > allPages.size() || page < 1) {
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sendMessage(ChatColor.RED + "The requested page is not availible");
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return;
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}
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String message = TextUtil.titleize("List of all gates (" + page + "/" + allPages.size() + ")") + "\n";
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message += allPages.get(page-1);
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sendMessage(message);
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}
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}
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