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- /*
- * Copyright (c) 2006-2015 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.commandparser.commands;
-
- import com.dmdirc.commandparser.CommandArguments;
- import com.dmdirc.commandparser.commands.context.CommandContext;
- import com.dmdirc.events.CommandErrorEvent;
- import com.dmdirc.events.CommandOutputEvent;
- import com.dmdirc.interfaces.CommandController;
- import com.dmdirc.interfaces.WindowModel;
- import com.dmdirc.ui.messages.Styliser;
-
- import javax.annotation.Nonnull;
- import javax.annotation.Nullable;
-
- /**
- * Represents a generic command.
- */
- public abstract class Command {
-
- /** The controller this command is associated with. */
- private final CommandController controller;
-
- public Command(final CommandController controller) {
- this.controller = controller;
- }
-
- protected CommandController getController() {
- return controller;
- }
-
- /**
- * Sends an output line, if appropriate, to the specified target.
- *
- * @param target The command window to send the line to
- * @param isSilent Whether this command is being silenced or not
- * @param message The output to send
- */
- protected final void showOutput(@Nullable final WindowModel target,
- final boolean isSilent, final String message) {
- if (!isSilent && target != null) {
- target.getEventBus().publishAsync(new CommandOutputEvent(target, message));
- }
- }
-
- /**
- * Sends an error line, if appropriate, to the specified target.
- *
- * @param target The command window to send the line to
- * @param isSilent Whether this command is being silenced or not
- * @param message The error message to send
- */
- protected final void showError(@Nullable final WindowModel target,
- final boolean isSilent, final String message) {
- if (!isSilent && target != null) {
- target.getEventBus().publishAsync(new CommandErrorEvent(target, message));
- }
- }
-
- /**
- * Sends a usage line, if appropriate, to the specified target.
- *
- * @param target The command window to send the line to
- * @param isSilent Whether this command is being silenced or not
- * @param name The name of the command that's raising the error
- * @param args The arguments that the command accepts or expects
- */
- protected final void showUsage(@Nullable final WindowModel target,
- final boolean isSilent, final String name, final String args) {
- if (!isSilent && target != null) {
- target.getEventBus().publishAsync(new CommandErrorEvent(target,
- "Usage: " + controller.getCommandChar() + name + ' ' + args));
- }
- }
-
- /**
- * Formats the specified data into a table suitable for output in the textpane. It is expected
- * that each String[] in data has the same number of elements as the headers array.
- *
- * @param headers The headers of the table.
- * @param data The contents of the table.
- *
- * @return A string containing an ASCII table
- */
- protected static String doTable(final String[] headers, final String[][] data) {
- final StringBuilder res = new StringBuilder();
- res.append(Styliser.CODE_FIXED);
- res.append(Styliser.CODE_BOLD);
-
- final int[] maxsizes = new int[headers.length];
-
- for (int i = 0; i < headers.length; i++) {
- maxsizes[i] = headers[i].length() + 3;
-
- for (String[] row : data) {
- maxsizes[i] = Math.max(maxsizes[i], row[i].length() + 3);
- }
-
- doPadding(res, headers[i], maxsizes[i]);
- }
-
- for (String[] source : data) {
- res.append('\n');
- res.append(Styliser.CODE_FIXED);
-
- for (int i = 0; i < source.length; i++) {
- doPadding(res, source[i], maxsizes[i]);
- }
- }
-
- return res.toString();
- }
-
- /**
- * Adds the specified data to the stringbuilder, padding with spaces to the specified size.
- *
- * @param builder The stringbuilder to append data to
- * @param data The data to be added
- * @param size The minimum size that should be used
- */
- private static void doPadding(final StringBuilder builder, final String data,
- final int size) {
- builder.append(data);
-
- for (int i = 0; i < size - data.length(); i++) {
- builder.append(' ');
- }
- }
-
- /**
- * Executes this command.
- *
- * @param origin The container which received the command
- * @param args Arguments passed to this command
- * @param context The context the command was executed in
- *
- * @since 0.6.4
- */
- public abstract void execute(@Nonnull WindowModel origin, CommandArguments args,
- CommandContext context);
-
- }
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