What is the substitute way for "package com.google.gwt.event.dom.client" as it does not exist for 1.5.3 in 2.0.3

[Mithun]

What is the substitute way for "package
com.google.gwt.event.dom.client" as it does not exist for 1.5.3? I am
migrating codes from GWT 2.0.3 to 1.5.3, so above package is not there
in 1.5.3. So It would be very helpful if someone can tell me how
should I proceed for down-gradation.

Found in GWT Release (e.g. 2.4.0, 2.5.0 RC):
1.5.3

Encountered on OS / Browser (e.g. WinXP, IE8-9, FF7):
Windows XP

Detailed description (please be as specific as possible):
We are doing code migration from one project which has GWT version
1.5.3 to another project which has GWT version 2.0.3. So at the time
of migrating GWT codes, I am getting an error that

"package com.google.gwt.event.dom.client does not exist" in GWT 1.5.3.
So couple of methods (ex.
HasClickHandlers,DistDataTextBox,ClickHandler,removeAllRows,ValueChangeHandler,KeyPressHandler,
clearCurves,getYAxis,setChartTitle,update)that used in 2.0.3 is not
able to compile in 1.5.3. Please let me know how should proceed on
this.

Shortest code snippet which demonstrates issue (please indicate where
actual result differs from expected result):

Here I am putting error report rather code snippet:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-
plugin:2.0.2:compile (default-compile) on project planningmaint-web:
Compilation failure: Compilation failure:
J:\workspace\PlanningMaintenance_Project\main\modules\planningmaint-web
\src\main\java\com\ccna\supplychain\planningmaint\client
\DistDataGrid.java:[14,38] package com.google.gwt.event.dom.client
does not exist

J:\workspace\PlanningMaintenance_Project\main\modules\planningmaint-web
\src\main\java\com\ccna\supplychain\planningmaint\client
\DistDataGChart.java:[11,7] cannot access
com.google.gwt.event.dom.client.HasClickHandlers
class file for com.google.gwt.event.dom.client.HasClickHandlers not
found
public class DistDataGChart extends GChart {

J:\workspace\PlanningMaintenance_Project\main\modules\planningmaint-web
\src\main\java\com\ccna\supplychain\planningmaint\client
\DistDataGrid.java:[415,9] cannot find symbol
symbol  : class DistDataTextBox
location: class
com.ccna.supplychain.planningmaint.client.demandprofile.DistDataGrid