diff options
Diffstat (limited to 'webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/log/DivAppender.js')
-rw-r--r-- | webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/log/DivAppender.js | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/log/DivAppender.js b/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/log/DivAppender.js new file mode 100644 index 0000000000..506cae32a1 --- /dev/null +++ b/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/log/DivAppender.js @@ -0,0 +1,166 @@ +/* ************************************************************************ + + qooxdoo - the new era of web development + + http://qooxdoo.org + + Copyright: + 2006 STZ-IDA, Germany, http://www.stz-ida.de + + License: + LGPL: http://www.gnu.org/licenses/lgpl.html + EPL: http://www.eclipse.org/org/documents/epl-v10.php + See the LICENSE file in the project's top-level directory for details. + + Authors: + * Til Schneider (til132) + +************************************************************************ */ + +/* ************************************************************************ + +#module(log) + +************************************************************************ */ + +/** + * An appender that writes all messages to a div element. + * + * This class does not depend on qooxdoo widgets, so it also works when there + * are problems with widgets or when the widgets are not yet initialized. + * + * @param divId {String ? "qx_log"} the ID of the div element to write the + * messages to. + */ +qx.OO.defineClass("qx.log.DivAppender", qx.log.Appender, +function(divId) { + qx.log.Appender.call(this); + + this._divId = divId ? divId : "qx_log"; +}); + + +/** + * The maximum number of messages to show. If null the number of messages is not + * limited. + */ +qx.OO.addProperty({ name:"maxMessages", type:"number", defaultValue:500 }); + +// overridden +qx.OO.changeProperty({ name:"useLongFormat", type:"boolean", defaultValue:false, allowNull:false }); + +/** The CSS class name for the head div {containing the clear button}. */ +qx.OO.addProperty({ name:"headClassName", type:"string", defaultValue:"log-head" }); + +/** The CSS class name for the body div {containing the log messages}. */ +qx.OO.addProperty({ name:"bodyClassName", type:"string", defaultValue:"log-body" }); + +/** The CSS class name for a div showing the name of the current group. */ +qx.OO.addProperty({ name:"groupClassName", type:"string", defaultValue:"log-group" }); + +/** The CSS class name for a div showing a debug message. */ +qx.OO.addProperty({ name:"debugClassName", type:"string", defaultValue:"log-debug" }); + +/** The CSS class name for a div showing a info message. */ +qx.OO.addProperty({ name:"infoClassName", type:"string", defaultValue:"log-info" }); + +/** The CSS class name for a div showing a warn message. */ +qx.OO.addProperty({ name:"warnClassName", type:"string", defaultValue:"log-warn" }); + +/** The CSS class name for a div showing a error message. */ +qx.OO.addProperty({ name:"errorClassName", type:"string", defaultValue:"log-error" }); + + +/** + * Creates an onclick handler that clears a div element. This method is used to + * create a minimum closure. + * + * @param logElem {Element} the element to clear when the handler is called. + * @return {Function} the handler. + */ +qx.Proto._createClearButtonHandler = function(logElem) { + return function(evt) { + logElem.innerHTML = ""; + } +} + + +// overridden +qx.Proto.appendLogEvent = function(evt) { + var Logger = qx.log.Logger; + + // Initialize the log element if nessesary + if (this._logElem == null) { + var divElem = document.getElementById(this._divId); + if (divElem == null) { + throw new Error("Logging div with ID " + this._divId + " not found"); + } + divElem.innerHTML = '<div class="' + this.getHeadClassName() + '"><button>Clear</button></div>' + + '<div class="' + this.getBodyClassName() + '"></div>'; + + this._clearBt = divElem.firstChild.firstChild; + this._logElem = divElem.lastChild; + + this._clearBt.onclick = this._createClearButtonHandler(this._logElem); + } + + // Append the group when needed + var group = evt.logger.getName(); + if (evt.instanceId != null) { + group += "[" + evt.instanceId + "]"; + } + + if (group != this._lastGroup) { + var elem = document.createElement("div"); + elem.className = this.getGroupClassName(); + elem.innerHTML = group; + + this._logElem.appendChild(elem); + this._lastGroup = group; + } + + // Append the message + var elem = document.createElement("div"); + switch (evt.level) { + case Logger.LEVEL_DEBUG: elem.className = this.getDebugClassName(); break; + case Logger.LEVEL_INFO: elem.className = this.getInfoClassName(); break; + case Logger.LEVEL_WARN: elem.className = this.getWarnClassName(); break; + case Logger.LEVEL_ERROR: elem.className = this.getErrorClassName(); break; + } + elem.innerHTML = this.formatLogEvent(evt).replace(/&/g, "&") + .replace(/</g, "<").replace(/ /g, "  ").replace(/[\n]/g, "<br>"); + this._logElem.appendChild(elem); + + // Remove superflous messages + while (this._logElem.childNodes.length > this.getMaxMessages()) { + this._logElem.removeChild(this._logElem.firstChild); + + if (this._removedMessageCount == null) { + this._removedMessageCount = 1; + } else { + this._removedMessageCount++; + } + } + + if (this._removedMessageCount != null) { + this._logElem.firstChild.className = ""; + this._logElem.firstChild.innerHTML = "(" + this._removedMessageCount + + " messages removed)"; + } +} + + +// overridden +qx.Proto.dispose = function() { + if (this.getDisposed()) { + return true; + } + + if (this._clearBt) { + this._clearBt.onclick = null; + this._clearBt = null; + } + this._logElem = null; + + return qx.log.Appender.prototype.dispose.call(this); +} |