/*
* Copyright 2015 JBoss, by Red Hat, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.uberfire.ext.widgets.common.client.ace;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.TakesValue;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HasText;
import com.google.gwt.user.client.ui.RequiresResize;
/**
* A GWT widget for the Ajax.org Code Editor (ACE).
* @see <a href="http://ace.ajax.org/">Ajax.org Code Editor</a>
*/
public class AceEditor extends Composite implements RequiresResize,
HasText,
TakesValue<String> {
// Used to generate unique element ids for Ace widgets.
private static int nextId = 0;
private final String elementId;
private JavaScriptObject editor;
private JsArray<AceAnnotation> annotations = JavaScriptObject.createArray().cast();
private Element divElement;
/**
* Preferred constructor.
*/
public AceEditor() {
elementId = "_aceGWT" + nextId;
nextId++;
FlowPanel div = new FlowPanel();
div.getElement().setId(elementId);
initWidget(div);
divElement = div.getElement();
getElement().setAttribute("data-uf-lock-on-click",
"false");
}
/**
* Do not use this constructor: just use the default constructor.
*/
@Deprecated
public AceEditor(boolean unused) {
this();
}
/**
* Removes all existing completers from the langtools<br/><br/>
* This can be used to disable all completers including local completers, which can be very useful
* when completers are used on very large files (as the local completer tokenizes every word to put in the selected list).<br/><br/>
* <strong>NOTE:</strong> This method may be removed, and replaced with another solution. It works at point of check-in, but treat this as unstable for now.
*/
public native static void removeAllExistingCompleters() /*-{
var langTools = $wnd.ace.require("ace/ext/language_tools");
langTools.removeCompleters();
}-*/;
/**
* Add an {@link AceCompletionProvider} to provide
* custom code completions.
* <p>
* <strong>Warning</strong>: this is an experimental feature of AceGWT.
* It is possible that the API will change in an incompatible way
* in future releases.
* @param provider the {@link AceCompletionProvider}
*/
public native static void addCompletionProvider(AceCompletionProvider provider) /*-{
var langTools = $wnd.ace.require("ace/ext/language_tools");
var completer = {
getCompletions: function (editor, session, pos, prefix, callback) {
var callbackWrapper =
@org.uberfire.ext.widgets.common.client.ace.AceEditor::wrapCompletionCallback(Lcom/google/gwt/core/client/JavaScriptObject;)(callback);
var aceEditor = editor._aceGWTAceEditor;
provider.@org.uberfire.ext.widgets.common.client.ace.AceCompletionProvider::getProposals(Lorg/uberfire/ext/widgets/common/client/ace/AceEditor;Lorg/uberfire/ext/widgets/common/client/ace/AceEditorCursorPosition;Ljava/lang/String;Lorg/uberfire/ext/widgets/common/client/ace/AceCompletionCallback;)(
aceEditor,
@org.uberfire.ext.widgets.common.client.ace.AceEditorCursorPosition::create(II)(pos.row, pos.column),
prefix,
callbackWrapper
);
}
};
langTools.addCompleter(completer);
}-*/;
private static AceCompletionCallback wrapCompletionCallback(JavaScriptObject jsCallback) {
return new AceCompletionCallbackImpl(jsCallback);
}
/**
* Call this method to start the editor.
* Make sure that the widget has been attached to the DOM tree
* before calling this method.
*/
public native void startEditor() /*-{
var editor = $wnd.ace.edit(this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::divElement);
editor.getSession().setUseWorker(false);
this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor = editor;
// Store a reference to the (Java) AceEditor object in the
// JavaScript editor object.
editor._aceGWTAceEditor = this;
// I have been noticing sporadic failures of the editor
// to display properly and receive key/mouse events.
// Try to force the editor to resize and display itself fully. See:
// https://groups.google.com/group/ace-discuss/browse_thread/thread/237262b521dcea33
editor.resize();
this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::redisplay();
}-*/;
/**
* Call this to force the editor contents to be redisplayed.
* There seems to be a problem when an AceEditor is embedded in a LayoutPanel:
* the editor contents don't appear, and it refuses to accept focus
* and mouse events, until the browser window is resized.
* Calling this method works around the problem by forcing
* the underlying editor to redisplay itself fully. (?)
*/
public native void redisplay() /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.renderer.onResize(true);
editor.renderer.updateFull();
editor.resize();
editor.focus();
}-*/;
/**
* Cleans up the entire editor.
*/
public native void destroy() /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.destroy();
}-*/;
/**
* Set the theme.
* @param theme the theme (one of the values in the {@link AceEditorTheme}
* enumeration)
*/
public void setTheme(final AceEditorTheme theme) {
setThemeByName(theme.getName());
}
/**
* Set the theme by name.
* @param themeName the theme name (e.g., "twilight")
*/
public native void setThemeByName(String themeName) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.setTheme("ace/theme/" + themeName);
}-*/;
/**
* Set the mode.
* @param mode the mode (one of the values in the
* {@link AceEditorMode} enumeration)
*/
public void setMode(final AceEditorMode mode) {
setModeByName(mode.getName());
}
/**
* Set the mode by name.
* @param shortModeName name of mode (e.g., "eclipse")
*/
public native void setModeByName(String shortModeName) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
var modeName = "ace/mode/" + shortModeName;
var TheMode = $wnd.require(modeName).Mode;
editor.getSession().setMode(new TheMode());
}-*/;
/**
* Register a handler for change events generated by the editor.
* @param callback the change event handler
*/
public native void addOnChangeHandler(AceEditorCallback callback) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.getSession().on("change", function (e) {
callback.@org.uberfire.ext.widgets.common.client.ace.AceEditorCallback::invokeAceCallback(Lcom/google/gwt/core/client/JavaScriptObject;)(e);
});
}-*/;
/**
* Register a handler for cursor position change events generated by the editor.
* @param callback the cursor position change event handler
*/
public native void addOnCursorPositionChangeHandler(AceEditorCallback callback) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.getSession().selection.on("changeCursor", function (e) {
callback.@org.uberfire.ext.widgets.common.client.ace.AceEditorCallback::invokeAceCallback(Lcom/google/gwt/core/client/JavaScriptObject;)(e);
});
}-*/;
/**
* Set font size.
*/
public native void setFontSize(String fontSize) /*-{
var elementId = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::elementId;
var elt = $doc.getElementById(elementId);
elt.style.fontSize = fontSize;
}-*/;
/**
* Get the complete text in the editor as a String.
* @return the text in the editor
*/
public native String getText() /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
return editor.getSession().getValue();
}-*/;
/**
* Set the complete text in the editor from a String.
* @param text the text to set in the editor
*/
public native void setText(String text) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.getSession().setValue(text);
}-*/;
/**
* Get the line of text at the given row number.
* @param row the row number
* @return the line of text at that row number
*/
public native String getLine(int row) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
return editor.getSession().getDocument().getLine(row);
}-*/;
/**
* Insert given text at the cursor.
* @param text text to insert at the cursor
*/
public native void insertAtCursor(String text) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.insert(text);
}-*/;
/**
* Get the current cursor position.
* @return the current cursor position
*/
public native AceEditorCursorPosition getCursorPosition() /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
var pos = editor.getCursorPosition();
return this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::getCursorPositionImpl(DD)(pos.row, pos.column);
}-*/;
private AceEditorCursorPosition getCursorPositionImpl(final double row,
final double column) {
return new AceEditorCursorPosition((int) row,
(int) column);
}
/**
* Gets the given document position as a zero-based index.
* @param position the position to obtain the absolute index of (base zero)
* @return An index to the current location in the document
*/
public int getIndexFromPosition(AceEditorCursorPosition position) {
return getIndexFromPositionImpl(position.toJsObject());
}
private native int getIndexFromPositionImpl(JavaScriptObject jsPosition) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
return editor.getSession().getDocument().positionToIndex(jsPosition);
}-*/;
/**
* Gets a document position from a supplied zero-based index.
* @param index (base zero)
* @return A position object showing the row and column of the supplied index in the document
*/
public native AceEditorCursorPosition getPositionFromIndex(int index) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
var jsPosition = editor.getSession().getDocument().indexToPosition(index);
return @org.uberfire.ext.widgets.common.client.ace.AceEditorCursorPosition::create(II)(
jsPosition.row,
jsPosition.column
);
}-*/;
/**
* Set whether or not soft tabs should be used.
* @param useSoftTabs true if soft tabs should be used, false otherwise
*/
public native void setUseSoftTabs(boolean useSoftTabs) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.getSession().setUseSoftTabs(useSoftTabs);
}-*/;
/**
* Set tab size. (Default is 4.)
* @param tabSize the tab size to set
*/
public native void setTabSize(int tabSize) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.getSession().setTabSize(tabSize);
}-*/;
/**
* Go to given line.
* @param line the line to go to
*/
public native void gotoLine(int line) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.gotoLine(line);
}-*/;
/**
* Go to given line.
* @param line the line to go to
*/
public native void scrollToLine(int line) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.resize(true);
editor.scrollToLine(line, true, true, function () {
});
}-*/;
/**
* Set whether or not the horizontal scrollbar is always visible.
* @param hScrollBarAlwaysVisible true if the horizontal scrollbar is always
* visible, false if it is hidden when not needed
*/
public native void setHScrollBarAlwaysVisible(boolean hScrollBarAlwaysVisible) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.renderer.setHScrollBarAlwaysVisible(hScrollBarAlwaysVisible);
}-*/;
/**
* Set whether or not the gutter is shown.
* @param showGutter true if the gutter should be shown, false if it should be hidden
*/
public native void setShowGutter(boolean showGutter) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.renderer.setShowGutter(showGutter);
}-*/;
/**
* Set or unset read-only mode.
* @param readOnly true if editor should be set to readonly, false if the
* editor should be set to read-write
*/
public native void setReadOnly(boolean readOnly) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.setReadOnly(readOnly);
}-*/;
/**
* Set or unset highlighting of currently selected word.
* @param highlightSelectedWord true to highlight currently selected word, false otherwise
*/
public native void setHighlightSelectedWord(boolean highlightSelectedWord) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.setHighlightSelectedWord(highlightSelectedWord);
}-*/;
/**
* Set or unset the visibility of the print margin.
* @param showPrintMargin true if the print margin should be shown, false otherwise
*/
public native void setShowPrintMargin(boolean showPrintMargin) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.renderer.setShowPrintMargin(showPrintMargin);
}-*/;
/**
* Add an annotation to a the local <code>annotations</code> JsArray<AceAnnotation>, but does not set it on the editor
* @param row to which the annotation should be added
* @param column to which the annotation applies
* @param text to display as a tooltip with the annotation
* @param type to be displayed (one of the values in the
* {@link AceAnnotationType} enumeration)
*/
public void addAnnotation(final int row,
final int column,
final String text,
final AceAnnotationType type) {
annotations.push(AceAnnotation.create(row,
column,
text,
type.getName()));
}
/**
* Set any annotations which have been added via <code>addAnnotation</code> on the editor
*/
public native void setAnnotations() /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
var annotations = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::annotations;
editor.getSession().setAnnotations(annotations);
}-*/;
/**
* Clear any annotations from the editor and reset the local <code>annotations</code> JsArray<AceAnnotation>
*/
public native void clearAnnotations() /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.getSession().clearAnnotations();
this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::resetAnnotations()();
}-*/;
/**
* Reset any annotations in the local <code>annotations</code> JsArray<AceAnnotation>
*/
private void resetAnnotations() {
annotations = JavaScriptObject.createArray().cast();
}
/**
* Remove a command from the editor.
* @param command the command (one of the values in the
* {@link AceCommand} enumeration)
*/
public void removeCommand(final AceCommand command) {
removeCommandByName(command.getName());
}
/**
* Remove commands, that may not be required, from the editor
* @param command to be removed, one of
* "gotoline", "findnext", "findprevious", "find", "replace", "replaceall"
*/
public native void removeCommandByName(String command) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.commands.removeCommand(command);
}-*/;
/**
* Set whether to use wrap mode or not
* @param useWrapMode true if word wrap should be used, false otherwise
*/
public native void setUseWrapMode(boolean useWrapMode) /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.getSession().setUseWrapMode(useWrapMode);
}-*/;
/* (non-Javadoc)
* @see com.google.gwt.user.client.ui.ResizeComposite#onResize()
*/
@Override
public void onResize() {
redisplay();
}
@Override
public String getValue() {
return this.getText();
}
@Override
public void setValue(String value) {
this.setText(value);
}
/**
* Set whether or not autocomplete is enabled.
* @param b true if autocomplete should be enabled, false if not
*/
public native void setAutocompleteEnabled(boolean b) /*-{
// See: https://github.com/ajaxorg/ace/wiki/How-to-enable-Autocomplete-in-the-Ace-editor
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
if (b) {
$wnd.ace.require("ace/ext/language_tools");
editor.setOptions({enableBasicAutocompletion: true});
} else {
editor.setOptions({enableBasicAutocompletion: false});
}
}-*/;
public native void setFocus() /*-{
var editor = this.@org.uberfire.ext.widgets.common.client.ace.AceEditor::editor;
editor.focus();
}-*/;
}